1995 Pontiac Bonneville

1995 PONTIAC BONNEVILLE

150,000 MILES • 6 CYL • FWD • AUTOMATIC

BOBBYO

MEMBER
1 POST
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MY BROTHER AND I REPLACED MY TRANNY, WHEN WE GOT FINISHED WE STARTED THE CAR AND IT RUNS ROUGH. IT THROWS A TROUBLE CODE QDM. ALSO THE VOLTMETER GAUGE READS LOW (ABOUT 10V) SO WE REPLACED THE ALTERNATOR AND HAD IT TESTED AND THE OLD ALTERNATOR WAS BAD. WE ALSO HAD THE STARTER TESTED AND ITS FINE. HOWEVER WHEN WE PUT THE NEW ALTERNATOR ON IT STILL RUNS THE SAME. MY BROTHER SAID THE COMPUTER INDICATED THERE WAS LOW VOLTAGE TO THE PCM. ALSO THE COOLING FAN AND AC DO NOT WORK NOW WE HAVEN'T MESSED WITH ANY OF THOSE SYSTEMS.

Dec 31, 2007 at 9:45 PM

MHPAUTOS

CAR REPAIR CONTRIBUTOR
31,937 POSTS

Hi there,

have a good look around the engine , especially the in let manifold, sometime when a transmission is removed the engine hanging low on the mounts can disconnect a vacuum line or a loom plug, it may be something you have not touched. Get the engine running then worry about the electrical issues.

Mark (mhpautos)

Jan 1, 2008 at 2:45 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.