3.8 camaro engine issue
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Joined: May 2021
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3.8 camaro engine issue
Hi all, sorry If not allowed but run out of talent and didn't get any help anywhere else!
I'm from Europe and specialised on BMW-s, now fixing a 4gen 1996 3.8 v6 camaro for a friend.
The main issue was: the oil went in the water and the engine didn't run properly, it was keep stalling and had a bad reaction for the throttle.
He was told all the issues caused by the intake gaskets so I replaced everything for him, but the idle and throttle issue is still there. When you floor the throttle, it just stalls.
I wanted to make a diagnostic through the obd2 port, but there was no response from the diagnostic port unfortunately.
We ordered an ignition coil and started to change them one by one but obviously all the cylinders are running now even though it keeps stalling.
After the igniton coil replacement, it started running differently, after start up it revs up upto about 4000 and then it slowly stalls.
I unplugged the connector of maf and throttle position sensors, and it didn't make any difference.
My question is:
-does anyone have a clue of what the issue could be?
-why the obd port is doesn't work with my universal diagnostic tool? We've checked all the fuses and they're okay!
-where the ground cables are located that is responsible for the engine management?
Thank you!
I'm from Europe and specialised on BMW-s, now fixing a 4gen 1996 3.8 v6 camaro for a friend.
The main issue was: the oil went in the water and the engine didn't run properly, it was keep stalling and had a bad reaction for the throttle.
He was told all the issues caused by the intake gaskets so I replaced everything for him, but the idle and throttle issue is still there. When you floor the throttle, it just stalls.
I wanted to make a diagnostic through the obd2 port, but there was no response from the diagnostic port unfortunately.
We ordered an ignition coil and started to change them one by one but obviously all the cylinders are running now even though it keeps stalling.
After the igniton coil replacement, it started running differently, after start up it revs up upto about 4000 and then it slowly stalls.
I unplugged the connector of maf and throttle position sensors, and it didn't make any difference.
My question is:
-does anyone have a clue of what the issue could be?
-why the obd port is doesn't work with my universal diagnostic tool? We've checked all the fuses and they're okay!
-where the ground cables are located that is responsible for the engine management?
Thank you!
April 2011 ROTM
Joined: Mar 2009
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From: Tokeland, Washington
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wow, sounds like multiple issues. fuel pump may be getting weak, check fuel pressure, head gasket may be failing do compression test. was the upper and lower intake gaskets changed?
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The fuel pressure seemed OK for me, and yes I've done both gaskets with all the other gaskets and seals in the surrounding area.
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October 2009 ROTM
October 2009 ROTM
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You are going to need to go through the GM trouble tree for no response from the communication port. Could be anything from a loose ground to a failed PCM. I don't think there is a short cut here nor is there a common issue. Carful just following advice on the internet. You get a lot of "I had the same issue and it was this" only problem is unless its a common issue there can be a lot of thing and cause the same problem.
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