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Search: Posts Made By: bigdee
Forum: Troubleshooting/Problems 09-01-2012, 09:09 PM
Replies: 6
Views: 2,031
Posted By bigdee
Re: Oil Presure Drops to Zero?

I also have the same problem. Spent alot of time obsessing about it,verified with mechanical gage to be 5psi at HOT idle (650rpm) and 22psi at 2000rpm. This was 8 months and many miles ago. I...
Forum: Troubleshooting/Problems Discussion 06-09-2012, 11:15 PM
Replies: 5
Views: 601
Posted By bigdee
Re: Lazy OIL psi gauge

Just the opposite,switch is NC at less than 7 psi. Grounding the purple wire will send gage to zero.
Forum: Troubleshooting/Problems Discussion 06-09-2012, 08:33 PM
Replies: 5
Views: 601
Posted By bigdee
Re: Lazy OIL psi gauge

Or REMOVE the wire from the sending unit and the gage will read normal or a little more than half way!
Forum: Troubleshooting/Problems Discussion 06-07-2012, 09:43 PM
Replies: 5
Views: 601
Posted By bigdee
Re: Lazy OIL psi gauge

I'm not sure about '06 but the '04 does not have a gage. The gage is just for looks and stays in the middle unless your pressure drops to about 4-7 psi and the gage will read ZERO.
In other words...
Forum: Troubleshooting/Problems 05-17-2012, 06:54 AM
Replies: 4
Views: 540
Posted By bigdee
Re: no oil pressure

Did you prime the oil pump? What engine? Rocker arm bearings?...did you mean rod bearings?
Forum: Troubleshooting/Problems 05-13-2012, 09:04 PM
Replies: 13
Views: 6,499
Posted By bigdee
Re: 2000 jeep grand cherokee no oil pressure when warm

Wow, I have the same problem. It was like this when I bought the Jeep six months ago.....I finally said to heck with it and just drive it. However mine does come up to about 20 psi at cruising...
Forum: Troubleshooting/Problems 01-12-2012, 05:11 PM
Replies: 11
Views: 2,454
Posted By bigdee
Re: low oil pressure

Thanx for the reply. I did check for metal and found some VERY fine shiny stuff....drug a magnet through oil and it came up clean so I assume the few flakes were bearing material. I have a...
Forum: Troubleshooting/Problems 01-12-2012, 01:34 PM
Replies: 11
Views: 2,454
Posted By bigdee
Re: low oil pressure

Done that....6-10 lbs at hot idle. No water in oil. Looked in oil fill cap hole and oil is circulating. I hear a VERY faint knock but it sounds more like piston slap.....runs strong and uses no...
Forum: Troubleshooting/Problems 01-11-2012, 08:06 PM
Replies: 11
Views: 2,454
Posted By bigdee
low oil pressure

Hi to all. I am new to this forum and hope to tap into some expertise and experience. Problem: 4.0 2004 Cherokee runs great, very quiet and runs strong but after it warms up the oil pressure drops...
Forum: Troubleshooting/Problems 01-10-2012, 10:39 PM
Replies: 0
Views: 338
Posted By bigdee
Is this the original motor

2004 Cherokee with 4.0, number on block is 009MX27. Should't it be something like 40*MX** ?? The motor appears to have had a new cylinder head installed recently
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