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b5demon
b5demon, Technician
Category: Jeep
Satisfied Customers: 3718
Experience:  ASE and Chryler/Jeep master technician for 17 years
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I have a 1997 JGCL. 4.0L inline 6. I have a crank no start

Customer Question

I have a 1997 JGCL. 4.0L inline 6. I have a crank no start issue. Electronics fuel battery all good. It's making me crazy not to figure this out. Any help is appreciated.
Submitted: 1 year ago.
Category: Jeep
Expert:  b5demon replied 1 year ago.
Hi Welcome to Just Answer! Have you checked the fuel pressure at the fuel rail and if so what was it?
Customer: replied 1 year ago.
44 psi
Expert:  b5demon replied 1 year ago.
Have you replaced the crankshaft position sensor or distributor pick up yet?
Customer: replied 1 year ago.
Here's what's been replaced so far:
Cam sensor
Crank sensor
plugs
wires
cap
rotor
battery
all sensors around throttle body with the exception to MAPWhen vehicle was running I was getting codes for misfire, bad injectors #3,4. Bad cam/crank sensors. Replaced #3 injector but not #4. Checked all fuses both inside kick panel and under hood. All good. I'm at a loss as to what else I can check or change out.
Expert:  b5demon replied 1 year ago.
Are you getting spark at the spark plugs?
Customer: replied 1 year ago.
yes
Expert:  b5demon replied 1 year ago.
ok have you check checked to see if you are getting pulse at the fuel injectors
Customer: replied 1 year ago.
no I didn't. how do you check for pulse??
Expert:  b5demon replied 1 year ago.
you can unplug one of the electrical connectors from one of the injectors and the use a test light across the two terminals on the wiring harness and crank the engine over the test light should blink when you crank the engine
Customer: replied 1 year ago.
ok will try that when I get back. Thanks! Will let you know....
Expert:  b5demon replied 1 year ago.
no problem let me know if you need any more help