Question about 2004 Jeep Grand Cherokee
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Posted on Jan 02, 2017
SOURCE: 89 chevy 2500 silverado
that was old school , vehicles with the turbo 400 transmission are equipped with an ECM controlled downshift system , when vehicle is at speeds below 70 mph a forced (detent) downshift is possible by fully depressing the accelerator ,when the ECM detects a drop in manifold vacuum (high map sensor reading) the downshift control relay is energized by the ECM , the relay detects battery voltage to the detent solenoid in the transmission to open open an oriface to force the transmission to downshift ..... if yours is not working i would first check the downshift relay , under hood , picture is so bad i can't tell , looks like on the firewall more to the passenger side , next to fuel pump relay , if it needs more diag than that maybe you should get an estimate for repair from a trans shop or such , hope ya fix it , cheers .
Posted on Jan 09, 2009
There isn't one. This car has a "brake and throttle by wire" system and the brake light switch is inside of that. You have a bad brake position sensor. Figure $240 or so at a dealer.
Posted on Jan 15, 2009
SOURCE: 2005 f150 spongy brakes
it sounds like your still not getting all the air out of your lines. it helps to have a brake bleeder but they are expensive, it also could be that the gasket inside the master cylinder is inverted even if it is a new master cylinder this could be the case, ive had four bad remanned ones in a row, before i got a good one... hope i could help
Posted on Mar 24, 2009
Just had the same thing happen to our minivan.......went to the Nissan dealer, since the Villager and the Nissan are the same van, and they actually had the parts in stock. Tell them what is wrong and have them pull up the schematic. You need 2 plastic buttons that push in the holes by the brake pedal. It cost about $10 for the 2 of them.
Posted on Jun 13, 2009
You can adjust the switch by putting your thumbs on either side of the switch plunger and pushing toward the brake lever. The switch shaft will ratchet into the new position which is will then be depressed by the brake lever when it is the brake is not being depressed.
Posted on Jun 23, 2009
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