L98 stalling issue
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Joined: May 2020
Posts: 9
Likes: 1
From: Colorado
L98 stalling issue
so, lately my 89' corvette is having this issue where, i could be chugging along gently at 30mph, and the engine just loses revs and shuts off, almost no noise, electronics remain on and indicate 0 rpm. then, seconds later the engine starts back up on its own and continues like normal. My corvette has a little bit of an electric circus happening with the A/C controls, so someone suggested a piggyback chip, others said it could be a vacuum line or timing issue, someone said i dont keep revs high enough (ive never driven my corvette above 50mph, because i want to keep everything intact with it and preserve it) im not sure what the problem is. does anyone have an idea what the problem could be?
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
If it happens frequently I suggest you tape a fuel pressure gauge onto the windshield and drive around a bit to see if it's losing pressure when it shuts off.
At 30mph what RPM is it turning?
Oh, and what is the voltage reading when it shuts down?
At 30mph what RPM is it turning?
Oh, and what is the voltage reading when it shuts down?
Last edited by 65Z01; Jul 22, 2020 at 05:11 PM.
Drifting
Joined: Nov 2015
Posts: 1,712
Likes: 331
Finalist 2020 C4 of the Year - Unmodified
Fuel-Air-Spark
My '87 had a problem where it would cut out when off the throttle, but start fine and keep going with throttle.
Key problem was old spark plug wires, they were cracked and nasty. Replacement resolved the problem.
Check the wires for cracks, age and so forth.
My '87 had a problem where it would cut out when off the throttle, but start fine and keep going with throttle.
Key problem was old spark plug wires, they were cracked and nasty. Replacement resolved the problem.
Check the wires for cracks, age and so forth.
