Question about 2000 Jeep Grand Cherokee

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Cranks but no spark/start 4.7 v8 G.cherokee

Just replaced head gasket put back together no spark/start  does crank..    checked all fuses, relays,most obvious usual things     anti theft????    unfortunately i dont have a k-13 key for my snap on solace scanner  no can communicate with ecm....

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  • yadayada
    yadayada May 11, 2010

    Recheck your work, you most likely left something unplugged, recheck all the connectors, is it no spark?

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A COMMON PROBLEM I'VE SEEN MANY TIMES IS THE CRANK SENSOR DISRUPTING COMMUNICATION WITH PCM. UNPLUG THE CRANK SENSOR AND CHECK FOR RESPONSE OF PCM. IF COMMUNICATION IS NOW POSSIBLE YOU HAVE A BAD CRANK SENSOR. IT'S A PROBLEM I'VE SEEN NUMEROUS TIMES. DOUBLE CHECK YOUR TIMING.

Posted on Sep 27, 2008

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My 1998 Jeep grand Cherokee can crank but will not start


If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If you have spark everywhere, check fuel pressure and fuel injector pulse.
Can you check for applicable trouble codes?

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2000 Jeep Cherokee 4.0 drove it in for overheating. It failed the block test ,pulled the cly head found it to be cracked. Replaced it with a reman head put it back together and tried to start it I have...


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2000 jeep cherokee sport cranks but no sparks all fuses good what could it be


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Won`t star


Hello Sir:

There are 2 Problems that can prevent your car from starting:

#1) Make Sure your getting Fuel

#2) And Check to see if you are getting Spark to your Spark Plugs,By pulling off 1-Spark Plug wire and take plug out also, Put spark plug back in the Wire. Have someone crank the engine over,and see if theres Spark at the Spark Plug.

#3) If your car is'nt even cranking over,then the problem is in either your Ignition switch,starter relay,starter,or it can be as simple as a relay or Fuse, check in your fuse box inside,to make sure ALL fuses are good.

#4) Then under your hood you should see a plastic Cover Fuse and Relay Block as well, Check these also,Mainly if its labeled Crank,or starter. Also check your Starter relay. they are a Larger componet in the box under your hood.

#5) to check this relay you'll need a OHM meter to check for resistance. also check the EMC Fuses or Relays.

#6) if no fuel check fuel pump fuse and replace fuel filter 1st.

#7) If no Spark make check your Coils.I'm sure if you follow these tests you'll locate your problem.

PLEASE let me know how my Solution helped you by Voting for the Quality of my Solution./

Thanks for using FixYa From: d-Hubbs

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Car turns over but does not start. Battery good


If it over heated, could have bad head gasket's, fill radiator with water, crank engine with radiator cap off, if water is push out of radiator while cranking, bad head gaskets', also remove spark plug's, crank engine if any water, bad head gasket, also when spark plug's removed, check for any water on them.If there is any water on plug's, bad head gasket, also could try doing a cylinder compression test, if bad compression, head gasket, no compression, wont start that way.

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2001 jeep Grand Cherokee fuel injectors


check the injectors on that bank for pulses.. a regular 12v text light will do it should flash when cranking... its very possible that the crank sensor or camshaft sensor on the replacement engine is bad and giving you all the problems you have now.. are you using the original injectors? if you have injector pulses then check the coil for pulses the same way.. btw make sure you have 12v to them even before cranking engine could be a bad asd relay..wet plugs on one bank would also indicate a possible leaking injector and basicly draing the fuel starving the oposite bank for fuel.. to verify that the rail must be lifted by removing all 4 bolts make sure the clips hold the injectors firmly and turn the key to run but dont crank it then look for fuel leakin from bottom of injector(s) any drips is a bad injector..

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you may have bent the flex plate ring.so it might be to far away from the crank sensor air gap.

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a bad crank sensor or dist pickup plate can cause this.... check the fuses in the fuse block under the hood for any blown ..... a bad auto shut down relay may cause it .....try putting a test light on the green and orange wire and see if it lights up when you try to crank it

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