4 Banger idle RPM?
01-13-2010, 01:05 PM
#1
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4 Banger idle RPM?
I know the 4.0L's are supposed to be 750-1K RPM, was wondering if that's where my inline 4 should idle as well? Also, I put in a cluster with a tach and it seems it's reporting my RPM about 1/2 what they really are. The tach gets its readings from the CPS, right?
Last edited by alpine.adrenaline; 01-13-2010 at 04:02 PM.
01-14-2010, 01:10 AM
#2
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Location: Middlesex County CT
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Year: 1993
Model: Cherokee
Engine: 4.0 H.O
The donor jeep you got the cluster from has to be a 4cyl as well cant use a 6cyl tach on a 4cyl engine. It wont read right. The back of the cluster should be marked either 6 or 4 cyl.
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