Question about 1997 Jeep Tj

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Spark problem on 97 TJ

I have a 97 Tj 4 cyl. coil checks out fine, tried to run OBD11 diagnostics and got a reading that read " unable to connect to computer " There is no spark coming out of the coil. parked in driveway and that was all she wrote. I can hear the fuel pump activate when I turn the key on and I am getting fuel. Book says to test crank sensor at operating temp. that's a little hard when it wont start. Turns over fine, have a full tank of gas and fuel guage reads empty. All fuses ar good, auto shut down has been replaced. all fluid levels are good. all connections for grounds and any wiring has been cleaned. vehicle has roughly 125,000 miles on it. I've disconnected the cat. conv. and replaced o2 sensor. last tune up was about 5,000 miles ago. not sure where to go from here, on a tight budget at present time. any advice would be appreciated.

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Mine did the very same thing and it turned out to be the crank sensor back by the bellhousing drivers side easy to change.

Posted on Oct 15, 2008

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97 Jeep Wrangler 4 cyl. Turn signals, headlights, parking lights, tail and brake lights, and instrument panel are all out. Only interior light above brake pedal is working. Engine will start.


i think you ment IP cluster backlights dead not warning ligts
that is real the huge parking light structures.
a blown fuse. it is, why not test them ? first.

either cab fuse or the engine bay fuse box.
12vdc on both sides of fuse, is a good fuse, key on.
100% accurate test. no guessing. ever with voltmeter.
(rare exceptions a car with a ground fuse, very rare)
so lets do this the hard way, no fuse tests......

but hark the fsm is free. why not just look at the road map er, schematic, (wiring diagrams)
lets do HL , they are hot all the time, keys lost .

your car is a TJ so having a TJ book is spiffy , no? KEEN?
lets do that. TJ wiring
click TJ
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

now click wiring, following me?
posted this 100 times,., here.

my guess is parks are dead High beams good, right, ?????
yes then go to JUMP 1.
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JUMP1: parks dead.
had lamps is fuse #1, jb (page 134 pdf)
then PDC fuse 4 and 10 (lows and highs)

PDC is engine bay box.
JB is cab box.

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fuse 10 and CB 24 was blown. kills high/low beams
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page 134 makes all this childs play with a meter.
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