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Mercury Cougar, Engine, Coupe
#133 of 156 2000 Mercury Cougar Bucking
Jul 15, 2011 (9:27 am)
I have a 2000 Mercury cougar V6 2.5, Upon starting the car and backing out I give the car gas and it putters a little then gets up to speed, when it hits about 20 it bucks a couple times, If hold on to the gas it gets worse if I take my foot off and replace it it seems to get better, but it takes forever to get up to speed. When it finally hits about 40 it does the same thing, about every 20MPH.. when steady on interstate it is fine, unless I give it gas to go about 5 more MPH it bucks again. The code at autozone read misfire on 4 and 6.. Ive read all over and people are saying it's either just a tune up, or the neutral saftey switch.. I can't make up my mind on which it is and I don't want to do both right now, So im asking if anyone knew which one it is for sure? Thanks
Jul 15, 2011 (5:41 pm)
Aug 16, 2011 (8:40 pm)
Hey man I have the same car. I can probably help you with any problems you are having.
I just swapped the engine myself a few weeks ago and got some misfire problems also.
If you do the following you'll definitely eliminate the problem you are having right now.
Fuel Injectors (remove your fuel rail and inspect the injectors for leaks)
remove each injector from the rail, clean it and the rail itself, scramble the order of the injectors and re install them each into the rail)
Fuel Injector connectors remove the connectors formt the injectors, clean them with no residue electronics cleaner and reinstall...use dielectric grease on the contact when u reinstall.
Get NGK TRG55K sparkplugs - they are the platinum ones
install them and put dielectric grease on the wire connector, sparkplug ceramic and the connector that the wire goes on
Upper Intake Manifold Gasket take it off, clean it with rubbing alcohol, get hi temp silicone from your local parts shop and put it on the gasket then reseat the gasket to the Upper intake Manifold...
Throttle Body Cleaner
follow the instructions on the bottle. When I had my Upper Intake off the car, i just sprayed carb cleaner inside of it ,,,,scrubbed it best i could and sprayed the heck out of the throttle body opening with the cleaner
After doing these if you still get a misfire change your coil pack you can get a new one from rockauto.com or goto a local auto wrecking yard and pull one from another cougar.
reinstall everything back together....these few tasks should take anyone with basic mechanical know how about 3 hours or less to complete and I pretty much guarantee your problem will disappear. Good luck feel free to write me with any questions etc.
#136 of 156 Re: 2000 Mercury Cougar Bucking [jvoelke]
Sep 09, 2011 (4:03 am)
change the fuel rail pressure sensor. also take it into the shop and they have a code sensor that tells you what is wrong with it. i have the same car did the same thing changed it and it does not do that anymore all i have to do now is get another sensor because of something else and i am all done. dont listen to the guy below that is way to much work. any further questions just ask.
you can get the part at any ford dealer.
#138 of 156 2000 Mercury Cougar stalls
Nov 03, 2009 (4:47 pm)
My 2000 Mercury Cougar has been stalling (especially in the morning after a few kms) and car dealership or garage do not know why. It usually happens in the morning and weather does not seem to influence the pattern. It has also happened in the afternoon when I was turning from the highway (80 km) to a side road. I was able to get on the side road but had no more power steering. Just before it stalls, I can hear a very loud sound and the rpm goes down (it is around 1.5 and the needle goes down). It stalls especially when I am at a red light or stop. This problem is intermittent and never seems to happen when the car is in the garage. Does anyone have an answer?
#139 of 156 2000 Mercury Cougar stalling
Dec 16, 2009 (10:10 am)
My car seems to have stalled out. I will turn it on to heat up in the morning and go inside and then when i come back out it isnt on. When it does this the brakes go out on it and I lose all steering. My RPMS drop below one unless I keep my foot on the gas. My heat wont work and my lights flash. What could this be?? I am about to have a baby and very frustrated with my car... kinda scares me to drive it and it is makin me mad!!!
#140 of 156 1999 Cougar Alternator problem???
Nov 01, 2011 (2:25 pm)
I have had my Cougar for about 4 yrs. Just before we bought it the previous owner replaced the alternator. about 1 1/2 yrs later the alternator went out and I took it to a starter/alternator place and had it rebuilt which lasted about a yr. Took it to a different starter/alternator place and the car ran great except the battery light would flicker at about 5500 RPM+ but the mechanic couldn't find any problems. It lasted about 1 1/2 yrs and went out again. Took it back to last starter/alternator mechanic (who only charged me labor) to fix it. Still not fixed since the light starts to flicker at various RMP' s now. Any suggestions??? I have about had it with this ongoing problem... thanks
#141 of 156 Re: 99 Cougar no spark [icanfixitnat]
Nov 16, 2011 (1:08 pm)
Did u fix your problem? I have exact same situation and dont know is it the PCM or the factory alarm or what else could be. Let me know please. Thank you
#142 of 156 Multiple problems
Nov 29, 2011 (7:14 pm)
I have a 200o Mercury Cougar special edition and I am having so many problems. The first problem is that the gas gauge sometimes work but the majority of the time it doesn't can anybody tell me what's going on with that. Then the second problem is that the car jerks a lot when your going over 5o. Lastly today of all days the car just shut off without any notice and will not start at all. Tried cranking it several times but nothing happened. All the lights come on so there is nothing wrong with the battery can somebody answer any of these questions I would be grateful. Thanks in advance.