lunchbox07
New member
Does anybody know where I could possibly get a computer rebuilt for my cherokee???
Computer rebuilt
- Thread starter lunchbox07
- Start date
cherokeechick
New member
Go to the junk yard and take one out of a Cherokee!
lunchbox07
New member
Yep. Guna try that tomorrow. I think Ill still have to get it programed. Right?
cherokeechick
New member
I can't tell you that 100% but it makes sense to me if they are the same to just swap I have a spare I take wheelin with me just in case, I suppose I should look it up
Dragon5126
New member
There is a caveat with "Jeep Computers"... they are not all plug and play. Depending on the year you may have to take the vehicle to the DEALER (not any old mechanic) and pay to have the PCM (computer) Flashed for your particular vehicle. Make sure you get a compatable PCM (Power train Control Module) for your model and year vehicle or it may not take the correct programming necessary for your Jeep. Depending on year and model the PCM controls ignition timing, fuel pressure, emissions, dashboard display, speedometer calibration, tachometer, and even the voltage regulator (which is really stupid in my book!)... Even if they are the same year and model they need to be flashed as vehicle options affect the programming, such as remote entry and factory security system setup, which would prevent you from starting the vehicle...
BTW Rock Auto (rockauto.com) seems to have the least expensive rebuilts I have found but you still need to have the dealer flash them...
BTW Rock Auto (rockauto.com) seems to have the least expensive rebuilts I have found but you still need to have the dealer flash them...
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Dragon5126
New member
Point of info... before you blow the money on a replacement PCM (computer) Go to radio shack and buy some Deoxit. Pull the covers on the PCM (unbend the tabs to do this) and check the solder connections on the board that is part of the larger cover. if you have basic soldering skill, resolder the connections to the CONNECTOR on this board (90% of all problems result from this alone) then treat the connector with the deoxit before putting it back on the rest of the PCM. put the other cover on bend the tabs back in place treat the exterior connectors on the PCM ( the pins that connect to the wiring harness on the jeep) and reinstall the unit... If this doesnt work, make sure to use the deoxit on the replacement unit... this stuff is liquid magic on electronics in severe environments.
Dragon5126
New member
AS An FYI and example I was getting O2 errors on my 98 JGC, that were false... this took care of them. ALSO my alternator output dropped to zero. The PCM contains the voltage regulator. Pulled the alternator and took it to autozone and had it tested ... it was fine... cleaned the connectors and treated with Deoxit... reinstalled cranked right up and put out 13.8 volts per my DMM, and just below 14 per the dash gauge... I have been using this stuff for years, long before Radio Shack carried it.
