20 Most Recent 1984 Cadillac DeVille Questions & Answers

run the fault codes and check for a problem reverse servo/solenoid

1984 Cadillac... | Answered on Oct 17, 2017

The only way I know to do this is to pull the seat and see what's wrong (the gears may be jammed, the motor burned out, etc.). Wiring diagrams are available at Alldatadiy.com

1984 Cadillac... | Answered on Aug 03, 2017

Always check that all frame ground and body ground wires are clean and well connected. Sounds to me like whoever replaced your fuel sending unit did not connect a ground to it very well. A single bad ground can make an electrical system backfeed and cause a lot of things to go haywire. I've seen this happen many times and re-connecting the ground wire after a good cleaning fixes it well.

1984 Cadillac... | Answered on Jul 13, 2017

Bad fuel pump, leak between tank and pump, clogged filter, broken timing chain thus not turning cam thus not activating fuel pump.

1984 Cadillac... | Answered on May 17, 2015

Check YouTube and search their titles.....lots of info there!

1984 Cadillac... | Answered on Jan 19, 2015

Empty the gas tank, fill with good gas.

1984 Cadillac... | Answered on Aug 29, 2014

check your timing. Cadillac use to use a plastic timing gear that would easily strip. Replace it with an aftermarket gear made of metal and you won't have problems for a long time. Why they used a plastic timing gear is the stupidest thing I have ever heard of and when I found that out I vowed to never buy a cadillac again.

1984 Cadillac... | Answered on Aug 29, 2014

It depends on the Engine you have. According to Chilton's Repair manual - a 8 cylinder 250 (4.1) needs to be tightened to 45 ft. lbs, then to 90 ft. lbs. A 350( 5.7) to45 ft. lbs. then to 85 ft. lbs.
The sequence for a 350 is:

1984 Cadillac... | Answered on Aug 23, 2014

-Should be 12 volts same as other cars.

Good luck


1984 Cadillac... | Answered on May 16, 2014

1984 Cadillac Full Size Cadillac RWD
4.1 liter V-841894029.gif

1984 Cadillac... | Answered on Aug 09, 2013

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