2000 Jeep Grand Cherokee 4.7 Engine stalling

James · 2010-04-22T23:37:45+00:00

I have a 2000 Jeep Grand Cherokee, 4.7 liter engine. 205,000 miles.Engine has been literally perfect until last six months or so.In the last week, engine has stalled three times, at very slow idle, or verylow speed. I have NO problems starting the engine. Today, whiletravelingon the interstate at 70 mph, my engine shuts off entirely, and all of mygaugesgo down to zero. It was as though some one unhooked the battery and thealternator at the same time. I allowed the car to slow down to about 50mphand all of a sudden, the gauges snap back into "normal" positions, and theengine resumesnormal running, and I drive 300 more miles home without mishap, except thatit again stalled twice at very low idle speeds (at red lights).Other than these rather serious quirks, I have good engine performance. Nonoises, etc. I am not a mechanic, but I would have suspected a fuel delivery problemwere it not forthe fact that my gauges went dead, which makes me wonder about the computermoduleor something like that. I have done the ignition switch on and off threetimes in sequence, but I get no error code. Just reads "done" after thethird switch. I hope to get an OBD done asap.Within past six months I had some slow idle stalling and slow crankingproblems. Basedon advice here, I had the throttle body cleaned and the iac cleaned out.That took care of thoseproblems at the time. Again, no problems starting now, just slow idlestalling, and the very weird engine and gauge shutdown at 70 mph (occurredonce).Any commnents or advice will be appreciated. What should I be checking ?James

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ejikoseun 13 years ago

Please you will have to read a lenghty question.I went to where spare parts= is been sold and was given a number to call I called the guy explained my = situation to the guy he too said he has to change the ECU which he did I no= w scanned the car got P1698 P1391 but no P0725 which keep stalling the car = but the car idles roughly.I checked what p1698 means discoverd that has to = do with transmission the guy said we should check TCM fuse discoverd its bl= own replaced it back but car still idles rough so he changed fuel filter ch= anged ignition coils and changed nuzzles car still idles roughly so he open= ed the air cleaner and used injector cleaner to clean what he called thrott= le position sensor and turned the black adjuster on it fit it back car stil= l idles but on acceleration to like 3000 rpm smooths out I complained he sa= id since the car still idles roghly he said he will open the top cylinder t= o check the valves cos if they are not sitting well the car will not idle w= ell.so i told him to hold on drove the car around its more driveable so I s= canned the car, each time I scan it gives me different codes but this are t= he codes p0205,p0123,p0352,p0354,p0357,p0186,p0765,c2459,p0100,p0400,p0048,= p1391 what can you advice cos I suspect the car is driveable because he adj= usted the TPS what can be the effect of the TPS adjustment

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ejikoseun 13 years ago

Please you will have to read a lenghty question.I went to where spare parts= is been sold and was given a number to call I called the guy explained my = situation to the guy he too said he has to change the ECU which he did I no= w scanned the car got P1698 P1391 but no P0725 which keep stalling the car = but the car idles roughly.I checked what p1698 means discoverd that has to = do with transmission the guy said we should check TCM fuse discoverd its bl= own replaced it back but car still idles rough so he changed fuel filter ch= anged ignition coils and changed nuzzles car still idles roughly so he open= ed the air cleaner and used injector cleaner to clean what he called thrott= le position sensor and turned the black adjuster on it fit it back car stil= l idles but on acceleration to like 3000 rpm smooths out I complained he sa= id since the car still idles roghly he said he will open the top cylinder t= o check the valves cos if they are not sitting well the car will not idle w= ell.so i told him to hold on drove the car around its more driveable so I s= canned the car, each time I scan it gives me different codes but this are t= he codes p0205,p0123,p0352,p0354,p0357,p0186,p0765,c2459,p0100,p0400,p0048,= p1391 what can you advice cos I suspect the car is driveable because he adj= usted the TPS what can be the effect of the TPS adjustment

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PeterD 13 years ago

Read and follow DougW's suggestion and find a mechanic who knows what he/she is doing.

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2000 Jeep Grand Cherokee 4.7 Engine stalling

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