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Lumpy 97 grand cherokee motor runs fine on LPG but on petrol its a bit lumpy when but into drive, while on tickover its ok

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2 Answers

Hi. I have a 1993 JEEP Cherokee Sport that


not sure here well to be totally honest i have no idea other than a thought and thats maybe it has an air leak on the inlet manifold so its a bit weak ,but i have similar problems with these cars here in spain on the few petrol ones i have seen as most are diesel but i have one customer with a petrol/LPG gas one and nothing but problems like this but on LPG its perfect and i do not know the answer but it seems these early models do suffer from this

Mar 09, 2011 | 1993 Jeep Cherokee Country

1 Answer

3.1 grand cherokee jeep 2001 td ltd boiling over chandged rad ,stat ,pump seems ok any ideas .ok on tickover with pressure cap on or of but when driving for about 30min car boils over and water light comes...


Check out the fan, maybe is not working, about 1 year ago same happened to me, changed many parts but keep getting hot and finally found that the fan had a short circuit and sometimes didnt work.

There is a connector between the fan motor and the fuse box eliminate the connector instead directly join wire to wire

Oct 17, 2010 | 2001 Jeep Grand Cherokee

1 Answer

I want to put the motor from a 97 or 98 grand cherokee into a 94 the has a piston issue can this be done please say yes


If you mean the monster 4 litre petrol engine then yes because i have changed one as they are all the same block but you will ahve to sort the later to earlier ignition system but not a problem but use the parts off the old one,fitted a diesel into one as well for a car dealer as the petrol ones here are worthless pieces of junk,but a diesel with a manual box ?? around 5000 euros but a petrol with no LPG gas conversion even in good condition you might be lucky to get 500 euros ,scrap man will give you 50/100 euros .Highest value vehicles here when old are merc diesels or a peugeot /citreon/renault diesel cars ,petrol you cannot give them away least off all a 4litre gas guzzler with a auto box

Jul 12, 2010 | Cars & Trucks

1 Answer

97 jeep grand cherokee, strange pop\clunk sound


Check the front stabilizer bar and the bushings on it. It is located under the radiator with arms that bend back to each front tire.

Jan 11, 2010 | 1997 Jeep Grand Cherokee

1 Answer

I have a mitsubishi l200 which runs very 'lumpy' on tickover but is fine when driving along. Any idea what this could be?


Look for a vacuum leak on the motor intake system, such as perished hose, loose inlet manifold or air intake fitting.
Check operation of the PCV valve and associated hoses.

Jul 09, 2009 | Mitsubishi Pickup Cars & Trucks

2 Answers

VTEC 1.8 135K. Starts OK but feels lumpy from cold - almost like its not firing on all four. Once it warms up a bit the tickover when stationary drops to virtually zero (sometimes stalls), once fully warm...


1. My suspicion is your electronic ignition
2. If your car is a bit old, there might be a leak through your valves
3. Distributor timing gear is damaged (replace)

Nov 06, 2008 | 1997 Honda Accord

1 Answer

LPG not working?


You will have to recheck that all the wires were reinstaled.The noise is the fuel pump.The lpg system has its own fuses so you will have to check them also.The only thing you touched was the battery so the problem is there somewhere..Earth wire is also important just double check all the things you undid.Let me know how you go

Jul 30, 2008 | 1996 Jeep Grand Cherokee

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