is this normal?
is this normal? I got a red 99 ls1 camaro, and my car seems like it doesn't want to slow down when i let off the gas. i will be driving down the road at around 30mph and let off the gas and the car will stay at that 30 mph constantly.. when i stop at a stop light the car will slow down to around 750rpm and then a couple seconds later it will go down to around 600rpm where it should be and it will speed up to around that 750-800rpm when i let off the brake on its own.. and also i can feel the car downshift to 3rd..then 2nd...then 1st pretty harshly. i took it to a garage here in town and they changed the pcm tube because it had some cracks in it. it seems a little better but the car still seems to not want to slow down like i think normally it should. is this normal or do i have a problem somewhere,
TECH Fanatic
Joined: Oct 2008
Posts: 1,183
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From: VA
well i have noticed the other fam cars (grand am gt, v6 contour mx6 ls) slow down quite quickly at highway speeds. its seems to take a lot longer in my car. could be aerodynamics since our windscreens are so flat or maybe just the high gear i dunno.
sounds like some issues with the auto tranny or computer not knowing exactly whats going on. have you checked all the sensors?
sounds like some issues with the auto tranny or computer not knowing exactly whats going on. have you checked all the sensors?
sounds like you still have a vac. leak somewhere in the intake mabe intake gaskets or you have a sticky idle control valve. remove the idle control valve and clean it with some intake cleaner just dont soak it and dont misplace the o-ring gasket for it , reinstall . then while the car is running spray the intake with the intake cleaner and see if the idle changes this will indicate a vac. leak . good luck
Last edited by blackair; Jan 24, 2009 at 09:52 PM. Reason: adding more info
