Question about 2001 Jeep Grand Cherokee
Engine shutting off sudently during runs
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Posted on Jan 02, 2017
the tps could cause the pcm to think the throttle is open further than it really is, adjusting injector pulsewidth to compensate. but. the 02 would see the rich condition, the idle would suffer and the idle air controller would open to compensate. all technical discussion aside, you need to check the 02 sensors output voltage while running. backprobe the output and make sure you're not getting over 1 volt and that it dances from about 200mV to 800mV at a high enough rate that your DVOM has a hard time keeping up with it. If you get a steady voltage, chances are the 02 sensor is shorted inside to either the ref. B+ or the heater B+. If it's not switching and the voltage is high, unplug it and check for voltage in the signal wire of the harness. could be a wiring issue before the 02 as well.
Posted on May 14, 2008
The egr valve is located on the front of the right cylinder head. It has a tube attached to it and going to the intake manifold.It has failed and is why your jeep is running rough and hesitating. Replace it and it will fix your driveabllity issues. Disconnect the battery for 2 min to clear the code.
Posted on Apr 02, 2009
left rear of engine block,on transmission bell housing.best way from top under brake booster use a wrench,
Posted on Jun 13, 2009
it is located at the back of the engine on top of the transmission bell housing,the plug runs over to the passenger side of the engine bay and it comes out from behind the engine,you can actually get your hand on the sensor itself from under the hood on the drivers side,and i believe its a 13mm bolt holding it in,the new sensor will have a sticker on the end of it...leave it there,it is used for correct spacing between the sensor and the flywheel,hope this helps
Posted on Sep 23, 2009
Testimonial: "Everything was just like you said but as a not atleast for my jeep it is an 11mm not 13mm. Works great so far (keep fingers crossed) "
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