Jeep 4.7L low idle in drive stopped at light -
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Unread 04-24-2012, 04:21 PM   #1
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1999 WJ 
Join Date: Apr 2012
Location: Altoona, Pennsylvania
Posts: 4
Jeep 4.7L low idle in drive stopped at light

Hello Jeepsters my 99 grand cherokee limited when at operating temperature stopped in drive the idle goes from 750rpm to 400rpm or lower like its going to stall. Tried this in reverse and the rpm stays at 750. Replaced fuel filter, AIC motor, cleaned throttle body, oem spark plugs. Put on snapon computer, misfire #6 so I replaced coil. No more misfires, still the same problem. Could not find no more bad readings. Maybe the TPC? Any suggestions!!! Thanks

shawnsbruno is offline   Reply With Quote

4.7 liter , rough idle , rpm , stalling at stop
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