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

What to do next

Thread Tools
 
Search this Thread
 
Old Feb 22, 2017 | 12:12 PM
  #1  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
What to do next

92 camaro rs tbi 305. I have checked for fuel pressure and it's perfect, I have great spark and every ignition component is new. The fuel pump filter regulator relay are all new and the tank and sending unit. Had a mechanic looking at it and he told me there are no vacuum leaks or anything. So I'm stumped trying to figure out the problem. The car turns on but as soon as it's given gas it dies. I was told maybe the iac but the car runs off of starting fluid. So what could be the problem ? The mechanic is still diagnosing but i would like some help from anyone that can give me input at what to look at.
Reply
Old Feb 22, 2017 | 12:45 PM
  #2  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (94)
 
Joined: Dec 2004
Posts: 16,734
Likes: 993
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: What to do next

Has he checked the tps ?
If it is the iac sticking open the vacuum leak causes high idle, stuck closed lo indie.
Reply
Old Feb 22, 2017 | 12:47 PM
  #3  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

Yes, he said it was working fine I had replaced it a while back.
Reply
Old Feb 22, 2017 | 12:51 PM
  #4  
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: What to do next

Check the 2 Injector fuses. If it runs on gas you spray, Injectors my not be spraying. HTHs



Reply
Old Feb 22, 2017 | 12:51 PM
  #5  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

I replaced both of them but I didn't do the reset procedures. Another memember told me if the car is running off of starter fluid that the iac should be fine. Mentioning I didn't reset or fix both correctly could that very well be the problem. And if both were off would I be getting exactly the symptoms I am right now?
Reply
Old Feb 22, 2017 | 12:53 PM
  #6  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

@Bob88GTA both injectors are spraying, but when you start the vehicle and give it gas they cut off. So I know I'm getting fuel with the right pressure but it cuts off once running
Reply
Old Feb 22, 2017 | 01:02 PM
  #7  
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: What to do next

Originally Posted by Anthony0128
@Bob88GTA both injectors are spraying, but when you start the vehicle and give it gas they cut off. So I know I'm getting fuel with the right pressure but it cuts off once running
Gotcha...
Reply
Old Feb 22, 2017 | 01:03 PM
  #8  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (94)
 
Joined: Dec 2004
Posts: 16,734
Likes: 993
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: What to do next

Could be a bad map, it would need to be tested.
Any codes ?

Last edited by Tuned Performance; Feb 22, 2017 at 01:26 PM.
Reply
Old Feb 22, 2017 | 01:07 PM
  #9  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

The car has a map sensor not the maf & nope none at all
Reply
Old Feb 22, 2017 | 01:26 PM
  #10  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (94)
 
Joined: Dec 2004
Posts: 16,734
Likes: 993
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: What to do next

Originally Posted by Anthony0128
The car has a map sensor not the maf & nope none at all
Spell checker !
http://troubleshootmyvehicle.com/gm/...timeter-test-1
Reply
Old Feb 22, 2017 | 01:53 PM
  #11  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

I'll ask him to check it but wouldn't I have a ses light on?
Reply
Old Feb 22, 2017 | 03:05 PM
  #12  
Tuned Performance's Avatar
Sponsor
20 Year Member
Community Builder
Community Influencer
Community Favorite
iTrader: (94)
 
Joined: Dec 2004
Posts: 16,734
Likes: 993
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: What to do next

A faulty MAP sensor can cause some fuel delivery problems and not turn on the SES light 33,34 malf .
A faulty Icm can cause odd issues as well.

Last edited by Tuned Performance; Feb 22, 2017 at 03:14 PM.
Reply
Old Feb 22, 2017 | 03:07 PM
  #13  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

Well I'll make sure to check it out, I'll let you know if I find anything or if the mechanic does. What would cause this to go bad though ?
Reply
Old Feb 22, 2017 | 11:32 PM
  #14  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

So I spoke to another mechanic and he said it might be the vats not letting the car run. That I would have to reprogram the key the computer or something along the lines of that. Is it possible?
Reply
Old Feb 23, 2017 | 02:50 AM
  #15  
henryd3's Avatar
Supreme Member
15 Year Member
iTrader: (128)
 
Joined: Aug 2009
Posts: 1,821
Likes: 40
From: Central California
Car: 92 Camaro RS
Engine: LO3
Transmission: T5
Axle/Gears: stock
Re: What to do next

If it was VATS the starter wouldn't work and it couldn't even try and start. You would just turn the key and get nothing and the security light would stay on
Reply
Old Feb 23, 2017 | 07:28 AM
  #16  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

So what could it possibly be then?
Reply
Old Feb 23, 2017 | 08:36 AM
  #17  
redneckjoe's Avatar
Supreme Member
 
Joined: Sep 2011
Posts: 2,080
Likes: 34
From: Spring Hill, Fl.
Car: 87 iroc-z
Engine: 454
Transmission: th350
Axle/Gears: 3.73
Re: What to do next

sounds like a fuel delivery problem. i'll vote/guess a bad TPS.
Reply
Old Feb 23, 2017 | 08:40 AM
  #18  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

But the tps is brand new and it's not adjustable on a tbi. Mechanic checked it said it was good
Reply
Old Feb 23, 2017 | 09:10 AM
  #19  
redneckjoe's Avatar
Supreme Member
 
Joined: Sep 2011
Posts: 2,080
Likes: 34
From: Spring Hill, Fl.
Car: 87 iroc-z
Engine: 454
Transmission: th350
Axle/Gears: 3.73
Re: What to do next

when you look in the throttle body with the car idling, if you give it any throttle it stops spraying fuel?
Reply
Old Feb 23, 2017 | 09:28 AM
  #20  
Anthony0128's Avatar
Thread Starter
Member
 
Joined: Jun 2016
Posts: 150
Likes: 0
Re: What to do next

Yes sir, it's like something cuts it off as soon as the car starts. Giving it gas just cuts it even faster. Which is why I'm confused because it has the spark and fuel pressure. Pump is 3 days old and sending unit in it is about a week old. Filter is new and regulator is too. Which is why I'm going nuts cause what more could it be
Reply




All times are GMT -5. The time now is 04:11 AM.