Question about 1997 Jeep Grand Cherokee
Sometimes it will run fine and sometimes rough. i ran rpms up to 5000 and when it come back down it idled really rough till i taped the gas again it will try to die on or actually die on me while sitting in park and while driving down the road. usually will start back but having more trouble getting it to start when it does die. i know the check engine light works but when the jeep stalls it doesnt come on so auto parts store says they cant check it due to the light not coming on so its not gonna give any codes.
Could be temperature sender,crank sensor,cam sensor and alot of other things. What year and model engine is it? Get it read with scanner anyway. There could be stored or pending codes.some scanners have live data and a service may let you use it hooked up as you drive and when it shuts down they can go thrue scanner and review all data to find the problem.
Posted on May 17, 2017
A stalling problem doesn't have to turn on the check engine light . Try some basic thing's like cleaning the throttle plate (body) air passages for the IAC - idle air control valve . There are videos on youtube , also check for a vacuum leak !
Cleaning Throttle Bodies
Throttle Body Cleaning To Restore Idle Quality
Posted on May 17, 2017
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Posted on Jan 02, 2017
A lot of Rain=Possible Water in the Gas=Erratic Running!
This sounds like it may be as simple as cleaning the water or gunk out of the gas tank which is what I always do 1st because it's easy and inexpensive.
If your fuel is contaminated with gunk, grime, WATER and/or bottom junk like rust this will cause stalling AND ROUGH ACCELERATION!
Try spraying a can of starter fluid in the air intake and see if it runs! If it does, it's most likely bad fuel or clogged injectors so....
Fill the tank with High Test, Add some DRYGAS and a good fuel system cleaner or 2 or 3 and this should dissolve all the gunk and clean the injectors! Read & follow the cans' instruction carefully.
If this cures the problem never let your gas tank get below 1/4 and especially never run it to empty as this is when the gunk and/or water will enter the system!
Hope this helps!
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Posted on Feb 11, 2009
P0505 means the whole Idle Control system, not only the IAM. Check all related sensors (i.e. crankshaft sensor). Check with a voltmeter direct at the connector of the IAM if you get any signal. Remove the IAM from the TB, connect him, let someone switch your ignition key to ON. The IAM need to drive in/out for a short time to find the right position. Hold the IAM near a hard part, that they cant drive out completely! If IAM works fine, check the fuel pressure, check and clean your TB ( if not done yet). If that doesn't work, come back again please
Posted on Oct 27, 2009
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