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My Jeep is now running like a dream and has been for months.
I have been told, subsequently, that this is not uncommon. It took me weeks however, to finally find the solution.
I hope this will help solve your problem. Good luck.
After all is done I can finally turn the ignition over which it would not do previously but now I get no spark, In fact I pulled the fuel line off the new filter and get no fuel flow. I hear the Fuel pump do it's 'hum' for the second as I turn the key but no fuel flow. I pulled the Air Ductwork off the Throttle Body and turned it over while spraying starter fluid into it to see if I could at least get a hit on the engine to try and start but no luck. Yeah, I know, a little Old School but I had to try. I am at the point of towing it to a dealer and that is gonna kill me. I did check the fuses and relays.
I am at a loss... Does anybody have ANY suggestions?
It is the 4.7L non-HO Gas Engine.
I did try shifting to neutral to start just in case it was the switch in the shifter as I have read can happen but no luck.
Thanks guys and girls for any advice!
Adam
I hope your are recovering okay. I was rearended in my Jeep and I am now permanently disabled because of the accident, but thats besides the point.
I have heard of this problem, Jeeps are known for having problems with the transmission suddenly lunging forward even when they are in park. The car wash I go to regularly recently redesigned the entire layout of the wash after a Jeep Grand Cherokee lunging forward(while in park) onto a 4-lane road and flipped over the cennter median.
Now no one but a manager at the detail shop is even allowed to drive the Jeeps.
Jeeps have problems with the neutral safety switch and most models have had a recall on this part. My 99 Limited had this recall. I was told that it is this part that causes the Jeeps to jump out of park.
I know your jeep was totaled out but if you have your paperwork you can contact jeep to see if there was ever a recall on this part and if you had it replaced. If you did and you still had this happen I would contact a lawyer.
I hope this helps.
We have also had problems with the camshaft sensor also.
I have a 1996 Grand Cherokee V8 and it won't start.
I've had both the battery and altinator checked at Auto Zone and they were fine.
Any help will be greatly appreciated. :confuse:
1). As I try to turn it on it makes a clicking noise
2). when it does turn on the motor accelerates as if i was stepping on the gas and the RPM shoots up.
3). After a few seconds of (step 2) the RPM drops down as the acceleration decreases dramatically to a point were it wants to turn off. It continues to dance on the RPM scale from 1k RPM to 500
4). When i would step on the gas pedal it wouldn't respond only if i were to press it down several times. but it would come in delay periods in between after i press the pedal.
5).Finally it turns off on its own or when i try to shift it to reverse or drive.
It be the obvious thing to take it to the mechanic but money is a lil tight right now so I'm open to any suggestions from anyone out there. :sick: :confuse:
When under hard throttle acceleration (what other kind is there with a 2.5l four?), motor doesn't seem to be pulling at full power. But when the throttle is backed off halfway or more, the motor actually "surges" and runs stronger at part-throttle than it does at full throttle. Also occurs in normal driving, just not as obvious. Not a misfire, just weak...
For various reasons, over a couple of years, have ended up replacing EGR valve, dist. cap & rotor, wires, plugs, fuel filter, tried swapping fuel pumps, swapped to a different throttle body (& checked correct fuel pressure), replaced O2 sensor, catalyst (loose pieces were rattling around inside), replaced water temp and inlet air sensors, swapped ignition module and MAP sensor at one point or another, bought a new (high-altitude) CPS, etc. Last update was to add a "torquer cam" (great results from that). But still it surges.
Took it in to Jeep dealer for analysis -- they "tweaked" the TPS setting, then told me their best guess is that this is caused by "a slow computer" (a $500 replacement based on a guess?). I've been in electronics many yrs; generally you either have a good computer or a dead computer -- a "slow" computer would have to violate numerous laws of physics... (the Renix CPU is like the Eagle; not much in the way of retained error codes or diagnostics to look at)
Starts & runs (as well as can be expected), gets good mileage, but the non-linear throttle response is crazy. Any ideas, or anyone seen this on another Jeep? Maybe it's generic to the 4-cyl?
Let's keep the discussion here so everyone will benefit.
tidester, host
SUVs and Smart Shopper
1 Inspect M.A.P. Sensor Faulty M.A.P. Sensor.
2 Inspect EGR Valve Improperly Functioning or Faulty EGR Valve
3 Inspect Fuel Injector Dirty or Worn Fuel Injectors.
4 Inspect Idle Air Control Valve Damaged, Loose, or Faulty Idle Air Control Valve.
5 Inspect Idle Speed Actuator Damaged, Loose, or Faulty Idle Speed Actuator.
6 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor.
7 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
8 Inspect PCV Valve Plugged or Damaged PCV Valve.
9 Inspect Carburetor Worn, Faulty or Damaged Carburetor.
10 Inspect Valve Burned, Worn, or Sticking Exhaust Valves.
12 Inspect TimingSet Slipped TimingChain or Worn TimingGear(s).
13 Inspect Fuel Pump Faulty Fuel Pump.
14 Inspect Camshaft Camshaft Lobes Worn.
16 Inspect Point Set Burned, Worn or Incorrectly Set Ignition Points
tidester, host
SUVs and Smart Shopper
But I cannot make it up a hill without it bogging out and dying. I checked the cap and rotor and found fluffy corrosion and replaced them. The problem remained. I replaced the plugs and the problem remains.
All I can think of is it's either an ignition or fuel delivery problem.
Can a coil start to fail where it just can't deliver enough current to the plugs when the demand is high? Or should I start looking elsewhere like the fuel filter etc?
This is a '94 with 140,000 well maintained miles, and otherwise runs perrrfectly.
One other thing is that this happened about a year ago for a day or two, then suddenly stopped and has worked normally until now. Now it's constant and is unusable.
Anyone ever experience something similar?
3 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor.
4 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
7 Inspect Fuel Injector Dirty or Worn Fuel Injectors
Inspect Mass Air Flow Sensor Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit
I've had my jeep for about a year and the last 6 months it's been doing this squealing thing that baffles me. It started with my AC compressor. No problem, pulled it off put on a bypass pulley and called it a day. Then it starts shredding belts, I poke around, found the idler between the bypass pulley and the alternator had some play in it. Charged it, squeal goes away. Then the tensioner pulley ate itself, replaced that. But now, I'm looking at this thing and it looks like my power steering pulley is canted inboard, and now it takes one or two of the serpentines off my belt, and then stops squealing.
I'm thinking that the misalignment of the power steering pump is causing some funky pull on the alternator because that appears to be where the squeal is coming from. It's either that, or the solenoid in the starters sprag clutch never disengages and it's just being lathed into.
Anyone ever come across something like this? What did you do to fix it?
I have got a 2000 V reg JGC and I am trying to find a replacement engine for it, the one in it runs on a coil pack but I have been told that I can change it for the older distributor type. Is this correct? and if so what is involved do I have to change anything else?
Thanks
Kev
tidester, host
SUVs and Smart Shopper