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Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
Cables????? Search "wire loom". Never put oil on any wire.
Gotta ask........ go back to post #2 where I gave you a link in blue, did you click on it and READ it? If so, do what it says, that is how you address your issue. Sounds like you did items 1-3, what about 4, 5, 6 and 7?
Second that,
Man, Doc is ONE of THE masters, what's about our rigs in here....... did your realy inspect the points,4 to 7 ??Eaven me, I don't think so.
TOOK SOME TIME BUT MOST DONE
All items done with GM OEM parts
DONE Twice 1) Clean the TB with TB cleaner only.... there are multiple threads on this, the best way to do it is remove it, clean it, re-install it;
DONE Twice 2) Clean the MAF sensor using MAF cleaner only... there are multiple threads on this (might as well while you have the intake apart to clean the TB);
REPLACED 3) inspect the coil on plug packs and their connectors to the wire harness and any obvious signs of corrosion from water on top of the head;
Not DONE 3.5) Check to see if ALL of your intake manifold fasteners are tight (they do vibrate loose on occasion) to 10 N.m/89 lb in.
If the problem still persists, and you have more than 70K miles (plugs should go damn near every bit of 100K in these trucks). If you do not have more than 70K miles, skip to #6 or feel free to change plugs for the sport of it: REPLACED 4) change the spark plugs and inspect them for evidence of any fouling;
REPLACED 5) while the plugs are out, look closely at the plug on coil packs to see if there is internal corrosion, if so clean them with electrical cleaner spray and allow to dry before placing them back on the plugs.
REPLACED 6) Pull the camshaft actuator solenoid and look for crud on the sensor, on the screen in the motor, or a missing screen... replace if necessary, tighten mounting bolt to 10 N.m/89 lb in.
TEST DONE a couple weeks ago 7) Then do a compression test, a normal read would be appx 1482 kPa/215 PSI. You can follow that with a leak down test.
1 = 165
2 = 165
3 = 165
4 = 155
5 = 150
Leak down was 50%
Not Done - According to Hummerz when a leak down test shows a valve not seating properly, he performs an induction cleaning first, worked on his rig, and many of his customer's vehicles.
I will let you guys know how it is. I need some time to drive. It only happens occasionally. But sometimes often.
