My buddy has a 6.0l LQ4 in his 04 Hummer H2. It has a surge around 1500 RPM and jumps to about 1700 rpm every few seconds. Speed is not a factor just RPM... no codes.
If his foot is in the throttle it goes away... just does it at cruise.
Thoughts??
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My buddy has a 6.0l LQ4 in his 04 Hummer H2. It has a surge around 1500 RPM and jumps to about 1700 rpm every few seconds. Speed is not a factor just RPM... no codes.
If his foot is in the throttle it goes away... just does it at cruise.
Thoughts??
anyone?
:(
nope, i was gunna say something about the idle but its not at idle.
Almost sounds like O2 switching from lean to rich (doubt it) , or could be A/C trigging timing , vacuum leak any number of things .Quote:
Originally Posted by Muddydawg75
Sounds like the torque converter acting up, mine does the samething in my 02 6.0L Denali and I am almost positive its the torque converter