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Search: Posts Made By: v1rok
Jeep Forums: WJ Grand Cherokee Forum   02-23-2020, 09:46 AM
Replies: 20
Views: 1,140
Posted By v1rok
One more observation about the issue/symptoms....

One more observation about the issue/symptoms. Not sure if this will help to narrow down or confirm the diagnosis. But maybe it will help experts to eliminate something

After numerous starts and...
Jeep Forums: WJ Grand Cherokee Forum   02-22-2020, 06:37 PM
Replies: 4
Views: 292
Posted By v1rok
Autel MaxiDAS 808 (and I assume others from the...

Autel MaxiDAS 808 (and I assume others from the same family) works great on all of my cars, including WJ 2003

It shows tons of live data on everything, PCM, TCM, you name it. You can shut off...
Jeep Forums: WJ Grand Cherokee Forum   02-22-2020, 05:18 PM
Replies: 20
Views: 1,140
Posted By v1rok
Sdg, can you describe how to do leak down test? ...

Sdg, can you describe how to do leak down test?

I read somewhere here that even to replace head gasket would cost more than $2K (at a shop). I don’t think I will have time to do it myself. (Maybe...
Jeep Forums: WJ Grand Cherokee Forum   02-22-2020, 03:01 PM
Replies: 20
Views: 1,140
Posted By v1rok
No, don't have borescope at the moment. By the...

No, don't have borescope at the moment. By the way, I did pull the valve cover and I saw that all rocket arms were in place. So, this eliminates that, too.

Something must be bad inside that #1...
Jeep Forums: WJ Grand Cherokee Forum   02-22-2020, 01:39 PM
Replies: 20
Views: 1,140
Posted By v1rok
Thanks, Oregon! I did the test you suggested....

Thanks, Oregon! I did the test you suggested. Squirted some oil in cylinder #1 and did the compression test again.

The results:
1st time: 165
2nd time: 90
3rd time: 15
4th time: 0

In other...
Jeep Forums: WJ Grand Cherokee Forum   02-21-2020, 08:38 PM
Replies: 20
Views: 1,140
Posted By v1rok
Thanks for the suggestion! How easy is it to...

Thanks for the suggestion!

How easy is it to pull the cover? Is it like 2 hr job or 2 day job or 2 week job? (For a DIY garage mechanic)
Jeep Forums: WJ Grand Cherokee Forum   02-21-2020, 06:49 PM
Replies: 20
Views: 1,140
Posted By v1rok
Is my WJ doomed? No compression in Cylinder #1

Hi,

I previously reported about misfiring in #1 cylinder. (With P0301 error code.) I checked/swapped plugs, checked/swapped coils, checked wiring. Still misfiring

Today I did compression test....
Jeep Forums: WJ Grand Cherokee Forum   02-19-2020, 07:31 AM
Replies: 12
Views: 429
Posted By v1rok
A little bit go Googling helped me find where the...

A little bit go Googling helped me find where the fuel pump relay should be. Top right corner in the diagram below
Jeep Forums: WJ Grand Cherokee Forum   02-17-2020, 10:11 PM
Replies: 12
Views: 429
Posted By v1rok
Good suggestion. While removing/swapping spark...

Good suggestion. While removing/swapping spark plugs, I might as well do compression test.

I have a compression gauge already. I did compression test on another engine (jaguar) about 3 years ago....
Jeep Forums: WJ Grand Cherokee Forum   02-17-2020, 01:16 PM
Replies: 12
Views: 429
Posted By v1rok
Krazy8, I might try to put in different spark...

Krazy8, I might try to put in different spark plugs, just to make sure. Though I strongly suspect this is not why #1 is misfiring. I replaced plugs about two years ago and the engine purred nicely...
Jeep Forums: WJ Grand Cherokee Forum   02-16-2020, 09:57 AM
Replies: 12
Views: 429
Posted By v1rok
The engine is v8 4.7L HO. Car has 137k on the...

The engine is v8 4.7L HO. Car has 137k on the clock.

I pulled the plugs from #1 and #2 just after it started misfiring. See the picture below. #1 is at the top.

It is definitely "oily". Does it...
Jeep Forums: WJ Grand Cherokee Forum   02-15-2020, 07:20 PM
Replies: 12
Views: 429
Posted By v1rok
Is it common for oil leak to cause misfire in one of the cylinders?

I have been dealing with misfiring detected in cylinder 1 (with error code P0301 popping up).

I swapped coils, checked injectors, swapped spark plugs. Still the same cylinder 1 misfiring. The...
Jeep Forums: WJ Grand Cherokee Forum   01-29-2020, 09:00 PM
Replies: 6
Views: 262
Posted By v1rok
John, I can attest that Autel maxidas does read...

John, I can attest that Autel maxidas does read codes, including tranny codes, from 2003 and earlier model years
Jeep Forums: WJ Grand Cherokee Forum   01-28-2020, 07:55 PM
Replies: 6
Views: 262
Posted By v1rok
During last year’s Amazon prime days, I got Autel...

During last year’s Amazon prime days, I got Autel MaxiDAS DS808. It is pricy, around $700, but it is worth it, IMO. I could not have been happier.

I used it on my ‘03 WJ, ‘13 WK2, and ‘16 Range...
Jeep Forums: WJ Grand Cherokee Forum   01-27-2020, 10:09 PM
Replies: 3
Views: 154
Posted By v1rok
Bringing it back to the top. Anybody heard...

Bringing it back to the top.

Anybody heard about A900 error code from TCM?
Jeep Forums: WJ Grand Cherokee Forum   01-26-2020, 06:57 PM
Replies: 3
Views: 154
Posted By v1rok
I was using Autel MaxiDas tool, which can scan...

I was using Autel MaxiDas tool, which can scan both conventional and more advanced codes.

There were no other codes from TCM. I have been also dealing with intermittent misfiring of Cyl #1, which...
Jeep Forums: WJ Grand Cherokee Forum   01-26-2020, 05:16 PM
Replies: 3
Views: 154
Posted By v1rok
TCM transmission module error codes: A900 and AD00

When scanning for error codes using advanced scanning tool, I got error codes A900 (first) and AD00 (later) from TCM.

I tried googling what those codes mean, but did not find anything.

Anybody...
Jeep Forums: WJ Grand Cherokee Forum   01-19-2020, 07:59 PM
Replies: 36
Views: 1,474
Posted By v1rok
Thanks! I will try

Thanks! I will try
Jeep Forums: WJ Grand Cherokee Forum   01-19-2020, 02:26 PM
Replies: 36
Views: 1,474
Posted By v1rok
Green, I might want to do similar test with...

Green,

I might want to do similar test with paper towel. I have 4.7 V8 with misfiring cylinder #1, which throws P0301 code. This is intermittent. Sometimes it misfires, with engine shuddering....
Jeep Forums: WJ Grand Cherokee Forum   01-05-2020, 01:53 PM
Replies: 3
Views: 395
Posted By v1rok
st100, Have you figured what was causing...

st100,

Have you figured what was causing misfiring/rough running with codes P0301, P0302, and P0300?

Yesterday I expereinced exactly the same symptoms in my 2003 Overland with 4.7HO. Your...
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