Question about 2004 Mercury Mountaineer

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2004 Mercury Mountaineer AWD won't go in reverse. All other gears work. Solenoid pack and PCM replaced about a month and a half ago after OD light and check transmission light came on.

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  • Jonathon JonJon Shepherd

    I had multiple issues with my awd and it turned out to be bad grounding for the wiring harness remove the the grounding wires clean the eyes and mounting surfaces in the engine compartment close to both fuse boxes it might work

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  • Mercury Master
  • 531 Answers

How is the fluid level and condition?

no metal flakes suspended on the fluid?

Posted on Apr 15, 2015

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Posted on Jan 02, 2017

  • 202 Answers

SOURCE: In 97 mercury mountaineer, how to turn off "check engine" light

Go to the local parts store, have them check the codes (they will do this for free usually). It will tell you what sensor needs to be checked/replaced. Once the part is replaced, it will clear on its own. They can also reset the code, but it will come back if the trouble persists.

Posted on May 27, 2009

  • 94 Answers

SOURCE: 2004 Mercury Mountaineer fuel gauge not working

The most likely failure that will cause your problem is the fuel level sender in the gas tank. The sender will cause both the fuel gauge problem and the check engine light to be turned on. The sender will need to be replaced to repair the problem.

Posted on Jun 28, 2009

johnjohn2
  • 5763 Answers

SOURCE: My 2003 Mercury Mountaineer V8 AWD transfer case

the problem is the chain inside strechs, could cause case damage, it will soon break and then truck wont move, depending on how bad it is you may be able to drive a bit more, threres just alot of strain there because of it being awd, if it is noisey it doesnt have to be replaced just fixed,good luck.

Posted on Oct 27, 2009

Testimonial: " Thanks! It does make noise, a clunking sound when I back up and cut the wheel to the left or right. The tires skip also. "

autotherapis
  • 501 Answers

SOURCE: I want 2 change 2004 mercury mountaineer transmission fluid

The best way to change it is to flush it out You can do it yourself, but I do not recommend. A shop that is good like a Monro or Firestone usually charges about 100 bucks to flush and that includes the fluid. If you do it yourself, you will save about 60 dollars, but you risk damage to your radiator.

you will need a hose and an adapter. you back out the lower, or upper cooler line for your trans, whichever is the easiest to get to, (Some trucks have an auxiliary engine oil cooler, but make sure you are flushing the trans lines) put the adapter into the rad where you removed the line, and put a hose from each one down into a bucket. Have about 14 qt's of ford trans fluid ready. Put the funnel into the trans dip stick, and start the engine. pour the qts into the dipstick tube while the old fluid is pumped into the bucket. When you have about two gallons pumped into the bucket shut the engine off and reattach the line into the radiator. start up the engine and check your level. Fill with additional fluid if needed.

note: some say you should drop the pan. two things, you only change half the fluid when you do it that way, and second if you need to change the filter because it is clogged, it is too late for the transmission. The filter is only there to protect the valve body, not keep the fluid clean.

Hope this helps

Posted on Nov 22, 2009

wracefans24
  • 1985 Answers

SOURCE: I have a 2004 Mercury Mountaineer. Sometimes when

you probably should change the transmission fluid and filter with that many miles on it.

Posted on Jan 02, 2010

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I understand all you said

Without the vehicle and a fresh
diagnostic approach, I personally
don't think any internet ideas will help

You still have misfires, that are spiking the PCM &
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Please rate me, thanks!

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