Question about 1999 Cadillac DeVille

1 Answer

99 Deville...has slight hestiation upon acceleration..told it could be a vaccumm leak..not sure...was wanting some help

Posted by Anonymous on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 82 Answers

A leak such as that meaning the fuel pump where as the fuel pump on your vehicle, is/should be battery operated, I would check to see IF timing is off a percentage, also take the fuel line off the carb. have someone turn the engine over you hold the line in a container to check it out...also we have found simple things like the floor mat under the accelerator was bunched up...??

Posted on Jul 16, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

My 1991 Cadillac Deville is running like its miss firing or running outa gas


Check for vaccumm leaks and when was the last time you changed your fuel filter. also fuel sending pump in gas tank could be going bad.
Good Luck

Oct 04, 2013 | 1987 Cadillac DeVille

1 Answer

1990 Cadillac deville was running fine today, then after a long drive uphill it began to vibrate/shudder when accelerating from stop or low speed if gas applied strongly. No problem at high speed, just...


I would check the fuel pressure, sounds like a fuel delivery problem...possible dirty fuel filter. The vibration is probably due to a missfire. Have you had had a tune up lately? Check for vacuum leaks. I hope this helps.

Jul 21, 2011 | Cadillac DeVille Cars & Trucks

1 Answer

I HAVE A 91 SEDAN DEVILLE.4.9 PORT FUEL INJECTION V8. I HAVE PLENTY OF ACCELERATION FROM STOP TO 20-30MPH. BUT WHEN I AM AT ANY CRUISE SPEED AND STEP ON THE ACCELERATOR IT HESITATES AND DOES NOT...


Sounds like a malfunctioning egr system. Too much egr gasses at once will lean out the air fuel mixture and cause hesitation in an engine. Just my 2 cents.

Jan 20, 2011 | 1991 Cadillac DeVille

1 Answer

Slight hestiation upon acceleration


I would replace the fuel filter, if it hasn't been done. Also check the air filter and check to see if the throttle body is dirty.

Jun 10, 2010 | 1999 Cadillac DeVille

1 Answer

Took my car to a parts store and was told i had a vaccumm leak so now i need a diagram to find the leak


I am assuming they scanned the codes and pulled the code associated with the check engine light? And this is what told them you had a vacuum leak? Is the vacuum leak associated with any type of system like your ac isnt working properly or something or the car is running poorly? You can inspect most of your vacuum hoses without a diagram and you can use a mighty vac to test them to make sure they are good. Just visually inspect them and look for cracked and damaged hoses and replace them.

Apr 08, 2010 | 1997 Chevrolet Cavalier

1 Answer

Sputters when accelerating


it could be a number of things.....check your plugs and wires first....then fuel filter nd fuel pump make sure thats right nd if all that right then it prob a vaccumm leak

Mar 17, 2010 | 1994 Buick Skylark

1 Answer

My 99 cadillac deville ran hot about 8 months ago i took it to the dealer thay told me that i need a new engine and to drive it for a couple days and see what happen i have been driving it for eight months...


If you have no obvious external coolant leaks then the most likely culprits would be leaking head gaskets or warped heads. I would take the car to an engine rebuilding shop and get a second opinion to the dealer, not to say that they are wrong, but your engine may be salvageable at a cheaper cost and those guys would be better positioned to tell you that. Hope this helps.

Oct 06, 2009 | 1999 Cadillac DeVille

3 Answers

99 deville head gasket leak?


A head gasket leak is usually indicated (among other things) by continous overheating of the motor, and subsequent loss of coolant.
It can also be indicated by the presence of engine combustion gas bubbles in the coolant resevoir.
Ensure the coolant system has no external leaks, such as faulty hose/s, radiator etc.

Ensure motor tune or other motor mechanical condition is not the cause of overheating.
I assume the motor is actually running hot.

Check cooling fans are operating ok (as necessary when car warms up):- if not check
1) fuse,
2) relay operation,
3) heat sensor switch.

Check/replace the thermostat,
Check the coolant pressure cap is serviceable & of correct rating,
Ensure cooling system is correctly filled, bleed off any airlocks as necessary when re-filling,
Ensure radiator hose on suction side of waterpump is not collapsing at engine revs above idle (due softening),
If the motor has been severely overheated, the head gasket could be blown - look for combustion gas bubbles in the coolant resevoir.

Sep 21, 2009 | 1999 Cadillac DeVille

1 Answer

2000 Cougar stalling/lunging fwd. upon acceleration


sounds like your transmission. if the fluid is red or in your case, a really dark red almost brown, then it is your transmission. you might be able to catch it in time to have the leak fixed and save the transmission.

Jun 19, 2009 | 1999 Mercury Cougar

3 Answers

2000 mazda mpv


Have you had a compression test to see if the head gasket is leaking?

Jul 08, 2008 | 2000 Mazda MPV

Not finding what you are looking for?
1999 Cadillac DeVille Logo

Related Topics:

61 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8202 Answers

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

Answer questions

Manuals & User Guides

Loading...