blaisetd
NAXJA Forum User
- Location
- Westlake, Louisiana (Southwest)
Yes, i have done extensive searching. I'm having low RPM stumble and poor idle (stalls also). I am also hearing what I think is backfire through the intake at certain RPMs. I have a 1990 DD XJ with a 4.0 and AW4. It has a Rusty's intake, MSD ignition box and a flowmaster. The current mileage is 192K. I rebuilt the engine around 176K. With the rebuild i replaced fuel injectors, oil pump hoses, water pump etc. Replaced CPS recently/before current problem started. Since problem started I’ve replaced fuel filter, cap, wires, plugs, battery, adjusted TPS to 82% input/output (was 77%), checked push rods and gave the valve springs the once over and did a compression check. Compression was between 145 and 155lbs on all cylinders. Do good compression test numbers definitely rule out any valve problems? Unplugging EGR vac lines produces no change in idle. Haven't come up with any vac leaks either. Not sure if its related, but the fuel gauge started reading incorrectly around when my problems started. Anyone got any suggestions, I’m about to throw in the towel and bring it to the stealership.
Thanks in advance blaise
Thanks in advance blaise