Problem that I can not figure out!
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
Problem that I can not figure out! So after thinking it was an ignition problem and replacing plugs and wires, coil, icm and opti my car is still running like garbage. It first started a few months ago when I noticed my car hesitating very bad at low rpm's. I figured it was just a wire or something that got burnt on my headers, so I changed out my plugs and wires. After that it was still doing it so I figured it must be the opti since its still the stock one, I changed out the opti AND the coil at the same time. And to my surprise that wasn't it either. So out of frustration i went down autozone and bought a new icm thinking thats what it had to be! wrong again. Now the is a slight tick i can hear coming out the exhaust...
So now its has started to backfire but only when it heats up and its idling. It runs perfect before it heats up then it starts hesitating and backfiring. Now the is a slight tick i can hear coming out the exhaust. When I get on it and I am at a pretty low rpm like 2k it will feel like its missing or something really bad. Once the rpms get higher it starts pulling really hard and you would never even know there was a problem.
It is a '95 trans am with 92k miles. My mods are pacesetter LT's, true duals, !egr, !air
Quick summary:
- car runs perfect till it heats up
- hesitates very bad at low rpms
- recently started backfiring
- replaced opti, plugs and wires, coil and icm
now i'm thinking it could be a fuel or timing issue.
someone please help!! this is so frustrating!
So now its has started to backfire but only when it heats up and its idling. It runs perfect before it heats up then it starts hesitating and backfiring. Now the is a slight tick i can hear coming out the exhaust. When I get on it and I am at a pretty low rpm like 2k it will feel like its missing or something really bad. Once the rpms get higher it starts pulling really hard and you would never even know there was a problem.
It is a '95 trans am with 92k miles. My mods are pacesetter LT's, true duals, !egr, !air
Quick summary:
- car runs perfect till it heats up
- hesitates very bad at low rpms
- recently started backfiring
- replaced opti, plugs and wires, coil and icm
now i'm thinking it could be a fuel or timing issue.
someone please help!! this is so frustrating!
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
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Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
When you got new headers did you get coated ones? If so the coating inside of them can ruin o2 sensors when it is burning off for the first few miles.
I would take them back, they should be under warranty.
Also try cleaning the maf sensor, or try one out of another car that works.
I would take them back, they should be under warranty.
Also try cleaning the maf sensor, or try one out of another car that works.
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
When you got new headers did you get coated ones? If so the coating inside of them can ruin o2 sensors when it is burning off for the first few miles.
I would take them back, they should be under warranty.
Also try cleaning the maf sensor, or try one out of another car that works.
I would take them back, they should be under warranty.
Also try cleaning the maf sensor, or try one out of another car that works.
Can't be that as it's a 95' and OBDI only 2 O2's before the cat. As to the problem check for leaks in the exhaust (ticking you are hearing) as this can cause a false lean condition and making the PCM dump fuel richening up the mixture. Check your header gaskets first for leaks and go from there. Also, as everyone has said, invest in an ALDL cable (round $50) and log on your PC with datamaster so you can see what is going on.
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
Can't be that as it's a 95' and OBDI only 2 O2's before the cat. As to the problem check for leaks in the exhaust (ticking you are hearing) as this can cause a false lean condition and making the PCM dump fuel richening up the mixture. Check your header gaskets first for leaks and go from there. Also, as everyone has said, invest in an ALDL cable (round $50) and log on your PC with datamaster so you can see what is going on.
And thank all of you for your responses so far, I really need to get this fixed.
Last edited by 95phoenix; Nov 19, 2008 at 05:59 AM.
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 76
Likes: 0
From: west palm beach, fl
so after checking the header bolts to find that they were kinda loose i figured thats what the problem was. i replaced both header gaskets, and got stage 8 locking header bolts. and................ ITS STILL DOING IT!!!!
any other ideas?? cause im completely worn out and frustrated about it.
any other ideas?? cause im completely worn out and frustrated about it.