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If parked on a slight hill with engine end of the vehicle down-hill there is a with 20-30 second delay in rise of oil pressure after starting the vehicle. Guage sits on ZERO and check engine guage lite comes on--no engine noises. Then guage goes up to proper level but sometimes all the way to the highest measurement of the guage (80). Jeep has never done this before. I am concerned about the relatively ling time the engine runs with no oil pressure registering on guage. OIL dipstick after last oil change slightly above full level on level ground with engine cold--Oil change place say this slight over fill is not a problem
Does not do this when parked on level ground
My 98 Cherokee Sport hesitates when I back it up. It also starts lurching and bucking on the highway after it's been running for a while. Lastly, it backfires internally if you try to start it up but don't turn the key to the on position for about 30 seconds ahead of time.
Any ideas what could be going on? I'm planning a trip cross-country in May and obviously can't take it running like this. I live in a small town and the only "mechanic" within a reasonable drive is a backyard guy.
Thanks a lot.
John
Having problems with my daughters 03 Grand Cherokee 4.7 HO. A few months ago, it would just stop running. Ended up replacing the cam and crank sensor. The engine continued to run rough. Ended up having a #7 cylinder miss fire. Replaced the spark plugs and all was good. Now it came back on the #7 cylinder. Switched coils around and still continued to run bad. The #7 spark plug didn't look bad or smell bad like it wasn't firing cause of spark, but maybe no gas???????
Scott
Thank you,
Brian
Thanks for looking -Erika
Since December 2010, my check engine light has come on five times. I've included below what was done each time at the mechanic.
73,797 - P0456 Error Code - Evaporative emission control system leak detected (very small leak) - 11/26/10 - Possible loose gas cap, mechanic tightened and tested cap and reset the OBD.
74,102 - P0442 Error Code - Evaporative emission control system leak detected (medium leak) - 12/7/10 - Gas cap tested bad, mechanic replaced the gas cap and reset the OBD.
77,718 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 5/31/11 - Possible loose gas cap, mechanic tightened cap and reset the OBD.
77,865 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 6/10/11 - Mechanic replaced the evaporative vent solenoid (solenoid was clicking loudly on the 11/26/10 date) and the crankcase vent hose (hose was cracked); reset the OBD.
78,161 - P0455 Error Code - Evaporative emission control system leak detected (large leak) - 6/21/11 - Mechanic suggested going to the dealer because they have an advanced computer system.
My questions:
I've researched this on Google and it appears that many have had this issue on different Chrysler vehicles, many with no resolution. My mechanic said he could do a smoke test (pump smoke through the evaporative system) to see if that shows anything, but he said that this can be expensive to track down the problem. The dealer wants $95 just to run diagnostics (which would apply to my estimate to get it fixed, assuming they figure out the problem).
Have you heard of this? If so, what have people tried?
Any other suggestions?
The mechanic said I could drive with the light on, but this makes me uneasy, especially if I go out of town. I have noticed a decline in gas mileage. Other than that, it may run slightly rough here and there, but overall doesn't seem phased by this issue. I haven't spent a ridiculous amount of money so far, but I'm trying to keep the costs down on this.
Thanks!!
ABS light is on all the time.
When you start the car it revs up so loud and high
When u first start driving it is sluggish.
When driving it seems to have a hard time shifting gears,
it is automatic, i let off gas and it kicks in.
When I put it from park to drive it clunks.
When I make a turn to like park it clunks.
And last but not least there is a constant sound coming from like down by brake pedal and accelerator like a constant hiss or air flow. Please help!!!
Then your camshaft positioning sensor, and next your crankcase positioning sensor. I'd do one every pay day to see It the problem gets rectified. If not the problem,,,then time to have it diagnosed or pull the codes yourself.
Mine was trying to stall when stopping at lights for example. The key here with the four O2 sensors is if the rough idle symptoms I was describing happen while in neutral. If the WJ runs rough with or w.o the tranny engaged it is most likely an O2 sensor issue, or the IAC motor pintle, or the cam position sensor. It all hinges on the error codes like u said. Just thought I would throw this in since it is fresh in my mind.
The loud roaring noise is the coolant system fan clutch engaging on startup. It needs to be replaced, but if you rev it in neutral it will shut off. FYI.
We all feel for you here. Everyone here is very nice and helpful. We need more info!
How many miles does it have?
What has been done to it maintenance/repair wise?
Which engine? 4.7 V8 or the I6?
The WJ model Grand Cherokee has a litany of recalls, electrical problems, computer problems, transmission and transfer case problems, etc.
So...
1) make sure there is oil, coolant, and TRANS FLUID in it. Have your service station check them for you first thing.
2) See if a local shop has a special where they will diagnose your check engine light for free (with the hopes of you allowing them to fix it).
3) Write down all the issues you are having so you don't forget anything
4) Be prepared to spend $2,000 to $5000 in repairs. I am not kidding unfortunately.
Anything we advise you on here is supposition and educated guesswork due to the sheer amount of issues you are having.
Last, if you can afford to have it repaired, it is a great driving, great looking, versatile vehicle. However, it is a truck and has expensive, heavy-duty parts that cost a ton of money, so if you have 4 kids and a limited income, get rid of it and buy a front wheel drive, highly rated, reliable car that has less things to break!!! Sorry!!!! :+(
Other than that, reduced pressure = leak! :=(
No I am not trying to make fun of the sad events at 9/11, but only to poke fun at a vehicle that J have poured thousands of dollars into.
Sorry! :lemon:
I still love my Grand Cherokee, especially the music of the V8. however, never a day goes by that I do not regret buying it and sinking 10,000.00 in repairs over the past 5 years. It has been difficult. Every repair I have had is over $2000.00.
I will not buy one again. It was just too much. I am gun-shy of Chrysler forever!
NO WAY a "premium" vehicle that we paid money for should run like this. I could have purchased a 10K little puddle jumper that would not run like this. I am extremely disappointed with this running issue on this vehicle...it makes it worse that I love the looks, drive and features but will likely not buy Jeep again.
Was told this could be the oil pump???? Need help since I need to get this fixed but dont want to get screwed by dealership/repair shop and overpay if its something simple and easy fix. Help Please!!!
Once we have a little more info then we can research the problem for you. I know how it is to face expensive repair bills. -Chris
The pan needs to come off so it can be inspected. If you are lucky, it could be a bad ending unit/sensor.
Have it checked immediately.If you fry the engine it will be a very expensive repair. Good luck! :=)