20 Most Recent 1992 Cadillac DeVille Questions & Answers

Question edited for clarity, spelling of the maker, toss in some CAPS and make sentences. Question moved to model category. Both are Transmission errors E-39 Error https://caddyinfo.ipbhost.com/topic/10886-92-deville-error-code-e39/ and E-98

Diagnostic Code -- E98 Need Help

Cadillac Owners Forum https://www.cadillacforums.com > threads > diagnostic... Nov 9, 2005 - E98 - High RPM P/N to D/R in ISC Range check your tranny. its sometimes called a VCC overstress error. dont change gears until car is totally ... Great, now I have MORE trouble codes!! E91 and E98 Aug 7, 2006 Error codes E22, E32 E52 E98 - Cadillac Owners Forum May 5, 2004 More results from www.cadillacforums.com

Firing order is 1 8 4 3 6 5 7 2. Under the hood, front bank of cylinders, from left to right, 1 3 5 7 The rear bank of cylinders from left to right 2 4 6 8. Odd and even banks. good luck

The conector for the a/c compressor comes with a diode that keeps power from returning after the compressor cycles off. Check or replace the connector/and or diode and see if that fixes the problem

Hello williamcole7: My name is Roger and I will help you. The code 888 is a test code. This tests the L e d's of the dash cluster. All segments must light so you can read all numbers. The 70 code means the system is ready and able to function. The ff code is a current BCM code and is happening at the moment. The f 40 code is a BCM history code and means it was a stored problem or something that has happened. The f 40 code is for a air mix door problem. THe BCM would set this if you had an A/C problem. The E 48 code deals with the EGR system fault. I would check for a vacuum leak at the EGR solenoid. The hose is prone to deterioration do to heat from the engine. Code E52 deal with loss of voltage. A dead battery or a disconnected battery cable will always set this code. None of these codes will keep the car from running.The repair schematics are to extensive to send in a reply. Should you need further help ao assistance I will be glad to help. Please rate the answer. Thank You for using Fix Ya. Roger

Repalcing the starter

I don't quite understand the abbreviation "GSO" however I have a link to how to read error codes from the car on board diagnostics which can be a start for diagnostic mechanic?. https://www.youtube.com/watch?v=x7_llsru9vA

I would wiggle the connector to the light switch it could just be a bad connection likely the master control for all the lighting

is the fan motor working at full speed check for blocked cabin air filter the vacuum only works the vent controls and as you can feel the changes of the vents , it is not vacuum

Not without testing ? Your best bet , take it to a qualified repair shop.

May be the fuel lines or bad distributor

Sounds like you have a either a vacuum leak or a cracked fuel line allowing extra air to be sucked into the carb fuel mixture. Make sure all small to medium sized hoses are well attached to their fittings and do not have any cracks in them.

Jumper 12 volts to the blower motor and see if it runs, it may be a defective motor.

check the brake booster for a vacuum leak under brakes

Hey Alonzo, Sorry to hear this.. I hate when people butcher a NICE vehicle.. I would take it to a local alternator/starter/battery specialty shop.. they will know right away what wire goes where!! If you want to fix this yourself... here are some manuals.. Search from over 10 Million Auto Parts http://www.rockauto.com/en/catalog/cadillac,1992,seville,4.9l+v8,1027730,literature,repair+manual,10335

Next time you have the problem check the fuel pressure, bet you have none. The fuel pump is electric and located in the fuel tank. These fuel pumps last on average about 100,000 miles, less if you run the tank lower than 1/8 due to the overheating it causes the fuel pump due to the loss of lubrication and cooling from the fuel it sits in.

I believe you are correct - the radiator is probably plugged, but you should also check the water pump.