I changed fuel pump on my 2002 Cadillac deville and reset timing,but when I start the car it doesn't idle well and it smokes black.what is the problem now?

SOURCE: No Spark in 95 Cadillac Deville 4.9

crank senser controls spark and injecters

SOURCE: 1996 CADILLAC DEVILLE, NO POWER TO FUEL PUMP

Check for a burned fusible link under the hood. If you have power at the fuel pump relay, you could have a bad ignition switch or bad oil pressure switch...accordianman

Dar

• 2007 Answers
• Posted on Feb 28, 2009

SOURCE: My 2002 cadillac deville white smoke from exhaust

Head gasket. There is antifreeze seeping into the cyllinder when it's not running. When you start it, it won't fire properly until that water is blown out the exhaust. Once it's gone, in a few seconds, just like you describe, it'll run fine. The antifreeze is then being blown out the exhaust. Re - white smoke.

SOURCE: was running fine but doesnt want to start now

Fords have the reset switch option only. Relays are mounted on the firewall

SOURCE: cadillac wont start 1996

Aye, I would check or have the Ignition control module checked. Also the crankshaft position sensor imputs to the ICM. No crank signal being recieved means the control module wont send the spark out as the module has no idea where the piston position is. Surprised your local GM techs could fix this. I am a GM and ASE master certified tech who has spent the last 9 years with our local Cadillac dealership.