Anyone familiar with a 2000 Jeep Grand Cherokee 4.0 that mysteriously leaks coolant?

10

Asked by Oct 03, 2014 at 10:21 AM about the 2000 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

New radiator, new thermostat, checked for cracked head or head gasket leaks - no issues there.  Pressure on system reveals no leak.  Very little pressure at radiator cap.  Temps constant.  No leaks under Jeep when parked.  Going through quart of coolant/per week.  Respond to bdcave41@gmail.com.  thx!

10 Answers

32,395

SPAM SPAM SPAM SPAM SPAM SPAM SPAM SPAM OH AND DID I SAY SPAM?

1 out of 1 people think this is helpful.
32,395

Well, Dude, when you include a email address in your question, it reeks of some Nigerian Princes millionaire looking to add to his list of potential suckers. This is the way to correspond. Not by personal email.

1 out of 1 people think this is helpful.
10

Sorry. Newbie just looking for answers. Forget the e-mail request folks. I will get my information here. BohoMark any clues about my problem? Thanks.

1 out of 1 people think this is helpful.
61,445

First thing boyd,do you smell anti freeze,at any time when you get out of jeep after it is warm?

2 out of 2 people think this is helpful.
32,395

The 4.0 engine is about as bullet proof as thy come. What were the compression test reading when you had it tested?

1 out of 1 people think this is helpful.
61,445

In my opinion,when you done the pressure test,with this small of leak,you would have to wait,a good while before it would show a leak down,and in my personal expereance,have delt with the same problem on a cherokee,it was a very small micro pin hole in the intake gasket,that only leaked while driving it,and engine heat would dry it up without even a trace of it,i replaced intake gasket and no more mystery leak.

32,395

T_S_T. I think you hit the nail on the head. That makes perfect sense. Boyd, do you ever get the smell of anti freeze?

1 out of 1 people think this is helpful.
10

I have never smelled anti freeze. Even up under the hood. We will replace the intake gakest. I am convinced it is turning to steam from someplace. I love this old Jeep, even w/ 235K it still runs very well. THANK EVERYONE for your input. I really appreciate it. I'll let y'all know!

10

BoHoMark, I will get the compression readings. They seemed ok to me, but I am not as knowledgeable as you guys. Thanks!

7,035

4.0 heads are known to crack

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