VonSchmills
Newbie
My 99 Suburban 5.7l w/240k
While in drive gear, if i'm idling or accelerating under light-medium load the motor will slighty shake and stumble.
Under WOT, the motor performs fine, running up the revs with ease.
If I am in Park gear, idle is super smooth and revving the motor doesn't cause a stumble or shake.
I've recently replaced the mass air flow sensor, sparkplugs, coil, cap/rotor, pcv valve, and air filter.
I also have no check engine light, even when the motor stumbles.
Any ideas?
While in drive gear, if i'm idling or accelerating under light-medium load the motor will slighty shake and stumble.
Under WOT, the motor performs fine, running up the revs with ease.
If I am in Park gear, idle is super smooth and revving the motor doesn't cause a stumble or shake.
I've recently replaced the mass air flow sensor, sparkplugs, coil, cap/rotor, pcv valve, and air filter.
I also have no check engine light, even when the motor stumbles.
Any ideas?
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