1985 corvette weird thing
Thread Starter
Advanced
Joined: Dec 2018
Posts: 71
Likes: 7
1985 corvette weird thing
Okay.
one day I startup my car and it runs fine, the next it does some weird things.
or one hour to the next it goes back and forth
SOMETIMES when I drive (a lot of the time) I’ll be driving and the car will 1. Just die off or 2. It will be driving and then suddenly I hear kind of a “thump” and it won’t accelerate correctly and thumps.
i dont know how to describe it.
the RPMs seem to be all over the place too.
help
one day I startup my car and it runs fine, the next it does some weird things.
or one hour to the next it goes back and forth
SOMETIMES when I drive (a lot of the time) I’ll be driving and the car will 1. Just die off or 2. It will be driving and then suddenly I hear kind of a “thump” and it won’t accelerate correctly and thumps.
i dont know how to describe it.
the RPMs seem to be all over the place too.
help
Thread Starter
Advanced
Joined: Dec 2018
Posts: 71
Likes: 7
Tech Contributor
Joined: Oct 2008
Posts: 3,729
Likes: 190
From: Custer, WI
the MAF itself at the sensor. when you do this the ECM defaults to stock airflow tables (or something like that)
When my car would do it, i could actually smack the breadbox and the car would start running normally again. The module is mounted behind the breadbox
Given that you stated you replaced the fuel pump i think its worth checking the fuel pressure when the engine is acting up
is it throwing any check engine codes?
When my car would do it, i could actually smack the breadbox and the car would start running normally again. The module is mounted behind the breadbox
Given that you stated you replaced the fuel pump i think its worth checking the fuel pressure when the engine is acting up
is it throwing any check engine codes?
Thread Starter
Advanced
Joined: Dec 2018
Posts: 71
Likes: 7
the MAF itself at the sensor. when you do this the ECM defaults to stock airflow tables (or something like that)
When my car would do it, i could actually smack the breadbox and the car would start running normally again. The module is mounted behind the breadbox
Given that you stated you replaced the fuel pump i think its worth checking the fuel pressure when the engine is acting up
is it throwing any check engine codes?
When my car would do it, i could actually smack the breadbox and the car would start running normally again. The module is mounted behind the breadbox
Given that you stated you replaced the fuel pump i think its worth checking the fuel pressure when the engine is acting up
is it throwing any check engine codes?
when you try to drive it’ll like hesitate with kind of a banging noise and stuff like that.
Then sometimes the car would just turn off.
Breadbox?
edit: okay nevermind. The impact cusion thing is the breadbox. Let me try smacking it and see if it works 😂 if not replace the module behind it?
Last edited by Mason123; Apr 3, 2019 at 07:25 PM.
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