Question about 1997 Jeep Grand Cherokee

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My jeeps rpms drop and then it acts like it wants to die would this be the crank senser

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Problem could be faulty idle air control valve, stopped up fuel filter or weak fuel pump, the crank shaft sensor causes no start problems.

Posted on Apr 09, 2011

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Hello and welcome to FixYa!
It can be the crank sensor but I strongly suggest that you have the MAF (mass air flow) sensor checked. There's a big possiblity that it's the MAF sensor for if it's faulty, the idle becomes erratic and may cause stalling.

Hope this helps and thank you for using Fixya! Have a good one!

Posted on Apr 09, 2011

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it will if you do not follow the simple steps first
have the fault codes read instead of guessing
next what you describes indicate 2 major fault areas
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99 jeep cherokee after sitting 6or10 hours or more.starts fine,i here the fuelpump working.within the first few miles it just dies i have to crank it a bit but it starts back up and so far keeps running...


If its warmed up it runs OK? The coolant temperture senser may be lying and saying the motor is warm when it's not. If the check engine light is on it may be indicating that or some other equally damaging problem. Most auto parts stores will connect to your Jeep and tell you what the codes are for no charge. Some stores may even reset the light for you. The coolant senser can lye and not turn the light on. A true scanner( not a code reader. can tell the values of the sensers as the Jeep runs. f the car is cold and the scanner says it's 180 degrees coolant you have found the problem. A wrong senser that has turned the cheak engine light on can have the computer sub a good value for a warmed up car so the car will still run, but not nessaryly the best till the check engine light is investagated and repairs are made

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Could be a sensor.I'm thinking more along the lines of a fuel pump or fuel filter.If the fuel pump is going bad..similar symptoms.Would be advisable to install a pressure gauge at the engine,and check fuel pressure when it's acting up.

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