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Cadillac Repair/87 cadillac sedan deville ht 4100

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Expert: - 9/29/2010


Question
QUESTION: Hello,
My Cadillac was running great starts up runs fine with one exception if you press the accelerator too quick it hesitates a minute then it will take off. But i recently tried to sell it and after an hour of sitting it decided not to start. The guy backed out on buying it and now i have to get it running. I went out to the car the next morning and it started right up ran it for about 15 minutes and shut it off it wouldn't start again. About 6 hours later it starts right up runs for 15 minutes i shut it off ad it wont start again. I can fix cars if i know generally what to fix but i'm clueless got any ideas

ANSWER: Hello,

You need to bo more specific. Does the engine turn over? When your yurn the ignition, does the engine crank?

---------- FOLLOW-UP ----------

QUESTION: yes the engine does turn over but will not fire eventually it starts to smell flooded then the battery starts to weaken every few cranks the starter clicks maybe im tryin to fast to turn it over/

Answer
Hi Daniel,

In reality there are so many things that could relate to your problem, without physically being at the car, it is impossible to tell you what could be wrong. I say this with honesty so I don't start guessing in which I suggest you to replace, only to find my guess didn't fix it. The problem you are having is not common.

It could be a fuel delivert issue, an electronic issue or a computer issue.

My suggestion would be to take it to a service center ( not a dealer) and let. Them drive it until it is warm, in which they can replicate the problem with their diagnostic equipment. This way the guess work is taken out and the diagnoses will be accurate.

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Rob Painter

Expertise

Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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