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

GTA 5.7- injectors ? Or is it my ECM? PROBLEM SOLVED!

Thread Tools
 
Search this Thread
 
Old Jun 21, 2014 | 06:26 PM
  #1  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
GTA 5.7- injectors ? Or is it my ECM? PROBLEM SOLVED!

After driving 3 or 4 miles in 90 degree weather my car starts to buck, looses power and then stops completely. I have to wait about 30 minutes before it would stay running long enough to get home. I just put in a new MAF thinking it was the issue but it hasn't changed. Any ideas? Car only has 100,000 miles but hasn't been driven much at all in the last few years. The temp gauge stops at 160 degrees.

Last edited by mper11; Jun 24, 2014 at 09:50 AM.
Reply
Old Jun 21, 2014 | 07:44 PM
  #2  
Bob88GTA's Avatar
Supreme Member
20 Year Member
iTrader: (2)
 
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 88 GTA 5.7- could my injectors be getting to hot?

Did you pull any codes yet? That would be the first thing.
Reply
Old Jun 21, 2014 | 09:06 PM
  #3  
ex-x-fire's Avatar
Supreme Member
15 Year Member
Liked
 
Joined: Jan 2011
Posts: 1,732
Likes: 4
Re: 88 GTA 5.7- could my injectors be getting to hot?

Running the engine at 160 or less isn't the greatest thing to do,(it runs leaner & cleaner at 195*) sounds like you cat converter is plugged.
Reply
Old Jun 22, 2014 | 12:55 PM
  #4  
rusty vango's Avatar
Supreme Member
 
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: 88 GTA 5.7- could my injectors be getting to hot?

Originally Posted by mper11
After driving 3 or 4 miles in 90 degree weather my car starts to buck, looses power and then stops completely. I have to wait about 30 minutes before it would stay running long enough to get home. I just put in a new MAF thinking it was the issue but it hasn't changed. Any ideas? Car only has 100,000 miles but hasn't been driven much at all in the last few years. The temp gauge stops at 160 degrees.
a NEW MAF? or a cheapo re-man one from auto zone? that may well be your problem . man, I bought SEVEN of them before I got wise and bought a new one from "rich porter".
Reply
Old Jun 22, 2014 | 01:29 PM
  #5  
sofakingdom's Avatar
Supreme Member
20 Year Member
Community Builder
iTrader: (1)
 
Joined: Sep 2005
Posts: 27,866
Likes: 2,428
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: 88 GTA 5.7- could my injectors be getting to hot?

No, the injectors won't do that.

Check the fuel pressure, WHILE IT'S IN THE ACT OF SCREWING UP (not just, sitting in the driveway happily idling)

Fix the temp gauge. Kinda ... risky ... to drive around with a temp gauge that doesn't cover the normal operating range of the thing it's supposed to be measuring.
Reply
Old Jun 22, 2014 | 01:34 PM
  #6  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot?

I tried pulling codes with a paperclip. And it doesn't even flash 12? Could this mean I have a bad the ECM?
Reply
Old Jun 22, 2014 | 02:06 PM
  #7  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot?

Even worse I got the MAF off ebay. It came off a GTA that was hit in the rear quarter and then parted out. I have a sneaking suspicion it's the ECM since I can't pull any codes. Is it safe to get one from Auto Zone?
Reply
Old Jun 22, 2014 | 04:12 PM
  #8  
Ghettobird52's Avatar
Supreme Member
 
Joined: Apr 2010
Posts: 1,015
Likes: 5
From: Modesto, California
Car: 88 Firebird Formula
Engine: LO5 5.7 TBI/Ebl Flash
Transmission: 700R4
Axle/Gears: 2.73 stock rear end
Re: 88 GTA 5.7- could my injectors be getting to hot?

What ever you do DO NOT BUY IT from AutoZone. Go to a junkyard and pull one for $17.99
Reply
Old Jun 22, 2014 | 05:29 PM
  #9  
rusty vango's Avatar
Supreme Member
 
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: 88 GTA 5.7- could my injectors be getting to hot?

Originally Posted by mper11
Even worse I got the MAF off ebay. It came off a GTA that was hit in the rear quarter and then parted out. I have a sneaking suspicion it's the ECM since I can't pull any codes. Is it safe to get one from Auto Zone?
I got mine from oreilleys, then I had a custom chip burned.TADAAA! no more problem. and if you do get a re-man ECM....... DO NOT under any circumstances get from auto zone
Reply
Old Jun 22, 2014 | 06:44 PM
  #10  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot?

Guess it had a re manufactured one in it already.
Attached Thumbnails GTA  5.7-  injectors ? Or is it my ECM? PROBLEM SOLVED!-20140622_194949.jpg   GTA  5.7-  injectors ? Or is it my ECM? PROBLEM SOLVED!-20140622_195001.jpg  

Last edited by mper11; Jun 22, 2014 at 06:51 PM.
Reply
Old Jun 22, 2014 | 06:46 PM
  #11  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot?

Took out the ECM or ECC and look what I found....
Attached Thumbnails GTA  5.7-  injectors ? Or is it my ECM? PROBLEM SOLVED!-20140622_152649.jpg  
Reply
Old Jun 22, 2014 | 08:43 PM
  #12  
rusty vango's Avatar
Supreme Member
 
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: 88 GTA 5.7- could my injectors be getting to hot?

Originally Posted by mper11
Took out the ECM or ECC and look what I found....
look, theres a guru on here that does chips ,"tuned performance" he burned my chip as he has done for countless others .he is THE man for the job. light years away from hyper junk. give him a shout. he can help you too
Reply
Old Jun 23, 2014 | 02:23 PM
  #13  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot?

Originally Posted by rusty vango
look, theres a guru on here that does chips ,"tuned performance" he burned my chip as he has done for countless others .he is THE man for the job. light years away from hyper junk. give him a shout. he can help you too
Thanks I'll do that.
Reply
Old Jun 23, 2014 | 02:37 PM
  #14  
Bob88GTA's Avatar
Supreme Member
20 Year Member
iTrader: (2)
 
Joined: Apr 2000
Posts: 3,938
Likes: 99
From: Huntsville AL
Car: 88GTA
Engine: 5.7TPI
Transmission: Auto
Axle/Gears: 3.27
Re: 88 GTA 5.7- could my injectors be getting to hot?

Tuned Performance does an awesome job! Highly recommended, but you still haven't addressed the "no code" issue......or did you?
Reply
Old Jun 23, 2014 | 03:45 PM
  #15  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot? Or is it my ECM?

Im getting a new ECM today, im gonna use the old hypertech memcal just to see if I can pull any codes. I do want to get a new chip from Brian @ tuned performance.
Reply
Old Jun 23, 2014 | 09:03 PM
  #16  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: 88 GTA 5.7- could my injectors be getting to hot? Or is it my ECM?

SUCCESS! New ECM did the trick..
Reply
Old Jun 24, 2014 | 09:51 AM
  #17  
mper11's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2014
Posts: 14
Likes: 0
From: Cooper City, Florida
Car: 1988 GTA
Engine: 5.7 355
Transmission: automatic
Re: GTA 5.7- injectors ? Or is it my ECM? PROBLEM SOLVED!

Would the ECM be effecting the temp gauge reading? It's now operating at 190-195

Last edited by mper11; Jun 24, 2014 at 11:01 AM.
Reply
Old Jun 24, 2014 | 10:01 AM
  #18  
rusty vango's Avatar
Supreme Member
 
Joined: Jun 2011
Posts: 2,036
Likes: 5
From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: GTA 5.7- injectors ? Or is it my ECM? PROBLEM SOLVED!

Originally Posted by mper11
I think the ECM was effecting the temp gauge reading? It's now operating at 190-195
the ECM has nothing to do with the temp gauge working or not.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bryan623
TPI
7
Mar 22, 2021 06:43 PM
gta90
TPI
40
Sep 15, 2015 04:00 PM
Jae992
TBI
3
Aug 27, 2015 09:07 AM
Bryan F
Tech / General Engine
2
Aug 18, 2015 02:28 PM
djmarch
DFI and ECM
1
Aug 10, 2015 08:42 AM




All times are GMT -5. The time now is 06:07 PM.