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#4560 of 5143 Jeep Grand Cherokee 4.0L petrol straight 6 - HELP
Oct 02, 2009 (1:05 am)
Ok, I need some serious help!!
I have a 2003 Jeep Grand Cherokee 4.0L petrol straight 6, now I have been suffering with a loud tapping noise that I would normally say is the tappets, but this only happens when the engine is cold then gets louder then just stops when the engine warms up, the tapping does not fade away, it just stops dead!! like a switch has turned on! got to add that you do not hear this when you 1st start up, only after a few seconds (10-15) the tapping starts.
But also when the engine is warm, you can hear this tapping (not as loud) in cycles, see if i can put this in to words!! the tapping starts off softly then builds in loudness, then just stops, again like a switch has tripped, then it does this again and again!!
Have had this checked by Chrysler - !!!! no help yet!!
Can anyone HELP!
#4561 of 5143 1999 Jeep Grand Cherokee...Sluggish/Shifting Rough
Oct 02, 2009 (6:08 am)
Wife's car. Mentioned it was running better than usual the other day (for reasons unknown); then, said she heard a very loud noise from under the center of the car....not a bang (like a backfire), but more of a 'hit hard with a hammer' sound. Car immediately goes to somewhat sluggish running with 'check engine' light now on. Now, it shifts hard...slips a bit...when auto tranny is shifting from first to second.
I thought maybe bad gas at first, but she said the big 'wham' noise was definitely not a backfire. I looked under the car for anything obvious (I'm not a mechanic), and noticed that the rear part of the drive shaft had possibly come loose (slipped out) a half inch or so. Just making this observation from seeing where the shaft was shiney....then dirty like you might normally see.
Anyone have ideas? Sorry so vague about this, but that's all I know at this point. It's a 1999 Jeep Grand Cherokee 4x4 with 111k miles. Cars starts fine, but runs kind of weak...no passing gear etc, like it lost compression, maybe. Seems like a tranny related problem, but I don't know.
Thanks. I appreciate any input.
#4562 of 5143 1997 Jeep Grand Cherokee Stall Problem
Oct 02, 2009 (11:46 am)
I can't believe how many people have written in about the stalling problem with their Jeeps. Wish I had thought to find this site about a year ago - before we replaced several parts - due to the mechanic "not seeing the problem" while it was happening. I told my husband what I had found out about people replacing the crank shaft sensor - and he called the place who had done all the work last year that didn't fix the problem. One guy tells him "oh, that's a common problem with Jeeps." Well, we put the Jeep in the shop (an almost one hour ordeal to get the Jeep TO the shop that was less than 15 minutes away - because it KEPT STALLING and I missed Grey's Anatomy, too - and the mechanic calls him this afternoon to tell him that the computer is saying the CRANKSHAFT itself needs to be replaced and that in the 8 years he has worked at this location, he's not heard of replacing the crank shaft sensor ever!!!!????? Personally, I think it's bull - we're getting the same old thing - "it's running just fine"...but I'd much rather try to replace a quoted $75 part (includes labor) than a probably $500 part. Sure hope this works!!
#4563 of 5143 NEED HELP ASAP 1999 jeep grand cheerokee transmission problems
Oct 02, 2009 (7:56 pm)
Well i start out in the morning by backing out my drive then put it into drive and when i pull out my jgc is in 2nd gear not 1st half to shut car off and restart then everything is normal but still acts up every once and a while. Can anyone tell me i dont half to spend 1200 on a new trans or just a easy fix need to fix this asap it getting to me really bad thanks dayne. If u can email me i can check that faster
#4564 of 5143 Re: Jeep Grand Cherokee 4.0L petrol straight 6 - HELP [placesinfrance]
Oct 02, 2009 (9:28 pm)
what weight-(5w20?-1w30/40? )..whenever i start hearing scary noises-especially in the lower crankshaft area,i think the oil is too light..
-once had a ford aerostar,with a 3.0,started "knocking",while using "multi-weight"oil(10-w-30),..started using "racing oil,a -sae 50-,no longer heard the noise,and that engine lasted me another two years/with a total 160.000 miles. sold it to someone who needed it that bad,and i DID tell them about the noise,and what i did,so maybe it'd last them for a while..
--today's oils,are thinner there wasn't even a 5w-oil available back in the -70's..don't use that-nearly diesel oil in your crankcase !..the auto makers -in their effort to sell you to sell you a new car,recomend you use that garbage,so you'll need a new engine-and probably just go ahead and get a new car-well,before the economy went "around the bowl,and down the hole",it kinda worked..
--sorry about going off on a tangent,but- try the heavier oil-change the filter,see if the oil pressure gauge drops when you hear the noise,also,maybe check and make shure your not just low on oil??..
--put some "friction proffing" stuff in it(slick 50-z-max-etc..)
--take care of your engine-and it will take care of you-maybe..
--good luck !
#4565 of 5143 Re: NEED HELP ASAP 1999 jeep grand cheerokee transmission problems [dayneseditz]
Oct 02, 2009 (9:43 pm)
-sounds electrical..check and make shure battery terminals are clean..after that,i'd look for a loose engine ground wire-maybe even on the power control module-the main computer for the car..,but probably something vibrated loose.. try taking it to a auto parts place-and see if any "trouble codes" show up with their tester..
--my-98 gcl just started showing a empty tank-when i knew i had at least 1/4-even th "low fuel" lite came on..
was still running,so drove home-while smelling for "burning wires"(none-thank god !)..mext day,my 1/4 tank was back-and no lo fuel lite..put some in anyway-just to see if needle moved-it did..
guess this is one of those "bugs" that make owning a complicated piece of--..--gear sutch fun..especially now-when all that stuff is getting old..
-----don't ever want to find out-but wonder if the airbags would deploy?after twenty years??..makes you think..makes me drive better -where i shouldn't need them..nice and easy..
#4566 of 5143 Re: 1997 Jeep Grand Cherokee Stall Problem [2survive]
Oct 03, 2009 (6:32 am)
i would try the crank sencor as the magnets that control the crank sencor are perminat and the only whay that they can getoff is to have the crank brake or bolts to fly wheel come loose (if thwat happened you would hear a hole bunch of noise ubder your jeep)
#4567 of 5143 Re: 1997 Jeep Grand Cherokee Stall Problem [2survive]
Oct 03, 2009 (3:49 pm)
The crankshaft position sensor is a fail item. It's a challenge to get at, but can be done as long as you have an extended tool set. When that gadget isn't working right, the engine barely runs.
#4568 of 5143 over 2 rpms when it starts
Oct 05, 2009 (12:00 pm)
I have a 2000 Jeep Grand Cherokee limited edition that has about 173000 miles on it when I start it it revs up to or over 2 rpms and then it takes almost a minute for it to rev back down. Also it has a ticking in the engine at all times I was told once that it could be a collasped lifter? Can you help me figure out what I need to do to fix this
#4569 of 5143 Re: over 2 rpms when it starts [cacolfer]
Oct 05, 2009 (1:25 pm)