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97 s-10 4.3 wont crank...turns good...have spark and fuel...checked timing and changed icm and mag pickup coil

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  • cam6240 Jan 13, 2013

    anybody?

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  • Cars & Trucks Master
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You are saying it cranks but won't start, right ?
Have you checked fuel pressure at the injectors ?
What do the plugs look like ?

Posted on Jan 13, 2013

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Posted on Jan 02, 2017

fraywing
  • 37 Answers

SOURCE: 94 accord v-tec cranks but wont start

Ok, I had this issue with my BMW. DROVE ME NUTS! I couldn't figure it out, and I bought new plugs, coils, etc to no avail.

Finally I replaced the TPS (throttle position sensor) and the CPS (crank/cam-shaft position sensors) and it started right up like a champ! I guess these go out quite frequently, and the dealer loves to charge a fortune to replace them, even though you can get them on ebay for around 40 bucks each.

Hope this helps! Good luck! :)

Posted on May 28, 2009

  • 110 Answers

SOURCE: 1997 honda accord wont start

have you checked the timing belt?

Posted on May 10, 2010

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1 Answer

Car cranks but wont start? No spark. Changed ecm relay no help. Ignition harness is good. No fault codes. Battery is good. changed ignition relay, no help. I think its the ECM but need more info to spend...


Yes, the ECM is the last thing to replace after all other possibilities. No spark could be bad ignition coil, bad Ignition Control Module (controls the coil circuits for spark), bad plug wires, the crank and cam sensors (for ECM to determine spark timing).

Check the ICM -it can be tested at a parts store. If good, check the crank sensor.

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94 camaro wont start...no firefrom the coil has new icm , coil , fuel pump


Check the icm plug with a led testlight for pulse while the engine is cranking. Test the wire connector with the small wires going into the coil for pulse.The v8 has a opti-spark distributor behind the waterpump that is prone to failure. It has the pickup inside it that tells the icm when to spark. If no pulse at icm distributor is bad. If pulse at icm but not at coil, icm or wiring between icm and coil is bad.The coil also needs pos.+ power on 1 terminal to operate. Be SURE to check the security light on the dash. If VATS [vehicle anti theft system] fails its usually within the 2 wires going from the key chip in the ignition tumbler to the body control module. Mine were purple and tan.Trying to start it with the wrong key can put it in lockout mode also. There are bypass modules available online for vats problems or you can even install a resistor in the wire to bypass the keychip part and the door alarms still work.

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1989 cutlas cera wont start its giving me code 12


Code 12 is a "good" code-it means system normal.
Since no codes are stored, check for spark and check for gas-is the fuel pump coming on? You should hear the pump buzz for a couple of seconds when you turn the key to on-it should start and pressurize the lines, then shut off until the engine is cranked-when cranking, pump should be running again. If you don't hear the pump, check if the fuel pump wire at the gas tank connector has power to it when the engine is cranking. If it does and the pump is not working, the pump will need replacing.
If no power, check the fuel pump fuse and relay, under the hood.
If the fuel pump is working, it may be ignition related-check for spark. You need to see a blue snapping spark to know the ignition system is good. If no spark, suspect the ignition control module or the crank position sensor -or the pickup coil, if no crank sensor. The pickup coil will be in the distributor-if you have one. If no distributor, crank position sensor is behind the crankshaft harmonic balancer.
If fuel pump and spark are good, you will need to diagnose the injector circuit.
Post back with what you find.

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1994 CHEVROLET C1500 PICKUP 4.3L V6 vortek cranks no start backfiring thru the Throttle body fuel injection system. The Distributor has a small hairline crack under the reluctor wheel could this be the...


100 psi per cylinder is way too low--should be in the vicinity of 150-165 per cylinder
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Mar 23, 2017 | Cars & Trucks

1 Answer

Wont start


Is it not getting spark, or not getting fuel thru the injectors ?
If its no spark, its usually the ignition module or the pickup in the distributor. You might also check for power at the coil from the EEC relay.

Aug 09, 2013 | 1995 Ford F350

1 Answer

No spark from coil


change your coil.

Aug 24, 2012 | 1988 GMC Jimmy

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92 lumina apv cranks but wont start


As you know this is a fairly simple system.
The pickup coil in the dist signals the module and computer when to fire the plugs and injectors. If you are getting a pulse to the injectors you should be getting a pulse to the ICM.
Is it possible there is a break in the harness to the dist or the ICM ?
And is it possible the distributor is not turning or not in time ?
Can you make and break ground on the new coil to make it spark ?
You may have to go back over everything again and see if you missed something.

Jul 23, 2012 | Cars & Trucks

3 Answers

Engine just died while driving. turns over but wont start. replaced ignition coil. same problem, does not seem to be getting power to the coil. checked fuses also made suer it was getting fuel. 


Change the crankshaft sensor.That is your problem.They can fail anytime and when they do you dont get any power to the ignition coil.Let me know if you are still having problems.I think you will be fine after you have changed the sencor.Good luck m8

Dec 27, 2009 | 1990 Isuzu Pickup

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