Help a brother out! (93 LT1)
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Registered User
Joined: May 2014
Posts: 15
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From: Dallas, Texas.
Help a brother out! (93 LT1) So i pulled out my computer out of the Trans Am. It is apparently the root of all evil in my car. Anyone know how to test these if they are bad? Anyone in the north texas area want to help me test mine? This car has been a nightmare. Lol. Great car... When it runs.
Tags; camaro trans am firebird lt1 350 1993
Tags; camaro trans am firebird lt1 350 1993
Registered User
Joined: May 2014
Posts: 2
Likes: 0
Backfire out of left exhaust I have a 1993 Corvette with 27000 miles on it. After sitting a few days it starts normal, runs like a bear for 10 minutes(idle or on road) then starts popping out of the leftside exhaust. At idle you can hear the pop/pop/pop and when you give it gas it bangs loudly. After about 60 minutes of sitting or 10 minutes of driving it runs fine all day long. During the pop/pop phase if you do a restart it sounds like the spark is over advanced and you hear a click and then it starts. This all seems to start at 195-205 degrees. It's like clockwork-exactly 10 minutes.
No SEL, No codes, no sparks in the dark, no sign of leakage from water pump,no bubbling in radiator.no steaming. Idle RPM is steady. OBD1 scan shows nothing is wrong(O2 sensors,CTS,etc). All grounds checkout, tried packing ice around ICM/coil. vacuum lines not cracked or leaking. Injector balance test ok. If I drive it everyday--no problem!! I'd hate to change the opti without being convinced that's the problem. It still gets 26+ MPG.
Anybody seen this before? If this is the wrong forum pls let me know.
Thanks
No SEL, No codes, no sparks in the dark, no sign of leakage from water pump,no bubbling in radiator.no steaming. Idle RPM is steady. OBD1 scan shows nothing is wrong(O2 sensors,CTS,etc). All grounds checkout, tried packing ice around ICM/coil. vacuum lines not cracked or leaking. Injector balance test ok. If I drive it everyday--no problem!! I'd hate to change the opti without being convinced that's the problem. It still gets 26+ MPG.
Anybody seen this before? If this is the wrong forum pls let me know.
Thanks
