Search the Community
Showing results for tags 'limp mode'.
Found 1 result
-
Newby HELP! Power down @ 1900 RPM Here's my story bought my 1st Diesel, unknown to me it had a cracked 53 block. Ran good but high idle (about 850 rpm). Bought a used 2000 24valve with 50 k miles on it. Did the re n re myself all went good runs good but @ 1900 RPM powers down, no throttle resonse until the RPM drop below 1900. Replaced fuel pump as it was producing 6-7 PSI. Traded the new engine ecm for the old ecm, starts, runs high idle like old engine for a few seconds then tach stops working, idle drops to a lower RPM and check engine light comes on ....but when test drove didn't power out at 1900 RPM....switched back to newer ECM and runs as normal except still powering out at 1900 RPM which takes it down the road at about 65mph. Accelerating onto freeway is done gradual as long as I don't hit the dreaded 1900 RPM I have power..NOTE it will rev to the redline when in park. Codes?? no check engine light on ...how can I check for codes?? Thanks 2 everyone for your help and suggestions 1999 2500 4x4 short box auto. 53 block 24valve just tossed and replaced with 2000 24valve. BHAF, BD Diesel Flow Max fuel pump, intank pump tossed