Question about Cadillac Cars & Trucks

1 Answer

I have a 1991 Cadillac SeVille 4.9 V8. It drives fine most of the time until it warms up in the afternoon. Then it starts to sputter and not want to drive. I have replaced the fuel filter,thermostat

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Cadillac Master
  • 12,466 Answers

Hi Crystal , There are a number of components on you vehicle that can cause this , ignition modules have been known to cause this problem, crankshaft position sensor , MAP sensor , coolant temperature sensor ! Is the check engine light on ? It wouldn't be the fuel because if is plugged hot or cold it's not going to change An a thermostat could cause the vehicle to over heat or not get to normal operating temp. your temp. gauge would show hot or cold ! You should take it to a repair shop , don't guess an just start replacing parts ! that can get expensive .. Making Sense of Engine Sensors

Posted on Apr 10, 2015

Ad

6 Suggested Answers

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

Ad
  • 341 Answers

SOURCE: fuel filter replacement

look over rear end it is by the gas tank .you need to spray the fittings with wd40 or P B blaster it works alot better than wd40 to help loosen the fittings start by pulling fuel relay under hood in fuse box start car this will relive fuel pressure you will need 2-15mm line wrenchs for one end of filter the other you squeeze the fitting and pull out filter

Posted on Nov 08, 2008

  • 341 Answers

SOURCE: NEED LOCATION OF THERMOSTAT IN

  1. Drain the coolant to a level below the thermostat housing.
  2. On some vehicles, access is easier if the front-end beauty panel and the air cleaner are removed.
  3. Remove the 2 bolts securing the thermostat housing to the intake manifold.
  4. Remove the thermostat housing.
  5. Remove the thermostat and O-ring from the housing.
0900c15280090476.jpgThermostat installation—4.6L Engine 0900c15280090477.jpgLoosen the upper radiator hose clamp at the thermostat housing 0900c15280090478.jpgRemove the upper radiator hose clamp from the thermostat housing 0900c15280090479.jpgRemove the thermostat housing retaining bolts and . . . 0900c1528009047a.jpg. . . remove the thermostat housing from the engine 0900c1528009047b.jpgSeparate the thermostat from the housing To install:
  1. Install the thermostat and new O-ring to the housing.
  2. Install the thermostat housing to the intake manifold. Tighten the thermostat housing bolts to 18 ft. lbs. (25 Nm).
  3. Refill the cooling system using a 50/50 mixture of water and ethylene glycol antifreeze.
  4. Install the air cleaner and beauty panel, if removed.
  5. Start the engine and check for coolant leaks. Allow the engine to come to normal operating temperature. Recheck for coolant leaks.

Posted on Nov 27, 2008

Testimonial: "thanks for the great detailed information-greatly appreciated"

TampaNative
  • 778 Answers

SOURCE: 1998 Seville SLS 4.6 Northstar temperature gauge

Sounds like your thermostat may be stuck open. You will be able to look at it and tell upon removal.

Posted on Feb 17, 2009

  • 1 Answer

SOURCE: 1995 Jeep Wrangler 2.5 4cyl spits and sputters while driving

have you considered checking alternator and battery? just a thought

Posted on Apr 01, 2009

  • 534 Answers

SOURCE: HI. MY CADILLAC SEVILLE V8 4.9L '93, STILL

Ensure motor tune or other motor mechanical condition is not the cause of overheating, I assume the motor is actually running hot, - ensure the high gauge reading is not just a gauge sender problem. 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 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.

If none of the above fix your problem, replace the thermostat again - it is not unheard of for a new thermostat to be faulty .

Posted on Sep 04, 2009

Testimonial: "THANK YOU."

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Have a 95 tacoma run normal when cold starts sputtering when warm


Don't know if this will help or not. I had a 1991 Camry that ran fine until it got warm. Would sputter and stall. I cleaned and messed with the throttle body adjustment until it ran OK. Can't remember what I did but there was some sort of adjustment on the throttle body. Good luck.

Jul 08, 2014 | 1995 Toyota Tacoma

1 Answer

Hello I have a 97 Cadillac Seville that I am


Being that there are misfire codes, (300 series P codes), and it's flooding I would put a fuel pressure gauge on it and try to check the injectors and the fuel pressure regulator for leakage. If the vehicle has sat for a while, 1 or more of the injectors may have stuck open. If the fuel pressure is way to high it can cause the pressure regulator to leak. See if that helps.

Oct 29, 2013 | 1997 Cadillac Seville

3 Answers

Replacing spark plug wires on a 1981 cadilac eldarado. I m confuse where the wires go. i need diagram for replacing the wires. Its the 8-6-4 engine


Not sure what you mean by 8-6-4 but this will help you. Pick the correct one for your application:


53d6dfc.gif
GM (Cadillac) 250 (4.1L) V8 .GM (Cadillac) 273 (4.5L) V8 .GM (Oldsmobile) 307 (5.0L) V8 .GM (Oldsmobile) 350 (5.7L) V8 w/EFI.Engine firing order: 1-8-4-3-6-5-7-2 .Distributor rotation: counterclockwise


1cfe6bc.gif
GM (Cadillac) 368, 425, 472, 500 V8.Engine firing order: 1-5-6-3-4-2-7-8.Distributor rotation: clockwise



3f0dea3.gif
GM (Cadillac) 429 V8.Engine firing order: 1-8-7-2-6-5-4-3.Distributor rotation: clockwise

Oct 06, 2009 | 1980 Cadillac Eldorado

1 Answer

1991 cadillac seville will not start


first disconnect the battery and wait ten minutes this will dis able the battery. then get a manual there are several small parts that need to go in a certain way. and for the guy that his car starts then dies sounds like your exhaust system is plugged, simple test disconnect the exhaust just before the catalytic converter and start the engine see it still dies. and the problem isn't even close to the same

Mar 13, 2009 | 1991 Cadillac Seville

1 Answer

My 1991 cadillac seville will not start


Get a new cylinder put old key with chip in it. Find orange wire from old lock cylinder at bottom of steering column just under dash. Disconnect and connect new wire from new lock cyl. Get a copy of the old key for the old lock cylinder {no chip needed} to start car. Hide or mount new lock cylinder hidden under dash. Remove chip key to activate theft system.

Mar 13, 2009 | 1991 Cadillac Seville

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

75 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6924 Answers

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

Answer questions

Manuals & User Guides

Loading...