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Help! No fuel no spark

1K views 7 replies 3 participants last post by  Greg_Zeboray 
#1 ·
A week ago I lost all fuel pressure and assumed it was the fuel pump. Had it along with relay replaced and all was good for a few days. Then it happened again and this time has no spark or fuel pressure.

Happened while driving btw.

Any suggestions?
 
#2 ·
First thing you should do is pull the codes. Auto parts stores read them for free and might rent you a reader for a fee. Once you have the codes you'll know where to start looking. Without the codes I'd have to guess your problem is the Crankshaft Position Sensor.

The ECU uses its pulses to trigger the fuel injectors and ignition. The CPS is a common enough bug that it's the most probable contender. It's cheap as Cadillac parts go, and fairly easy to replace. If you do I suggest adding some heavy duty aluminum foil to shield its cable from the exhaust manifold. The following links lead to articles with info and pictures that will help in its replacement.

http://www.cadillacforums.com/forum...a-crankshaft-position-sensor-replacement.html
http://www.omegaowners.com/forum/index.php?topic=90540.0
 
#8 ·
I don't have any detail as it was done at the shop. He explained it as having gotten crimped when they put the first pump in, causing a short. Maybe it was their fault, but even if it was I don't care as he didn't charge me to fix it (could be taken as admitting guilt ?).
 
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