Question about Jeep Grand Cherokee
Why not answer simple questions first?
how many miles ? on this car?
no engine stated 4L or 5.2L???????????????????????
I guess you are working with no scan tool.?
I see now the only fact we have is the single
outside, spark coil is dead. 1 fact.
if its good (simple tests, ohm out the primary and secondary yet>?)
so that means the ECU is cutting spark
In fact I bet the ASD relay is not energizing
or is dropping out while cranking.
if the ASD drops, spark ends, a fact.
if the ASD drops you must scan it or use the key jive test (key on 3 times)
If the ASD drops do not buy a new PCM
the ASD drops for many reasons up to 8.
including VTSS errors. (yup)
1: ckp dead.
2: cmp dead
3: TPS pin 2, throttle angle at 100% or near 5v.
new 1volt is correct , foot off gas pedal.
4: If PCM see's spark is dead, it cuts fuel.with ASD
the ASD logic uses a 3 second rule.
all the above, must be good or it drops
when it drops vast things go off line,
fuel, and spark and more. its for crash protection
no crash and burn as seen on TV, and USA law.
did you pull out the CKP ,with 1 bolt type, and slotted hole?
did you pull out the distributor then not prevent loss of injector timing, oops2.
IS the cluster warning lamp on "SECURITY"
oops VTSS is un happy if yes, it can be bypassed
on this wire. below, VT/YL
Posted on Dec 19, 2016
Can you be more specific as to what your issues are ? When you turn the key to start, does the engine turn over ? If you turn the key and it does not turn over, may want to check your battery. If it does turn over, do you have spark at the plugs ? If yes, may want to check fuel delivery. If not, may want to check for codes in ECM. If nothing happens when you turn the key, may want to check power to the starter. If there is power, then you may have a bad starter. If not, check fuses and then wiring.
Posted on Dec 18, 2016
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Posted on Jan 02, 2017
Check the starter, selinoid, and then the ignition switch if the motor will not turn over. If it turns over without fire check the ignition coil and then the distributor.
Posted on Aug 20, 2008
My 97 Jeep Grand Cherokee was doing the same thing. I changed the TPS ( Throttle Position Sensor) Now it is great goes into overdrive fine. It is really easy to change.
Posted on Feb 11, 2009
try replacing the sockets in the tailights/brake lights. worked for me. $10 each. i had to replace all of mine because just replacing the brake sockets didn't solve the problem on the right side. you can test it by exchanging tail light for brake light socket and if that works you know it is the socket
Posted on Sep 19, 2011
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