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Cadillac DeVille Electrical/Lighting

151 messages,  Last post on Oct 27, 2009 at 1:37 PM

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What is this discussion about? Cadillac DeVille, Lights, Electrical, Sedan

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#2 of 151 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code by tbeb Oct 30, 2005 (7:16 am)
My 1995 Cadillac Deville with 4.9 liter engine hesitates when I accelerate. How frequent? It seems that depends on what the outside temperature is. I bought this car in 2000, and have had this problem since 2001. My mechanic feels it's a computer problem. He says my car has 3 "computers". He's not sure which one to replace, so he would replace one at a time until problem is remedied. He suggested I just drive it as it is, so that's what I've done. Anyhow, if I remember right, the computer trouble code is P041 (which has to do with the camshaft position circuit). I replaced the camshaft position sensor, and that didn't help at all. I troubleshot this circuit the best I could, and didn't find anything. This hesitation problem is annoying. I would like to get it fixed without having to replace all computers. Any suggestions? Thanks in advance. Replies to this message: gbu28 (Dec 18, 2005 10:54 am) kirainmt (Apr 14, 2006 5:09 pm) caddynuts (Apr 22, 2006 9:36 am) vic8 (Apr 22, 2006 10:02 am) kirainmt (Apr 28, 2006 8:34 am)
#3 of 151 Re: 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code [tbeb] by gbu28 Dec 18, 2005 (10:54 am)
Replying to: tbeb (Oct 30, 2005 7:16 am) Hi, My name is James Miller. I have a 94 DeVille and I have the same problem you do with your 95. I ws wondering if you have gotten it fixed yet and I you did what was the problem. Thanks James gbu28yahoo.com
#4 of 151 Re: 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code [tbeb] by kirainmt Apr 14, 2006 (5:09 pm)
Replying to: tbeb (Oct 30, 2005 7:16 am) I am having the same problem. I replaced the ignition control moduel, the spark plugs and wires and now it is running good. The only problem is that the P041 code always comes back on. Does anyone know how to keep it from coming back? Replies to this message: caddynuts (Apr 22, 2006 9:36 am) vic8 (Apr 22, 2006 10:02 am) kirainmt (Apr 28, 2006 8:34 am)
#5 of 151 Re: 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code [kirainmt] by caddynuts Apr 22, 2006 (9:36 am)
Replying to: kirainmt (Apr 14, 2006 5:09 pm) From experience, you must reset the computer memory. Your code is still in your computer memory.   Steps to Reset: Turn ignition key to on position (do not start car) Disconnect positive battery terminal while key is in on position (instrument panel lights on only). Wait a couple of minutes. Turn key off. Reconnect positive battery terminal. *Note This Process Erases All Trouble Codes! But keep in mind they will come back if the condition is not fixed.
#6 of 151 Re: 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code [kirainmt] by vic8 Apr 22, 2006 (10:02 am)
Replying to: kirainmt (Apr 14, 2006 5:09 pm) Hi I have a 1997 Caddy Deville,in your last message you said you replaced the plugs and wires.I have to change mine too. My question is,are 4 of your plugs positioned in the rear of the engine,close to the fire wall?If they are can you tell me,the best way to take them out.Thanks for your time! Replies to this message: kirainmt (Apr 28, 2006 8:34 am)
#7 of 151 Re: 1995 Deville-4.9L-Engine Hesitation-P041 Trouble Code [vic8] by kirainmt Apr 28, 2006 (8:34 am)
Replying to: vic8 (Apr 22, 2006 10:02 am) Yes, 4 of the spark plugs are next to the firewall. We used a rachet wrench don'y remember the sixe off hand, it is a very small space so you might have to turn them by hand to get them out. It takes some time to get them out. My engine hesitation has come back in the last week or so, do you have this problem also?
#8 of 151 92 Deville Electrical Problem by chrisk2 Nov 11, 2005 (7:24 am)
I have a 92 Coupe Deville with a big problem. My check engine light keeps coming on and the dash lights flash on and off. Also, if my car sits for to long the battery drains. I had a new battery and battery cables put on but I still have the same problem. Also, at times the heater comes on and I can't turn it off. Any suggestions would be appreciated. Replies to this message: joe771476 (Nov 26, 2005 11:40 am) 92marondeville (Jan 12, 2006 1:00 pm)
#9 of 151 Re: 92 Deville Electrical Problem [chrisk2] by joe771476 Nov 26, 2005 (11:40 am)
Replying to: chrisk2 (Nov 11, 2005 7:24 am) Don't worry about the "check engine" light! Do you have coolant filled? Do you have oil filled? Does the car start and get up to speed? If so, don't worry! Those lights were designed to get the average moron into the dealership garage so they can whack you $300 just to analyze the "problem." And then they fix the problem that really didn't exist in the first place for another $800!Trust me, I sold aftermarket auto parts and hung around independent garages (where you should go, by the way)and heard the horror stories!
#10 of 151 Re: 92 Deville Electrical Problem [chrisk2] by 92marondeville Jan 12, 2006 (1:00 pm)
Replying to: chrisk2 (Nov 11, 2005 7:24 am) I had the same problem with my 92 caddy,I changed thee alternater,and after that know problem.
#11 of 151 check engine soon light by sarge2003 Nov 15, 2005 (2:51 pm)
My 1995 Deville has a pinging noise only when accelerating. It has 168,000 miles on it. It is not getting as good of gas mileage as it used to. The check engine soon light came on for about 25 miles then went off. About 400 miles later it came on and has stayed on for 300 miles now. I get code 48. Replies to this message: alcan (Nov 16, 2005 7:25 pm)

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