Question about 1996 Jeep Grand Cherokee

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Numerous problems, need expert repair service in MD-DC-Balt area

1996 JGCL with 175K miles has some problems and is overall a good vehicle BUT I keep getting taken by repair places that do not fix it!
Problem 1: Oil gauge, oil light, chime activate for low oil pressure at idle after 15-30 minutes of driving/use. Had oil sending unit changed twice and still have problem. Oil gauge goes to zero during idle but no rough idle or noticeable change in engine (318ci V8) - can't submit for emissions testing with indicator light coming on.
Problem 2: Automatic door that controls air flow seems to have a problem (getting stuck) as get hot air flow intermittently. Change out of temperature controller module did NOT cure problem. Problem started AFTER after dash tear down to replace A/C evaporator core (known defect with these vehicles).
I greatly appreciate any help, insight or just plain straight advice on how to find a superior Jeep mechanic.
Tom M.

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  • jhendrixfan Nov 09, 2008

    I am in the Annapolis, MD area. I need an expert local mechanic that can ascertain without lots of cost if the engine is really worn to the point of being non cost effective to repair (worn rings, crank bearings, etc.). The 318 used to be a mopar workhorse and I have owned this vehicle since 19K miles.



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Posted on Nov 09, 2008

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Problem#1 - first check idle air mixture - even 150 RPM too low will cause PCM to think it's not getting enough pressure. Also I checked with my ASE certified mechanic and rings, crank bearings etc could be worn to the point that the pressure is actually getting too low. The heater box in problem #2 is probably the culprit. Many inexperienced techs will put these together incorrectly so it will need to be reassembled correctly for it to work properly. Good Luck - Hope this helps!!!

Posted on Nov 09, 2008

  • Lance  McKinney
    Lance McKinney Nov 09, 2008

    If you give me an idea of where you are I might be able to recommend a dependable mechanic in your area. After 10 years with Chrysler you get to know folks in the repair industry all over the country.

  • Lance  McKinney
    Lance McKinney Nov 09, 2008

    Try Silver Star Repair

    240 West St Annapolis Md


    Tell them you simply need to have compression tested on your 318 to determine if it can be rebuilt or if you need another option. From there you can decide and be sure to let them know that you want all results printed up on a spec sheet. This ought to give you a reference point on what to do next.



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