Question about Mercury Cougar

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I baught a 99 cougar and the next day it was bucking like it was miss fireing. i thought it was the fuel pump but the fuel pump is running. when it bucks the lights go dim a lil bit. sometimes it wont start either. i let it sit for a day and it starts. now it wont start at all. i just replaced two sencors and the aultinater. getting frustrared with it cause it didnt solve the problem

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6ya6ya
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Posted on Jan 02, 2017

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  • 141 Answers

SOURCE: 1989 cougar wont start

Is the inertia switch on the passenger kick panel popped?

Posted on Jan 09, 2009

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mcgyver468
  • 710 Answers

SOURCE: 99 chevy blazer start truck fine then next time go

Fuel pump relay sound bad. Under the hood in the fuse box is the location of the relay. Look under the cover for the diagram to locate it faster. Hope this helps. Please keep me posted. Good luck

Posted on Apr 28, 2009

  • 20 Answers

SOURCE: jeep wrangler bucking

how long has this been happing..one tank of fuel or more, could have been bad gas, replace filter,, put gas dryier in fuel tank..if it continues could possibly be transmission related..the reving down doesn't sound like transmission though if tansmission was slipping it would rev up..good luck

Posted on Jun 02, 2009

  • 8 Answers

SOURCE: BUCKING AT HIGHWAY SPEED AND THEN STALL

the tps works in conjunction with the pcm . the you try hooking it up tp the computer again.

Posted on Oct 13, 2009

  • 10 Answers

SOURCE: 99 chevy venture

check to see if all doors are shut tight,the same thing was happening to me,and it was the very back door that was the problem

Posted on Dec 14, 2010

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1 Answer

No fire all the time


Fire--means what?

You have a NO START Condition-- most of the time

Your going to have to do some testing

What are you missing?
Spark or Fuel -when it won't start

I would put my money on a failed fuel pump
Check the fuel pressure

Mar 10, 2014 | 1995 Lincoln Town Car

1 Answer

No firing coming through the coil and fuel pump is not working both are related


It suggest checking the fuse and relay to the fuel pump. You might consider changing the coil. on a 6 cyl 4.0 or 4.7 the replacement part at PEP Boys should be E 239 BDW. About $130.00 bucks. Good luck Vicky.

Mar 10, 2013 | 1993 Jeep Grand Cherokee

1 Answer

My fuel pump on my 99 cougar v6 only runs for a half second then shuts off I've replaced the filter , the pressure regulator valve , the pump and it still does the same thing . could I have a ecm prob


Generally, the computer only runs the pump long enough to start the engine and build oil pressure. After that, the oil pressure switch keeps the pump on, most of the time by supplying a ground to the fuel pump relay. This is a built in safety thing, when the engine isn't running, the fuel pump shuts off. Most public libraries have Chilton's manuals, or you could pick up a Hayne's manual at a store like Autozone. These books can help you locate the relay and oil pressure switch, as well as provide wire colors for your specific vehicle.

Nov 13, 2011 | Cars & Trucks

1 Answer

The fuel pump on my 99 cougar v6 only runs for half a second the shuts off. I replaced the filter the regulator valve and the pump and it still does the same thing?


What are your symptoms? The fuel pump will shut off immediately when the pressure is up to normal.If the car isn't running,this can take one second or less.
Please describe the car's troubles to us in detail? don-ohio (:^)

Nov 13, 2011 | 1999 Mercury Cougar

2 Answers

1999 mercury cougar. won't start...cranks...battery ok.


V6 ? 4CYL? Have you verified SPARK? Did anyone check the "fuel pump inertia switch?" Its in the right front kick panel. If it was a "Anti-theft Issue" the light would be on or flashing.

Nov 03, 2009 | 1999 Mercury Cougar

1 Answer

2001 Xterra - Replaced fuel pump twice and is still not running.


I am no expert, but I just had a similar problem. The car would shake and buck when accelerating. It finally just died and would not start. After sitting for some time, the car would start and run a while, then do the same thing. I thought fuel pump. The dealer diagnosed distributor. After replacing, the car is running perfect. Something to think about. Good luck.

Mar 13, 2009 | 2001 Nissan Xterra

1 Answer

'99 Cougar Will not start


check the fuel pump relay and try to hear if you can hear anything coming from the fuel pump and also check the fuse for the sending unit.

Feb 16, 2009 | 2000 Mercury Cougar

1 Answer

Car will crank but will not start up and run


Try fuses, fuel lines might be clogged, crimped.

Jan 02, 2009 | 1991 Eagle Talon

1 Answer

1991 Volvo 240 bucks like a bronco and doesn't want to start.


I had the same problem w/ my 1979 242 GT.....Try looking at the fuel pump inside the gas tank (go in from the top under the mat in the trunk).....I had a broken hose that was connecting the fuel line from the in-tank fuel pump....or try cleaning or replacing the filter sock located there too & make sure the filter sock is at its proper height ! and check on the fuel pump itself....My bucking problem was more noticeable when the fuel level was low.

Dec 15, 2008 | 1991 Volvo 240

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