Question about 1994 Mercury Cougar

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94 mercury cougar taken to have smog test done. technician said excessive shaking during high rpms caused smog machine to abort smog test. he said excessive shaking in rear. dont shake while driving. what could be causing this

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  • 3 Answers

Motor mount might be bad or unblanced tires!

Posted on Apr 18, 2013

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Posted on Jan 02, 2017

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SOURCE: 99 mercury cougar

Rotten egg smell??? Thats smell could be either from a bad 02 senser or a totally clogged catalytic converter...not terribly expensive to replace. As far as the engine shaking, and it not going quick out of the stop light, I'd pull my tranny dipstick and smell the fluid and check for a buring smell and or the color. You want it to be a light red color. You may have an internal transmission issue. You said you got "fluild" out of your tailpipe, was it just water, or was did it have a scent to it. You really should have the car checked out, with those symptoms that you listed you could do more damage by still driving it that way.

Posted on Mar 26, 2009

  • 14036 Answers

SOURCE: High engine idle 94 Mercury Cougar

replace throttle body gasket. first check to see if carbon has built up around the throttle valves in throttle body if so remove and clean it with throttle body cleaner.and a old tooth brush. besure to remove all electrical components or any thing that plastic or rubber the cleaner will destroy it.

Posted on May 18, 2009

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SOURCE: why is the abs fuse keep blowing in 1999 mercury cougar?

You will need to optain a wire schematics for the abs system and related parts. The fuse is blowing because there is an obvious short circuit in the system. The wire schematics will help you trace the shorted power wire thats giving you problems. Repair wire as nesessary. (Replace damaged section of wire) Replace fuse.

Posted on Jul 23, 2009

  • 708 Answers

SOURCE: Why does my 99 mercury cougar shake when i come to

tires could need balanced. However, my past experience says its because your rotors are warped. They need to be machined smooth again. Doing this requires new brake pads as well. Should just be the front causing the problem

Posted on Oct 01, 2009

warlock61
  • 659 Answers

SOURCE: HI, WHEN I DRIVING 40-50MPH MY whole CAR IT

it is torque converter shudder try changing the trans fluid including draining the converter and add friction additive

Posted on Oct 31, 2009

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1 Answer

Rear shaking during smog test


Out of balance tires or a bent rim.

Apr 18, 2013 | 1994 Mercury Cougar

1 Answer

When pulling away the rpms run up to 3000 before shifting up


dude i have the same exact issue . have you learned anything new since the post ? i changed the maf sensor and it did nothing

Jun 23, 2010 | 1999 Mercury Cougar

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HI, WHEN I DRIVING 40-50MPH MY whole CAR IT SHAKES, FEELS LIKE IF THE PAVEMENT HAD MANY LITTLE ROCKS. SOUNDS LIKE "RRRRRRRRR". MERCURY COUGAR V8 4.6L 94.


it is torque converter shudder try changing the trans fluid including draining the converter and add friction additive

Oct 22, 2009 | 1994 Mercury Cougar

2 Answers

Why does my 99 mercury cougar shake when i come to a complete stop and accelerate over 55mph.


tires could need balanced. However, my past experience says its because your rotors are warped. They need to be machined smooth again. Doing this requires new brake pads as well. Should just be the front causing the problem

Oct 01, 2009 | 1999 Mercury Cougar

1 Answer

Could a p1443 cause a ideal problem With a 1997 cougar xr7 it will go 50 mph up hill with no gas pedel


no. but a ticking IAC valve could, also if the iac driver in the pcm were bad it could cause the rpms t be too high as well

Aug 29, 2009 | 1997 Mercury Cougar XR7

1 Answer

Fault codes ''failed smog check''


http://www.bba-reman.com/content.aspx?content=Ford%20P%20Powertrain%20Diagnostic%20Fault%20Codes


from experience the system is to lean not getting enough gas which causes lost of power pinging rough idoling and it clogs your fuel injectors which will cause failed smog test good luck

Jul 07, 2009 | 1999 Mercury Cougar

1 Answer

Mercury xr7 starts then starts coughing and chocking like not


My cougar does the same, it starts and then about 1 minute later (or so) the check engine light comes on and the car idles really high, with black smoke out the exhaust. It stays in second gear i think and it will not shift out of it. Max speed is 40 mph with the rpms screaming, it will go off after a long time but this is agrivating. I have a 94 mercury cougar xr7 3.8 ltr Any help please?

Jun 22, 2009 | 1994 Mercury Cougar

1 Answer

High engine idle 94 Mercury Cougar


replace throttle body gasket. first check to see if carbon has built up around the throttle valves in throttle body if so remove and clean it with throttle body cleaner.and a old tooth brush. besure to remove all electrical components or any thing that plastic or rubber the cleaner will destroy it.

May 18, 2009 | 1994 Mercury Cougar

1 Answer

97 Cougar XR7 V6 shaking in steering wheel and body.


Have you a had a 4 wheel alignment done?If all four wheels aren't set to a comman center line it cause it to shake,a warped brake rotor could cause this also.

Apr 14, 2009 | 1997 Mercury Cougar XR7

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