1991 Cadillac DeVille Logo
m
michael flanigan Posted on Feb 24, 2014

I just want to know how to take the carb off and clean it

Everybody is telling me that my 91 Cadillac deville is running rough because my barb or intake could be stopped up how do I clean it and is it a good idea to take the Cadillac convertor off and straight pipe the muffler

1 Answer

A

Anonymous

You have fuel injection --No Carb

Against Federal Law to remove the Exhaust Converter
Need the converter for the oxygen sensor to control fuel

5 Related Answers

Anonymous

  • 1010 Answers
  • Posted on Jun 26, 2008

SOURCE: 1994 Cadillac DeVille Concourse - Runs rough?

The "check engine" light will "light" when there is a malfunction in the engine management system. The fault code is then stored in the computer. The computer must be scanned to retrieve these stored faults to pinpoint the malfunctioning component. We recommend buying your own scanner and doing it yourself. With a pocket scanner you can check for fault codes to find out why the light came on in the first place. You can clear your cars trouble codes after you replace the malfunctioning sensors.

Ad

Anonymous

  • 59 Answers
  • Posted on Feb 08, 2009

SOURCE: No heat in 91 Cadillac Sedan Deville

I would beleive more that you have build up in the heater core. Try taking loose the heater hoses from the block and use a water hose to spray into one of the hoses letting it come out the other hose then switch hoses with the water hose and keep reverseing for 2/3 times each hose. sounds like stop leak may have been used in a prior time and may be blocking water flow.

Good luck,
Lugnut61

Anonymous

  • 38 Answers
  • Posted on Jul 11, 2009

SOURCE: 92 cadillac deville that will not start.

It sounds like your batery is empty.
Or maybe your start rotor is a bit stuck.
if so give it a hit with a rubber hammer that can help loosen it.

Anonymous

  • 3 Answers
  • Posted on Jul 24, 2009

SOURCE: 1994 cadillac deville concours

On my car, which is the same as yours, it is located on the manifold top back left. Pictures in the book just show it on top.

Kravcar

Mark Carrington

  • 192 Answers
  • Posted on Aug 23, 2009

SOURCE: 96 cadillac deville overheat

Check for coolant flow at the Purge line,this is a common problem on the Northstar.
There is a small diameter hose coming from near the top of the coolant tank,this is the purge line.
With the engine idling,pull the purge line from the tank,if there is no coolant flow from this small hose,it is blocked and this will cause overheating.If the hose is clear, check for blockage at the nipple on the tank.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

E48 - EGR System Problem 91 cadillac deville

EGR systems are prone to trouble, because it recirculates exhaust gases back into the manifold, the EGR valve gums up with carbon from the exhaust gases, if it is the type you can remove, remove the valve it generally can be cleaned with carb cleaner and replaced.
0helpful
1answer

My cadillac deville has a code PO85 on it what does it mean

You just need to clean the throttle body. Take the air duct off and hold the throttle blades wide open (engine off). Spray the throttle bores beneath the blades with carb cleaner and scrub with an old tooth brush. clean the back side of the throttle plate also. The junk and gunk is plugging up the air flow past the blade at closed throttle and the idle speed control is running out of authority to open the blade. It just needs a thorough cleaning. Disconnect the negative battery terminal for 30 seconds when you are done to reset the idle learn offsets.

While you are in there and have the blades of the throttle body wide open....see those two tubes sticking up at you from the floor of the manifold?? Those are the EGR delivery tubes and they are NOT supposed to be full of carbon.... Rod them out with a piece of stiff coat hanger wire and carb spray to get them cleaned out.
0helpful
1answer

Why does my cadillac deville run rough for the first minute or two after starting it up in the morning?

Choke not operating correctly, may try some carb cleaner spray on it to let it work more freely, G/L
0helpful
1answer

Have a 91 cadillac sedan deville left the inside

Security system is active, look in your owners manual to deactivate
0helpful
1answer

Idle on my 1992 cadillac deville is very low

no take that ****** out and give it a bath in carb cleaner 20 mins coat with wd 40 reinstall if its better by a new one any way only a temporary fix dont////dont turn any screws
0helpful
1answer

The car runs rough and seems to want to ''creep'' at stops

it could also be the torque converter lockout soliniod. i would try to unplug it and see if car still acts up, if it doesnt then a soliniod should do the trick,but could be converter also;good luck.i would ask them about this soliniod first.
3helpful
1answer

1990 cadillac deville 4.5l runs rough and missfires. Checked fuel pressure and for vac. leaks, both ok. have replaced plugs, wires, cap, rotor, performed injection service. no results. Hooked to scope and...

Had a computer on my 1990 Cadillac Deville bad, after changing plugs, wires, cap, fuel injectors, egr valve, etc.

The computer was not firing an injector and i had a miss and rough running mostly at 35 mph on the roads. It bucked like a bull.in a rodeo.
2helpful
3answers

My 91 cadillac runs rough just on idle

If by rough you mean it sputters like it's idling too slow, it's most likely the TPS (throttle positioning switch) which controls both the cold and warm idle.
Could also be a MAP sensor. Run the diagnostics test on the car and retrieve the error codes to point you in the right direction. Go to the link below for information on retrieving the self diagnostics on your Caddy. Best of luck.
Greg
http://www.troublecodes.net/cadillac/cadbrom.shtml

Not finding what you are looking for?

86 views

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6988 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...