20 Most Recent 1992 Cadillac DeVille - Page 3 Questions & Answers

4 cylinder is 1342 and 6 cylinder is 135624

I've seen this problem before. If the fuel pump assembly was bumped in the replacing procedure it's very possible that the fuel gauge sending unit was damaged. Those things are extremely sensitive unlike most GM cars and trucks. Cadillacs are very touchy vehicles to work on unfortunately.

Modulator valves affect the shifting. It will shift but at high RPM's. and it will be a hard shift. The valve is near the back end of the transmission. On the passenger side. It is about 3 inches in diameter and the only thing back there that has a vacuum hose going to it. You may want the vacuum line first.

If you have no problems with any valve or perhaps the heater blower motor then heater core could be plugged, I have back flushed some successfully by changing the flow of coolant backward and catching back flow in a separate container. Could actually see large amounts of coolant stop leak. 1st thing to check, is coolant level full. 2nd , is the blower motor actually blowing, Traveling down the road causes ram air to push through the heater as long as the controls are set for fresh air intake. Remember If allumaseal will not plug a leak then more professional measures must be used. Many radiator stop leaks are so effective like bars leak the stuff that looks like rabbit feed pellets that when used professional help must be found because the radiator no longer has the circulation ability to cool the engine and if a vehicle is run any at all above max operating temperatures it will normally result in costly repairs. I have personally used fine ground black pepper and had good results but it must be very fine ground no matter what is used it must be small enough to travel through the small tubes of the radiator and or heater core. If larger particles are used coolant flow will probably be restricted enough to cause either no heat in the cabin or overheating of the engine which most certainly can cause serious damage the very first time.

It has clips,you will probably have to buy new clips once you get it off, its not easy to get a door panel off w/out breaking some clips.a haynes manual will show you.

There is a sensor that sometimes has to be reset once you install the new brakes. Find it and reset it, (it should just push in).

could be a dirty sensor on the e-brake system

Not sure if you are asking about engine cooling or interior cooling? Can you give me more information.

traction control is governed by the ABS system computer module. So if you are getting indicator on the instrument panel, one or more of the ABS sensors has gone faulty -- replace it once you find out which one it is. But check all the wiring from the ABS sensore first.

The reason you can't get one is that replacement lines are easily built - unless they are very critical or complex, OEM lines cost too much to stock. Remove the old line, take to a auto parts store, get a new length of the correct tubing, the correct fittings and a tubing flare tool and build one yourself. Careful with any bends - you may need a tubing bender as well.

Is the Exhaust Converter 12 to 14 years old & blocked? Is the Oxygen Sensor over 80,000 miles? Spark Plugs over 3 years old? Have you looked at data, to see if you can find a problem? Is it going into Closed Loop, after it warms up, so you have fuel control? Have you checked fuel pressure?

You can usually find it on the Internet, or ask the question on justanswer.com.http://justanswer.com/

I'm not sure what you mean "fuel and stall", but a loose battery conection can cause it to die. As far as fuel - check the fuel filter.

Bad wheel bearings.

Open M.A.P. (manifold air pressure) sensor circuit.

Feel the 2 tubes at the firewall for the heater core. If they are not getting hot, the heater core needs to be flushed out or replaced. I had this problem with a 1990 Cadilac Deville, it was just a plugged up heater core.

Remember to install sealant after flushing out the system to prevent leaks.

Fluid level off

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