Question about 1999 Cadillac Catera

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Have a 1999 catera would not start. replacd cps still wont start any ideas relays control this?turns over fine but wont start still??

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  • stephen_hamb Jan 03, 2011

    last I checked befor Cps replace ment it had fire. and injectors were working. whats supost to be the WET compression on this moter?. Timing seems Right on the marks..might have bad Head Gasget. all ready did the valve cover I will check them again make sure still fire is still there and gas pressure..this is odd when I did OBD2 on it, it gave the Cps CAM Bad code, not Crank but every 1 I talked to said replace the Cps for Crank......where is the control for coils? and there is a relay box under Driver side GRAY 1 that enables befor starting is allowed..it controls the trunk and radio and gas door..it has 4 diffant relays in it ,I have.all ready had problems with it.trunk ,radio.. please help..any ideas?

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Need to check to see if it had fire also check fuel pressure

Posted on Jan 03, 2011

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Hello carol...from the symptons you describe more than likely it's the CPS (crankshaft position sensor.)
The CPS is a common problem on Cateras with these symptoms.
The sensor is a magnetic impulse type that sends a signal to the computer, the computer then triggers the fire signal. When the CPS gets weak, dirty or has low voltage the intermitten no starts occur. It will finally result in a no start at all...Please be aware that a lot of caddy dealers will and have overcharged customers for this common problem by ill advise and replaceing uneeded componets.
Good luck...i hope this helps and will fixya up.

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1999 cadillac catera


probably the CPS sensor , crank position sensor , first I would have someone turn the key when its not starting and tap on the fuel tank with a rubber mallet , if it starts the fuel pump is going bad

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1 Answer

1999 cadillac catera


Crankshaft position sensor is the most likely problem.

Oct 10, 2008 | 1999 Cadillac Catera

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