Cadillac

Last Edited By Krjb Donovan
Last Updated: Mar 11, 2014 07:59 PM GMT

Question

I have an 86 Cadillac Sedan Deville that was the first car i ever rode in. The Car is in great condition except this last year it just stopped running. I don't have much knowledge about car, however i checked the fuel pump and it is running fine. i think there may be a problem with the fuel injection system or something. do you have any advice on how to fix this or what else might be preventing the car from starting?

Thanks, R.

Answer

Hello,

Unfortunately, you are going to have the car diagnosed at a service center (not a Cadillac dealer), because special diagnostic equipment will be needed to differentiate a fuel delivery problem from a spark problem. The fuel pump could be running, but the fuel filter could be plugged. There are far too many possibilities to guess what the problem is.

Good luck!

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Question

my 1995 cadillac seville will start on starting fluid and will stay runing untill you push in the gas.

Answer

Hello,

If you want to blow that aluminum engine apart literally, starting fluid will do it! Starting fluid is the most misused engine tool ever!

It sounds like you have a fuel delivery issue.

Open the fuel filler door, turn the key on and pit your ear to the filler and see if you hear the fuel pump hum. If not, check both fuse boxes for a blown fuel pump fuse.

You could have a burned up fuel pump in the tank. If you ran it out of gas, you can count on it. Is the fuel filter plugged? If you hear the hum, that is where I would be looking. No matter what, do not use starter fluid in the engine again. Very dangerous!

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Question

i have a 1990 cadillac fleetwood fwd with the 4.5 liter fuel injection. latly i have replaced the injectors with 4.9s. i was told by the shop i went to that my cat was bad and that it was missing. it was dianosied that it was bad fuel injectors. now that i have the 4.9s and i am currently changing the cat, am i in the clear or do i have to replace the ECM and BCM computer? also if i change the ECM and BCM will there be a chance that the computer go bad? also before i put in the injectors the transmission was hitting pretty hard and now its a little smoother.


thank you

Answer

Hi,

I am wondering how your shop determined the cat was bad. If there was a power issue or because of injectors sending too much fuel to it, or what their reasoning was?

As for a guaranty you BCM won't fail, there is no such guaranty. It's electronic as are the hundreds of sensors and wires going to it. Anything can fail at any given time for any given reason. Preemptive replacement of electronic components is not something you want to do unless you just want to waste money


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