C4 bucking under load
Thread Starter
2nd Gear
Joined: Apr 2008
Posts: 2
Likes: 0
C4 bucking under load
When driving in 6sp if I try to accelerate the car bucks. If I put a load on the engine without dropping down a gear the motor bucks. If I pick up the speed by increasing the RPMs by lowering a gear its fine.
Stock motor and 6sp tranny. I don't drive it very much.
Stock motor and 6sp tranny. I don't drive it very much.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
That's kinda how a manual works if RPMs at too low. A preventive maintenance tune up may help. Plugs and wires, cap and rotor if a L98. Optispark would be more involved, since water pump has to come off to change.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
It might also be a failing EGR valve.
They kick in when there is heavy loading... so unless you are trying to accelerate from 25 mph in 6th (which is impossible)... What speeds ARE you doing?
They kick in when there is heavy loading... so unless you are trying to accelerate from 25 mph in 6th (which is impossible)... What speeds ARE you doing?
