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

My L89 keeps cutting out... HHEEELLPPPP

Thread Tools
 
Search this Thread
 
Old Oct 25, 2012 | 06:18 PM
  #1  
ATCFLYBOY02's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Sep 2011
Posts: 316
Likes: 0
From: Birmingham, Alabama!!!
Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
My L89 keeps cutting out... HHEEELLPPPP

Ok here's the back story:
I had a problem with the car 2 weeks ago cutting out. It started one day after I put it in drive. It cut completely off & after a few times turning the key, it stuttered like it wasn't getting enough fuel. After I let the car sit for about 2 hours, it started right up & had no problems for a few days.

2 or 3 days later, I started off on a 100 mile trip & made it to my destination without incident. I started the car after an hour or so & drove to Autozone, came back out, hit the key & the car sputtered for a few rounds, then cut off. Shot to starter fluid in the TB, it ran long enough for the go juice to burn off & refused to start again. Diagnosed a bad fuel pump & replaced. Made my trip back home (about 100 miles) with no problems.

Yesterday, I was in route to class & about 1/2 mile from UAB, the car started to cut out again except I keep it putting until I get to the parking lot. Again, I let it sit for an hour or 2, come out & it runs fine.

Today, I leave the guitar shop, headed to the gun range, and I put the car in drive & it starts cutting out again. I played with the throttle to keep it somewhat running & every few seconds it would act "fine" and then go back to cutting out again. It did this for about 2 min while I was dodging Birmingham traffic during rush hour.

When I hit the throttle when its acting up, it acts like no fuel getting to the engine. It will idle but it's VERY rough, again, acting like no fuel is getting to the engine.

I'm not exactly sure WTF is going on but start shooting ideas my way please. It has to be something that is not making a good connection or something of that nature... PLEASE HELP ME lol
Reply
Old Oct 25, 2012 | 06:23 PM
  #2  
ATCFLYBOY02's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Sep 2011
Posts: 316
Likes: 0
From: Birmingham, Alabama!!!
Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: My L89 keeps cutting out... HHEEELLPPPP

PS: my OBD will not connect to my computer for some reason so I can't look at codes... New fuel filter, no trash in the tank, fuel pressure good & stable when its running correctly... cant check it when it's screwing up

Last edited by ATCFLYBOY02; Oct 25, 2012 at 06:27 PM.
Reply
Old Oct 26, 2012 | 01:35 PM
  #3  
Red Devil's Avatar
Supreme Member
 
Joined: Apr 2000
Posts: 3,187
Likes: 0
From: E.B.F. TN
Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
Re: My L89 keeps cutting out... HHEEELLPPPP

Have you taken a fuel pressure reading?
When you replaced the pump did you replace the filter?
Did you seal the tank properly?
Have you checked the cat for glowing?
Have you inspected the MAF and wiring?
Possibly test the ignition switch.
Idk, there are a lot of things. More info.
Reply
Old Oct 26, 2012 | 05:53 PM
  #4  
ATCFLYBOY02's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Sep 2011
Posts: 316
Likes: 0
From: Birmingham, Alabama!!!
Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: My L89 keeps cutting out... HHEEELLPPPP

Fuel pressure is at 45
Yes I sealed the tank: new O-Ring around the sending unit
No cats, 3" from mid's back
MAF was just cleaned & the wiring looks great
What would I be checking the ignition switch for? it has power in & out...
Reply
Old Oct 27, 2012 | 11:54 AM
  #5  
urbanhunter44's Avatar
Supreme Member
iTrader: (3)
 
Joined: May 2004
Posts: 4,345
Likes: 1
From: Brighton, CO
Car: '72 Chevy Nova
Engine: Solid roller 355
Transmission: TH350
Axle/Gears: 8.5" 10-bolt 3.73 Posi
Re: My L89 keeps cutting out... HHEEELLPPPP

Sounds to me like it's pulling rust or some sort of crap out of the fuel tank and clogging the fuel filter, that's why it ran fine at first. Have you removed and checked the fuel filter since you drove it the 100 miles back home?
Reply
Old Oct 27, 2012 | 01:50 PM
  #6  
ATCFLYBOY02's Avatar
Thread Starter
Member
iTrader: (1)
 
Joined: Sep 2011
Posts: 316
Likes: 0
From: Birmingham, Alabama!!!
Car: 1988 Iroc-Z
Engine: 350 TPI; Stock internals
Transmission: 700r4; TCI-CPVB; BW Hi-Frition
Axle/Gears: 4th gen 7.5 w/ 3:42 gear
Re: My L89 keeps cutting out... HHEEELLPPPP

I have not checked the fuel filter again. I'll check it out in the morning to see what the diagnosis looks like.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
FormulasOnly
TPI
95
Jul 23, 2018 08:47 AM
SRKLEGIN
Interior Parts Wanted
5
Oct 12, 2015 07:28 AM
gord327
Transmissions and Drivetrain
19
Oct 3, 2015 01:25 PM
Spyder_TheGamer
V6
5
Oct 2, 2015 12:25 PM
SRKLEGIN
Interior
3
Sep 30, 2015 07:19 PM




All times are GMT -5. The time now is 07:20 PM.