Question about 1989 Jeep Cherokee

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Engine will not fire.no spark at coil. shouldnt you get fuel with key turned on.

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  • boo_in_wa Aug 27, 2008

    1992 Cherokee 4.0 automatic. Stalled at stop light. Would not restart. Towed home. Have power to and across all master fuses. Replaced ASD relay and swapped others sequentially. Have fuel pressure at rail. No spark at plugs, cap, coil. All dash, headlight, radio, fan etc. work just fine.

    Changed CSP (crank) still no spark.

    Before I take a hammer to this beast ... can anyone help? It's a pretty Jeep ... otherwise it would be parted out already. 138K is mileage and has tilt wheel.

  • jeepjerks Sep 12, 2008

    I have the same problem. My jeep will not spark. I changed the plugs, coil. rotor, wires, and even the battery. But nothing, someone told me it could be the computer. I dont know and I dont want to spend a couple hundred on a new computer.



    Some one please help me, I love my jeep and I put alot of time and money into to make it an offraod beast.

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Change the coil and see if you get somewhere with it.

Posted on Aug 27, 2008

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74 malibu. Starts but wont stay running. New starter, New Fuses, New distributor. Spark plugs are firing and fuel is getting to engine.


It seems like you have overlooked something.
If you have spark and fuel, it should keep running.
Sometimes the key switch is faulty and you loose spark when you turn the key back to the run position.
You should be able to run a jumper wire to the coil and crank the engine over to see if you are loosing power to the coil.

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What could cause a1991 suzuki samurai to have no fire from a new coil?


no spark from coil directly?
is the cam turning, is the dizzy rotor spinning. ????

check all fuses first. Ig-coil, FI and dome.
then using diagnostic jumper wire or fuse, (as approp)
crank engine look for code 41 o 42.!!!

USA cars , answers only
our cars are all EFI that year.
no engine swaps to Suzuki G16A/B sidekick or tracker engines.!
1: engine cranks
2: no spark
3: The ECu makes spark
the CMP sensor in the DIzzy , (never fails if rotor turns, does rotor turn, if not cam belt igored and now snapped.)
the cam turns. the CMP fires. the ECU takes this CMP signal
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that is it.
the ECU will tell you when the CMP dies or the Ignitor fails
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1: key on
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Getting gas and fire but just turnes over like there is no fire at all


which engine, they work different.
you saw gas where.?
you saw fuel where??
you saw something turn, what?
try this.
it cranks robustly (250RPM = robust)?
the engines cranks over, (i see pulley spin fast on crank)?
the engine fails to start and to RUN (sustained).?
you lost spark to 4 or 6 clingers, all are dead spark?
so you place the diagnostic jumper wire and crank for
5seconds
and release the key,
got DTC error codes, bingo.
if not bad spark is bad coil or bad ignitor that drives said coil.

next is fueling but above is all first.
fuel is always LAST. (ECU cuts fuel for many reasons) ask.

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1990chevy suburban 2500 350 died while driving and won't restart I can hear the fuel pump turn on I have changed the fuel filter and still nothing what's next


check for spark, no spark, no fire engine wont run, possible bad ignition coil, wire from coil to distributor cap, no power to ignition coil from ignition switch (rare) wire broken to ignition coil (even rarer)

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I have a 1988 chevy truck and it will not start now, i shorted out the starter and it burned the negative cable wire so i unhooked it and replaced the starter solenoid and replaced the egnition module,...


Is the engine turning over and just not starting? Go back to basics, you need fuel, fire, compression, and proper timing to get it to start. Check the fuel pump, do you hear it run when you turn the key on? Do you have fuel pressure, if so check for spark at the spark plugs, if you have spark try turning the engine over and have a buddy spray some starting fluid in the throttle body, if it tries to start then you have a fuel problem. If no fire check dist module, ign coil and coil wire.

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firing_order-1.jpg Leads for distributor cap should be connected as illustrated.
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LH - Left Hand side of engine, when viewed from rear.
firing_order-2.jpg

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Car will not start.Engine turns over but spark plugs willnot fire


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It has steadily been getting harder to fire over---Today it won't fire --in past year ,I have changed fuel pump,filter,coil,crank & camshaft sensor,plugs,wires-It has fuel in the line (it squirts out...


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When you turn your key to the ON position, you should hear your fuel pump pressurize for a few seconds.

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