Instant Overheat

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Jul 10, 2012 | 12:47 PM

#46

9294Forrest

CF Veteran

Joined: May 2012

Posts: 1,004

Likes: 0

Model: Cherokee

Quote:

Originally Posted by markcrain

Well hosing out the radiator didn't make much difference if at all. I guess I'm down to flipping a coin on the new rad or new water pump. I notice the water level in the rad drops when I run up the RPM so I'm guessing it's compressing water into the engine so it's pumping. That leaves a new radiator. Does anyone make a upgrade rad for the 99? If I replace I hate to go stock.

At this point, take it to a mechanic... No point spending $$$ on 1 part having it not be it, then having to buy another and hope its that, just pay the money, at least for a diagnostic... -.-

Jul 14, 2012 | 04:38 PM

#47

markcrain

Thread Starter

Junior Member

Joined: Feb 2010

Posts: 73

Likes: 0

From: Naples FL

Year: 1999

Model: Cherokee

Engine: 4.0

Heres the deal and the fix. It was the radiator. Install new one today and all is good to go. I think the most important thing to know is the fact that the computer takes the temp gauge and shoots it up to 250 when it hits 221. Something about an effort to point out the problem. If you don't know that it kinda blows your mind if your thinking its reading that. Also the after market rad that I bought doesn't allow the fan shroud to fit back on. You have to remove the top and bottom off the old rad and install it on the new one.......but first you want to install everything else just once to figure that out then rip it all back apart. Thanks for all the advice and help......except Mr. it's an air bubble in the system just do what I tell ya or stop asking for help guy. Mark