Question about 1999 Mercury Cougar
Try a crankshaft sensor. Besides firing ques, this part regulates fuel pump pressure. It is losing track of the RPM.
Posted on Oct 19, 2013
Egr valve either has low vaccum or is bad
Posted on Oct 16, 2013
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Posted on Jan 02, 2017
To remove the alternator, you have to remove the serpentine belt. They have a tensioner in which you place a socket wrench and pull on it and it loosens the belt. Before removing the belt notice how it is routed. Some vehicles have a diagram on the hood or on the front near the grill.You take the belt off. Then you remove the alternator by removing the bolts attaching the alternator to the engine. There are two or three bolts you have to remove. Two of them are fairly big bolts. About a size 14 metric or so. Disconnect the negative battery cable battery so you won't hit any grounds.Then take off the plugs from the alternator and the small nuts that hold the wires. Notice how they are placed before removing so you can know where each plug goes.Then replace the new alternator. Plug it back up and install the same way you took it out.Replace the belt starting from the left to right and pull on the tensioner and reinstall.
Posted on Jan 11, 2009
i had to do this to my wifes 99 cougar. if you're not a lil car savvy, then your best bet is take it to a mechanic. I found the instructions, on autozones website. 1st you gotta take off front passenger tire, remove the whole assembly including the half shaft. (this car is really a pain to work on) Thats not even all of it, thats just to see the alternator from underneath. I got everything except that damn last bolt holding the alternator in, so i had to put it back together, get it towed to a friends shop and let him finish it for me. So far I hate working on this car, if its not something above the motor, then its a pain cuz they decided to put that big *** 2.5 motor in the small *** car!! But if you really want to do it yourself, I recommend autozone, they have detailed info on how to do it, plus some tools, you need to rent if you don't have em already!! Good luck, you'll definately need it!!
Posted on May 23, 2009
Had the same problem, car was misfiring on cylinder 3 and 4. replaced wires, plugs, and ignition coil. still misfired on the same cynlinders. turned out the main engine wiring harness plug in was coming loose. spent well over $150 on the unneccesary repairs and ultimately fixed the problem wit a $3 bag of wire ties to hold the plug in...
Posted on Jun 01, 2009
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.
Posted on Nov 03, 2009
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