Jafari Posted February 6, 2009 Report Share Posted February 6, 2009 I have a 99 STS. The car starts when it wants. It will turn over but doesn't start. A shop stated that it’s not getting any fire and told me that it is the ignition module, changed that the problem persists. Then I was told it’s the crank sensors, changed them and the problem persists. I have had the codes checked but there aren’t any. If the car sits for a while, let’s say over night and try to start it and it cranks right up like nothings wrong. It will not cut off while running. Can anyone please help? Link to comment Share on other sites More sharing options...
JimD Posted February 6, 2009 Report Share Posted February 6, 2009 ....I have had the codes checked but there aren’t any. Next time it fails to start, check the codes yourself. Here's how; http://www.caddyinfo.com/readingcodes.html You will be most interested in "P" codes. It would be worth knowing your actual fuel pressure reading at the fuel rail whenever the engine fails to start. This would require you to buy a fuel pressure gauge. Sounds to me like whoever is working on your car is not really heavy into diagnostics! Much more into "throwing parts at it". Or "guessing". At your expense. Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
SPreston2001 Posted February 7, 2009 Report Share Posted February 7, 2009 Fuel pressure regulator? It definetely seems fuel related and fairly simple. Link to comment Share on other sites More sharing options...
Jafari Posted February 10, 2009 Author Report Share Posted February 10, 2009 Hey guy's. The CKP replacement actually resolved the issue. The problem was that the computer was never reset after it was replaced. Once it was reset the car stated every time. The problem now is that once the car is warm and at idol, it will stall. You can drive it and once you stop it stalls out. The only code that the car registers is P1599 “Engine Stall or near stall Detected. I looked the problem up and found that a guy was having the exact same problem after replacing the CKP. What he found out was that one on the sensors had 2 O rings. The old one was stuck to the block, which also caused a few other problems I was having right before the CKP went bad. After removing the O ring, the car ran great. I’m going to check that this weekend and let you guys know the results. Link to comment Share on other sites More sharing options...
Jafari Posted February 16, 2009 Author Report Share Posted February 16, 2009 That was it. The top CKP had two rings. Removed one and the car ran well. Thanks guy’s Link to comment Share on other sites More sharing options...
Texas Jim Posted February 17, 2009 Report Share Posted February 17, 2009 Jafari, Thank you for reporting back and letting us know what solved the problem. It may help someone else in the future. Link to comment Share on other sites More sharing options...
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