1991 Cougar 5.0 low power. - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Mercury Cougar Forum
Register Home Forum Active Topics Photo Gallery Auto Loans Insurance Garage Mark Forums Read Auto Escrow

Mercury Cougar Forum Forum for discussion of the Mercury Cougar.

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 12-28-2008, 08:16   #1 (permalink)
Registered User
Join Date: Sep 2008
Posts: 1
1991 Cougar 5.0 low power.

Hello everyone. Im having a problem with my wifes DD. 1991 5.0 Cougar. Last week it developed a low power problem. Came on suddenly. Car will not accelerate from a stop. Have to put your foot to the floor to get her moving. Once shes rolling and comes out of first gear she's not to bad but still down on power. Trans is not slipping, holds at full throttle and even on wet grass this thing wont break the tires loose. Feels like its starting a gear or two high. I have checked the air filter, MAF, the fuel pump and regulator are new, the engine runs fine with out a load on it, I checked the codes and got four codes. 157 and 158 for the MAF high and low, probably occured when i unplugged the MAF with it running. 332, egr valve but its had that code for a long time, and a PIP fault. I checked the distributor shaft and while its all intact it does seam to have some play. couild it have jumped a tooth on the cam and be out of time? I also plan to check the TPS and the coolant temp Sensor. A friend suggested plugged cats but it came on suddenly like a part failed not gradual so im thinking probably not. Its a 3 speed with OD automatic, did they have lockup converters and could it be stuck locked?? At this point i just need some other ideas of possible problems to check. Thanks in advance for your help....Shawn
woodzracer is offline   Reply With Quote
Sponsored Links
Old 12-29-2008, 08:49   #2 (permalink)
T-bird Circle Track Racer
Join Date: Jul 2005
Location: Western New York
Age: 49
Posts: 21
Re: 1991 Cougar 5.0 low power.


You should post this at:TCCoA.com - Thunderbird & Cougar Club of America
Thunderbird & Cougar car Club of America
This club specializes in 89 to 97 Thunderbirds & Cougars

Paul tbirdtess
1990 Thunderbird Factory stock Circle Track Car #12
351W C4 3.90 open gear.
See my car at:www.tessier-racing.com
tbirdtess is offline   Reply With Quote
Old 01-01-2009, 22:40   #3 (permalink)
Registered User
thundercougar's Avatar
Join Date: Dec 2008
Location: St.Louis
Posts: 87
Re: 1991 Cougar 5.0 low power.

I had a 1990 Cougar and i could barely get the thing past 20mp but when i did it was better slightly.Turned out to be a broken disc pad that got stuck between the rotor and calipar.Thing was it didnt shake or have stopping issuse.Sometimes its not even engine problems.Just a suggestion.Also when flooring it does your R.P.M's go up and/or you hear a clunk when you finally do get it engaged?

Last edited by thundercougar; 01-01-2009 at 22:46. Reason: left things out
thundercougar is offline   Reply With Quote
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Cars and PAG Vehicles > Mercury Cougar Forum

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 18:40.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.