20 Most Recent 1984 Cadillac DeVille Questions & Answers

I have an 84 cadillac coupe deville with the ht410...

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

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

Electric seat is froze and it wont move

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

1 Answer

My fuel gauge isnt working at first it wasnt

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

0 Answers

84 DeVille Limo bad running

1984 Cadillac... | Posted on Mar 08, 2017 | Be the first to answer

1 Answer

My 1984 Cadillac Deville will not start and is not getting fuel to crab what could it be

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

1 Answer

Since the 1984 Cadillac Sedan Deville does not have a port where I can plug in my scanner to it to remove the check engine light does anyone know how to turn it off

Unhook battery or look for fuse to disconnect for 5 minutes

1984 Cadillac... | Answered on Apr 06, 2015

1 Answer

How do I put a fan belt on a 1984 Cadillac Sedan Deville?

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

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

1 Answer

I just baught a 1984 caddilac coupe deville that

Empty the gas tank, fill with good gas.

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

1 Answer

I baught a 1984 caddilac coupe deville that was

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

1 Answer

Tightening sequence and torque

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: