Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

Im out of ideas !

Thread Tools
 
Search this Thread
 
Old Jan 7, 2013 | 09:47 PM
  #101  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
How do you go about posting pics? Id love to post some pics of how we found it after sitting for 12 years and what it looked lie after we sprayed 12 years of dust off it.
Im not 100% on that. i think its through photobucket and typing the location of the pic in this box but dont quote me on that!
Reply
Old Jan 7, 2013 | 09:48 PM
  #102  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

I bet that thing was a little dirty.
Reply
Old Jan 7, 2013 | 10:03 PM
  #103  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

http://i1273.photobucket.com/albums/...psf1bc5088.png?
Reply
Old Jan 7, 2013 | 10:04 PM
  #104  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

http://i1273.photobucket.com/albums/...g?t=1357617627
Reply
Old Jan 7, 2013 | 10:05 PM
  #105  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

I dont think I did that right hahahaha
Reply
Old Jan 7, 2013 | 10:08 PM
  #106  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Wow. good before and after pics. It was filthy! Wasnt it a pain to get running after that long?
Reply
Old Jan 7, 2013 | 10:09 PM
  #107  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

bth_TransAmdusty_zpsf1bc5088.png?t=1357617697
Reply
Old Jan 7, 2013 | 10:10 PM
  #108  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

bth_TransAm_zps19597bdc.png?t=1357617627
Reply
Old Jan 7, 2013 | 10:11 PM
  #109  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Ok that worked. Now everybody can see why im trying so hard, this thing has never had a wire cut or anything removed and all the original sales receipts.
Reply
Old Jan 7, 2013 | 10:13 PM
  #110  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

actually not at first, new fuel pump and tires and all the fluids at first. dint even smoke when it started.
Reply
Old Jan 7, 2013 | 10:13 PM
  #111  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Thats the worst part when you have to go messing with everything when something goes wrong and its never been touched!
Reply
Old Jan 7, 2013 | 10:15 PM
  #112  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Id post a pic of mine but i havent got a clue
Reply
Old Jan 7, 2013 | 10:16 PM
  #113  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
actually not at first, new fuel pump and tires and all the fluids at first. dint even smoke when it started.
Funny thing is i see your location says kentucky and thats where im at. I hope this problem isnt just a kentucky thing! LOL
Reply
Old Jan 7, 2013 | 10:17 PM
  #114  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

The second pic was when i got it home, about an hour after i took the first pic. Its never even seen rain before now.
Reply
Old Jan 7, 2013 | 10:18 PM
  #115  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

What Part Ky?
Reply
Old Jan 7, 2013 | 10:19 PM
  #116  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
What Part Ky?
Western, by indiana
Reply
Old Jan 7, 2013 | 10:22 PM
  #117  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Im Eastern, lived in Henderson awhile though for work.
Reply
Old Jan 7, 2013 | 10:22 PM
  #118  
BumpaD82's Avatar
Member
20 Year Member
 
Joined: Apr 2001
Posts: 482
Likes: 3
From: UTAH
Car: 1982 Z28 & 1967 RS & 2002 Z28
Engine: 388 ci SB / 454 ci BB / LS1
Transmission: 4 speed / TH350 / T56
Axle/Gears: '91 "1LE" rear, posi w/ 3.23's
Re: Im out of ideas !

It doesn't like being in a Ford household ?

I hope you can get it sorted out soon, you are more patient than I am ! A manifold, distributor and carburetor would have found its way onto it, if it was causing me problems like that !

P.s. I'm sure it's something simple !
Reply
Old Jan 7, 2013 | 10:23 PM
  #119  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
Im Eastern, lived in Henderson awhile though for work.
cool. might have seen you somewhere and never knew it.haha
Reply
Old Jan 7, 2013 | 10:24 PM
  #120  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by BumpaD82
It doesn't like being in a Ford household ?

I hope you can get it sorted out soon, you are more patient than I am ! A manifold, distributor and carburetor would have found its way onto it, if it was causing me problems like that !

P.s. I'm sure it's something simple !
always is..............
Reply
Old Jan 7, 2013 | 10:29 PM
  #121  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Im getting overcome with GM's lately, his Trans Am and her Vette and my Mustang and F150. Oh and my D@mn camper even has a 400 small block hahahaha
Reply
Old Jan 7, 2013 | 10:31 PM
  #122  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

i wouldnt have it any other way
Reply
Old Jan 7, 2013 | 10:34 PM
  #123  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Ok guys ill update when i get that knock sensor changed, off to bed. After 8 hours of working on that thing non stop im a little tired.
Reply
Old Jan 8, 2013 | 12:32 AM
  #124  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !

I would try that knock sensor
get a good brand, there are diff between part #s. It work off hz frequency. Learned thi while tuning my holley hp. Here is a little link to burn your mind on knock hz.

http://forums.holley.com/showthread....-knock-sensors

Interesting stuff

Last edited by IROCZ1989; Jan 8, 2013 at 01:22 AM.
Reply
Old Jan 8, 2013 | 01:14 AM
  #125  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !

Here is another good link for your condition:

http://www.corvettebuyers.com/c4vettes/l98.htm
Reply
Old Jan 8, 2013 | 01:21 AM
  #126  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !

Here is an explaination of code 42:

Check wiring at ignition module. Replace ignition module. Possible ECM failure
Reply
Old Jan 8, 2013 | 07:17 AM
  #127  
C409's Avatar
Junior Member
15 Year Member
iTrader: (5)
 
Joined: Jan 2009
Posts: 70
Likes: 4
From: Clearwater , Florida
Car: '87 Vette C4
Engine: 400 + .040 = 409 ci
Transmission: 700R4 built
Axle/Gears: Dana 44 w/3.42's
Re: Im out of ideas !

......... The scan shows spark advance at 0 ... no spark advance will cause it to run rich ... will also cause the Idle air control to open wide ( 144 ) ... and will keep the ECM from allowing closed loop ... I strongly suggest you check / change the Ignition control module , make sure you put the dielectric grease under it ... and the Electronic spark control module .....
Reply
Old Jan 8, 2013 | 09:21 AM
  #128  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Ive replaced the module twice and tested the old when i returned it, it checked out good but replaced it anyway. Im a descent mechanic but this thing has me stumped, I did order a new radio resister so i could replace the wires inside the distibutor. It acts like something electrical breaking down but when i unplugged the EST wire last night it started right up!
Reply
Old Jan 8, 2013 | 09:34 AM
  #129  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Im aso gonna add when i got the top end back together (new injectors) and timed it at 6 degrees with the EST unplugged it ran hot around 220 or better and idled around 500 rpm's. I was thinking about bumping up the timing just a liitle today but dont think that'll help the thing from quitting after a couple miles.
Reply
Old Jan 8, 2013 | 11:56 AM
  #130  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !

You test the coil?
Reply
Old Jan 8, 2013 | 11:59 AM
  #131  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by IROCZ1989
You test the coil?
Coils don't fail like that. They either work or they don't.
Reply
Old Jan 8, 2013 | 12:02 PM
  #132  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
Ive replaced the module twice and tested the old when i returned it, it checked out good but replaced it anyway. Im a descent mechanic but this thing has me stumped, I did order a new radio resister so i could replace the wires inside the distibutor. It acts like something electrical breaking down but when i unplugged the EST wire last night it started right up!
Because you disabled the timing . It doesn't start because the computer is retarding the timing so much that it will not start. It is sensing detonation or spark knock for whatever reason bad enough that it pulls the timing completely out of it causing it to stall.
Reply
Old Jan 8, 2013 | 01:09 PM
  #133  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !

Coils sometimes when hot short out. Ive been through this with msd replacement coils on these cars. They short out after running x amount of time. Seen it. Doesnt take long to test the ohms across three points before and after it stalls. If it isnt the distributor or the module, last on the list is ecm. What is your engine code? Ill check my helm and post the page here for reference.
Reply
Old Jan 8, 2013 | 01:55 PM
  #134  
IROCZ1989's Avatar
Supreme Member
iTrader: (1)
 
Joined: Dec 2002
Posts: 1,391
Likes: 66
From: MA
Car: 1989 IrocZ
Engine: 421 Dart Stroker
Transmission: 4L60E Cahall Performance Built
Axle/Gears: Midwest Chassis Fab 9/ 3.55 gears
Re: Im out of ideas !





Reply
Old Jan 8, 2013 | 01:56 PM
  #135  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by IROCZ1989
Coils sometimes when hot short out. Ive been through this with msd replacement coils on these cars. They short out after running x amount of time. Seen it. Doesnt take long to test the ohms across three points before and after it stalls. If it isnt the distributor or the module, last on the list is ecm. What is your engine code? Ill check my helm and post the page here for reference.
they may break down and not work to full potential. but as far as it working, stop working, and work again is not the way a coil operates.
Reply
Old Jan 8, 2013 | 02:05 PM
  #136  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

The power that the 12 volt battery used in the car it tends to produce is insufficient to trigger the spark necessary to facilitate explosion, and this is where the 'ignition coil' comes into the picture. It converts the battery's 12 volt power into 40 kV power required to create the spark. In other words, it is an induction coil which converts the relatively weak power from the battery to enormous power amounting to 40 kV that is required to produce the spark which ignites the air fuel mixture in the ignition system. The current from the battery begins building up when the contact breaker closes, and continues until it reaches its maximum capacity. Once it reaches its full capacity, the contact breaker opens and the high voltage spark is produced. If the ignition coil is not there, the 12v DC battery on board the vehicle is of no use as such little amount of power is not sufficient for creating the spark that's required to produce the explosion of the fuel-air mixture in the engine. While some of these coils resort to resistor to reduce the voltage, others rely on a resistor wire or an external resistor to facilitate the same.

Basically, the ignition coil is made up of two coils of wire - placed one on the top of the other. These coils are also referred to as windings - with the first coil being referred to as 'primary coil', while the second coil - which is wrapped around the primary coil, being referred to as 'secondary coil'. As far as the number of 'turns' in either of these are concerned, the number of turns in secondary coil is in multiples of the number of turns in its primary counterpart. The current flows from the battery through the primary coil wherein it is collected together to produce the required spark - which is eventually sent to the distributor by the secondary coil. In order to make sure that the tremendous amount of heat generated in this process doesn't harm the coil, it is filled with oil acts as a coolant for the device. While some engine models are equipped with a single ignition coil, others have one each for every spark plug. In case of models with single spark plug, a distributor is used to distribute the spark to the appropriate spark plug.

You also need to be well-versed with ignition coil problems that can turn out to be utter nuisance at times. Of the various ignition problems that you are likely to face, weak spark and coil not firing are the ones which are attributed to the ignition coil. In his case when the car dies id bet if you pull the coil wire and crank it its still firing.
Reply
Old Jan 8, 2013 | 03:07 PM
  #137  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

I replaced the coil once but it wont take that long to replace it again, I just went out and checked something though. I put the timing light back on it and still at 6 degrees with EST wire unhooked it advances when i rev it up. When I connect the EST wire and rev it it does the same thing. Am i right in saying the control module will advance the timing by 10 degrees or something like that?
Reply
Old Jan 8, 2013 | 03:08 PM
  #138  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

One more question, will the coil heating up and breaking down cause the code EST problem?
Reply
Old Jan 8, 2013 | 03:22 PM
  #139  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

bth_50TPI_zps37e148b5.jpg?t=1357679848
Reply
Old Jan 8, 2013 | 03:35 PM
  #140  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

Originally Posted by Gumby40
One more question, will the coil heating up and breaking down cause the code EST problem?
No. the problem your having isnt caused by the coil. Did you do the knock sensor yet?
Reply
Old Jan 8, 2013 | 03:51 PM
  #141  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

No I havent picked up a new knock sensor yet, honestly dont feel like worikng on it today hahahaha
Reply
Old Jan 8, 2013 | 04:24 PM
  #142  
Street Lethal's Avatar
Supreme Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Jul 2003
Posts: 10,521
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: Im out of ideas !

Originally Posted by tzim350HO
yes but the knock sensor is what tells the computer to adjust the timing. when theres a problem with timing you will get the 42 code.
Bingo. Change your knock sensor.
Reply
Old Jan 11, 2013 | 03:26 PM
  #143  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Alright I changed the knock sensor and reset the computer, drove it around the block a couple times and after a mile or two the check engine light would come on just for a second and the engine would stumble. When the light would go out the engine would straighten right up. Pulled the codes and the dreaded 42 is back, called Napa and they have one so return the other to Advance and try that. Like always any help is appreciated
Reply
Old Jan 11, 2013 | 03:28 PM
  #144  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Control Module i meant to put in there
Reply
Old Jan 11, 2013 | 03:37 PM
  #145  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

It sounds like it keeps detecting spark knock or detonation! It stumbles because the computer thinks it needs to pull all of the timing out for whatever reason. It runs fine when it turns off because the timing goes back to normal.
Reply
Old Jan 11, 2013 | 03:48 PM
  #146  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

So would you suggest a module and coil change?
Reply
Old Jan 11, 2013 | 03:49 PM
  #147  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

That shouldn't have anything to do with an issue like that. Have you checked the timing by chance. I couldn't remember if you did.
Reply
Old Jan 11, 2013 | 03:55 PM
  #148  
Gumby40's Avatar
Thread Starter
Junior Member
 
Joined: Dec 2012
Posts: 78
Likes: 0
From: Kentucky
Car: 1986 Trans Am
Engine: 305 TPI
Transmission: A/T
Axle/Gears: No Clue
Re: Im out of ideas !

Yea I checked it with the EST wire still hooked up, it was at 6 degrees. Should it be at something else with the wire hooked up. I know I initially timed it at 6 degrees with the wire unhooked.
Reply
Old Jan 11, 2013 | 03:56 PM
  #149  
Street Lethal's Avatar
Supreme Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (16)
 
Joined: Jul 2003
Posts: 10,521
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: Im out of ideas !

Let me just clarify something...

Originally Posted by Gumby40
OK here goes the parts list ive changed 2 AC Delco fuel pumps, Module, Pick-up-coil, coil, new mass air flow sensor and burn off relay, fuel pump relay, ECM, ECT sensor, new injector O rings, new upper plenum gaskets, injectors tested 17-18 OHM's, 42 psi at the rail, fuel regulator line is dry...
When you said module, were you referring to your ICM, or the EST module...?

http://www.napaonline.com/Catalog/Ca...216_0168412117
Reply
Old Jan 11, 2013 | 03:58 PM
  #150  
tzim350HO's Avatar
Member
 
Joined: Jun 2011
Posts: 198
Likes: 0
Car: 1991 Trans Am GTA
Engine: 350 carbed
Transmission: T5
Axle/Gears: 7.5 10 bolt 4.10
Re: Im out of ideas !

That sounds fine. But the computer is sensing it somehow. The only way it does is through the knock sensor. I wish you weren't 500 miles away we could swap a computer and make sure that didn't fail.
Reply



All times are GMT -5. The time now is 03:06 AM.