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Search: Posts Made By: WJ Fan
Forum: Troubleshooting/Problems 06-22-2012, 07:22 AM
Replies: 11
Views: 2,038
Posted By WJ Fan
Re: Intermittant coolant leak- Air conditioning system?

Sounds to me like a trip to the dealer may be in store...
Truck runs like a top, so I doubt the blown gasket theory, but that is always a possibility. Am inclined towards the heater core, but we...
Forum: Troubleshooting/Problems 06-18-2012, 01:59 PM
Replies: 11
Views: 2,038
Posted By WJ Fan
Re: Intermittant coolant leak- Air conditioning system?

Sorry- heater, not air conditioner.
Forum: Troubleshooting/Problems 06-18-2012, 01:22 PM
Replies: 11
Views: 2,038
Posted By WJ Fan
Intermittant coolant leak- Air conditioning system?

OK, got one overland fixed (4.7HO swap) only to have an issue spring up - unpredictable coolant loss.

This 2002 overland has 107K miles.

Here is the story- Son who has had the truck calls...
Forum: Troubleshooting/Problems 06-18-2012, 12:43 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Further follow up- reconditioned 4.7HO long block from a 2005 dodge with 50K miles swapped into the Overland. During the process, a short in the upstream left O2 sensor harness was revealed. That...
Forum: Troubleshooting/Problems 06-18-2012, 12:38 PM
Replies: 3
Views: 461
Posted By WJ Fan
Re: Need a reco 4.7 motor

Standard 4.7 or HO?
Forum: Troubleshooting/Problems 05-16-2012, 08:49 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

No worries- No harm/foul. like I had indicated above, I started my negotiation on price with the prior owner with the assumption that the engine was toast, and decided to drop the cash on the...
Forum: Grand Cherokee - WJ 05-16-2012, 04:10 PM
Replies: 40
Views: 2,605
Posted By WJ Fan
Re: Looking at a few 4.0L WJs

I would be v glad to sell you the 4.0 WJ that i put all that money into for 5K, and pretty much all of the issues are sorted out, runs well, new brake system, new tires, trans is in good shape, new...
Forum: Grand Cherokee - WJ 05-16-2012, 04:05 PM
Replies: 40
Views: 2,605
Posted By WJ Fan
Re: Looking at a few 4.0L WJs

Price is way too high. You can get an overland at that price if you shop hard. I paid 7K for one that had 100,000 miles and was immaculate, $2500 for another that I am putting a rebuilt 4.7HO into...
Forum: Engine Performance/Intake/Exhaust 05-16-2012, 02:18 PM
Replies: 7
Views: 1,940
Posted By WJ Fan
Re: Pulling 4.7 out of WJ requires special tool??

To close out this thread, Engine Lifting Fixture Special Tool 8347 is very helpful but not required when pulling the 4.7 engine. Use of this tool avoids bending the lifting bolts (which happens if...
Forum: Engine Performance/Intake/Exhaust 05-16-2012, 02:13 PM
Replies: 3
Views: 1,776
Posted By WJ Fan
Re: 4.7 HO engine vs heads rebuild recommendations?

So, to close out this thread, I was able to purchase a partially re-built 4.7 HO long block from a Dodge Dakota (16 tooth, of course) with 58,000 miles for $1600 US. This engine includes refacing...
Forum: Troubleshooting/Problems 05-16-2012, 02:06 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Just to close out this thread, the cylinder #6 problem was a broken valve lifter assembly, presumably due to the sleeve popping out when the engine was over heated, and then popping back in. I am in...
Forum: Engine Performance/Intake/Exhaust 04-30-2012, 11:08 AM
Replies: 7
Views: 1,940
Posted By WJ Fan
Re: Pulling 4.7 out of WJ requires special tool??

I guess that would be the Engine Lifting Fixture Special Tool 8347?
Forum: Engine Performance/Intake/Exhaust 04-30-2012, 11:00 AM
Replies: 7
Views: 1,940
Posted By WJ Fan
Pulling 4.7 out of WJ requires special tool??

Looking to swap out existing engine in a 2002 Grand Cherokee Overland (misfire #6, wet plug, leaking freeze plug vs other leak) for another 4.7HO from another 2002 Grand Cherokee Overland that was...
Forum: Troubleshooting/Problems 04-28-2012, 11:26 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

If it is the outfit in NJ, they will not do 4.7 HO engines.
Forum: Engine Performance/Intake/Exhaust 04-28-2012, 04:10 PM
Replies: 3
Views: 1,776
Posted By WJ Fan
4.7 HO engine vs heads rebuild recommendations?

HI Folks:

Having stepped through a lot of alternate ideas, I am down to having to decide between a total re-build on a 170K mile 4.7 HO engine versus the cost of just having the heads done.
...
Forum: Troubleshooting/Problems 04-28-2012, 04:06 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Anyone have recommendations for a shop for 4.7 HO engine re-build? Preferably in the South east, Ohio, Tennessee.

Seems that nothing major is going on, but the #6 cylinder mis-fire is...
Forum: Troubleshooting/Problems 04-28-2012, 03:40 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

OK, did all that stuff. Replacement O2 sensors (Denso) throwing codes, not heating etc.

Each step seem to help running (except the O2 sensors), but the biggest difference was when I replaced the...
Forum: Audio/Visual/Navigation 04-24-2012, 10:16 AM
Replies: 7
Views: 3,779
Posted By WJ Fan
Re: How to Remove Front Dash speakers?

Yup. So long as you have been gentle but firm in removing it. Just align the tabs. I find that a sharp blow with the heel of your hand is all that is required to pop it back in. Trust yourself-...
Forum: Interior/Exterior/Visual 04-23-2012, 05:14 PM
Replies: 13
Views: 779
Posted By WJ Fan
Re: Does anyone know the dimensions of the 99'-03' fog housing?

FYI, Here is the result of that little project
Forum: Interior/Exterior/Visual 04-23-2012, 05:03 PM
Replies: 13
Views: 779
Posted By WJ Fan
Re: Does anyone know the dimensions of the 99'-03' fog housing?

I upgraded my son's '99 Laredo to Limited trim, and included the fogs in the modification. To do so with the existing front bumper cover would have been a hassle. Instead I just purchased a new...
Forum: Audio/Visual/Navigation 04-23-2012, 02:12 PM
Replies: 7
Views: 3,779
Posted By WJ Fan
Re: How to Remove Front Dash speakers?

Dead easy- I have done it on two WJ so far. A plastic spatula from home depot or similar is the right tool- just slip it under that seam and gently pry off. Start about 6 inches from one end. YOu...
Forum: Troubleshooting/Problems 04-22-2012, 11:31 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Thanks for the comment. I am torn, but the sensors and reman injectors have run about $400 total and I can do the labor. Found great discounts trolling Amazon and Ebay. If it is the heads, then we...
Forum: Troubleshooting/Problems 04-22-2012, 07:13 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Great tip, particularly for the amateur mechanic such as myself! I will try to meet expectations.

I am getting much more comfortable working around the engine, what with all of this on and off of...
Forum: Troubleshooting/Problems 04-22-2012, 06:52 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

RE: running better- wife wanted some chocolate (yes, that time), and so I did a run to the local food and fuel, which provided a chance to jump on and off the expressway in each direction. Putting...
Forum: Troubleshooting/Problems 04-22-2012, 06:40 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

coolant loss- very interesting question.

I guess you are indirectly asking about warped heads from the overheating event? The original overheating event (months before I bought the truck) was...
Forum: Troubleshooting/Problems 04-22-2012, 05:07 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Good feedback, thanks.

The scanner that I have access to only pulls codes- I will inquire about access to one that can provide live data.

Cannot say if the fluid on #6 was coolant or oil, but...
Forum: Troubleshooting/Problems 04-22-2012, 10:04 AM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Thank you. I think that I will replace the sensors first, and then make a decision. The fact that it runs fairly well for 170K miles in open loop circuit (plus the intuition of my trusted,...
Forum: Troubleshooting/Problems 04-22-2012, 09:18 AM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Here is the update, in case anyone is listening:

As of Sat AM, the Codes read
P0300 (M) Multiple Cylinder Mis-Fire
P0303 (M) Cylinder #3 Misfire
P0306 (M) Cylinder #6 Misfire


Coil testing...
Forum: Troubleshooting/Problems 04-20-2012, 03:21 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

I notice that you are a Fl-based vendor, FlyinRyan. I am in N Georgia. Do you have any recommendations for a shop to do either a head re-build or a full engine re-build? Perhaps you have one...
Forum: Troubleshooting/Problems 04-20-2012, 01:04 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Thanks for confirming that, which is consistent with my understanding.

http://www.wjjeeps.com/ho_engine.htm

6. Cylinder heads - different shaped combustion chambers (for improved airflow)....
Forum: Troubleshooting/Problems 04-19-2012, 08:12 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

The overheating history that I got from prior owner was that wife let the radiator fluid run low, it overheated, she stopped the truck until it cooled and then added fluid, the misfire started a...
Forum: Troubleshooting/Problems 04-19-2012, 07:53 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

FYI- I can confirm- complete repair manual in PDF form (requires adobe reader 10) for 8 bucks, rapid download
...
Forum: Troubleshooting/Problems 04-19-2012, 06:27 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Did not get a history of PS pump failure or receipt for repair from prior owner, who had owned since 30,000 miles (I purchased at 165K), and he was pretty complete with most of his history. Great...
Forum: Troubleshooting/Problems 04-19-2012, 05:52 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

obrigado Frango.

Enjoy Brazil a lot. As a nation, this may be your century to finally move to a central role on the world stage. Atlanta has a local embassy and Brazilian/American chamber of...
Forum: Troubleshooting/Problems 04-19-2012, 05:31 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

RE: Factory download manual- does this source look legit?

http://www.tradebit.com/filedetail.php/155468722-the-best-2002-jeep-grand-cherokee-factory
Forum: Troubleshooting/Problems 04-19-2012, 05:27 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

RE: Factory manual on CD, I saw those on ebay, was not sure if they were the right thing to do, hence the open ended question. Now I have two good source suggestions, one for specs and the other for...
Forum: Troubleshooting/Problems 04-19-2012, 05:21 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

RE: Denso vs Mopar for O2 sensors- also read that previously, understood. But not Bosch, right? I am all about being cheap so long as quality does not suffer- see prior RE: trolling for used...
Forum: Troubleshooting/Problems 04-19-2012, 09:30 AM
Replies: 45
Views: 2,187
Posted By WJ Fan
Re: 02 Overland- rough running at speed

Thanks for the feedback.

I agree that the acceleration is not consistent with plugged Cat converter, and from what I read it bypasses O2 sensor PCM control ("open circuit"?), hence the thesis...
Forum: Troubleshooting/Problems 04-18-2012, 10:33 PM
Replies: 45
Views: 2,187
Posted By WJ Fan
02 Overland- rough running at speed

OK- I feel like I have come to the oracle at Delphi... but here it goes

Took a risk and bought a 2002 Overland with engine issues (including check engine light) for a song (a "match" to the...
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