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92 c1500 no fuel no spark no start


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tracymrhd
Novice

Jan 11, 2017, 9:23 AM

Post #1 of 15 (375 views)
92 c1500 no fuel no spark no start Sign In

 
This truck is starting to drive me crazy. It is a 92 c1500 4.3 liter no start no fuel no start. I have replaced the fuel pump, fuel pump relay, distributor assembly. have power going into distributor but no spark goin to spark plugs. also have jump the oil pressure switch and still no start. have power to fuel pump relay and ecm signal at fuel pump relay.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Jan 11, 2017, 10:45 AM

Post #2 of 15 (351 views)
Re: 92 c1500 no fuel no spark no start Sign In

Does the ignition rotor spin when you are cranking the engine?





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tracymrhd
Novice

Jan 11, 2017, 10:47 AM

Post #3 of 15 (347 views)
Re: 92 c1500 no fuel no spark no start Sign In

yes I have compression so I know timing chain is good or could the cam, or cam gear break I will have to check when I get home


kev2
Veteran
kev2 profile image

Jan 11, 2017, 11:25 AM

Post #4 of 15 (338 views)
Re: 92 c1500 no fuel no spark no start Sign In

pink wire at coil 12v ?
red and wht wire at inj 12v?
If those are good suspect ICM.


tracymrhd
Novice

Jan 11, 2017, 12:35 PM

Post #5 of 15 (327 views)
Re: 92 c1500 no fuel no spark no start Sign In

Ignition control module? where is that located?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 11, 2017, 12:40 PM

Post #6 of 15 (327 views)
Re: 92 c1500 no fuel no spark no start Sign In

What do you mean by "no fuel"? No fuel pressure? no injector pulse?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tracymrhd
Novice

Jan 11, 2017, 1:17 PM

Post #7 of 15 (323 views)
Re: 92 c1500 no fuel no spark no start Sign In

nothing no injector pulse, no spark to spark plugs


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 11, 2017, 1:20 PM

Post #8 of 15 (316 views)
Re: 92 c1500 no fuel no spark no start Sign In

You should check codes but I would suspect a Crank Sensor circuit problem.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tracymrhd
Novice

Jan 11, 2017, 1:30 PM

Post #9 of 15 (311 views)
Re: 92 c1500 no fuel no spark no start Sign In

never thot of that. I don't have a scanner that will do obd1


tracymrhd
Novice

Jan 11, 2017, 1:31 PM

Post #10 of 15 (309 views)
Re: 92 c1500 no fuel no spark no start Sign In

did they use a crankshaft sensor back then?


Hammer Time
Ultimate Carjunky / Moderator
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Jan 11, 2017, 1:36 PM

Post #11 of 15 (305 views)
Re: 92 c1500 no fuel no spark no start Sign In

They didn't call it a Crank Sensor but the pick-up coil in the distributor did the same job as a Crank Sensor.

Before doing that you need to confirm power supply to the coil and injectors and make sure your check engine light comes on for bulb check when the key is first turned on.

When you hook up you scan tool look for an RPM signal when cranking.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



(This post was edited by Hammer Time on Jan 11, 2017, 1:36 PM)


tracymrhd
Novice

Jan 11, 2017, 1:47 PM

Post #12 of 15 (298 views)
Re: 92 c1500 no fuel no spark no start Sign In

how do I flash codes on the dash. I don't have a scan tool that will hook up to this vehicle.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 11, 2017, 2:01 PM

Post #13 of 15 (291 views)
Re: 92 c1500 no fuel no spark no start Sign In

Jump A and B in the diagnostic connector.

I don't know if a truck that old even monitors that circuit.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



kev2
Veteran
kev2 profile image

Jan 11, 2017, 2:21 PM

Post #14 of 15 (276 views)
Re: 92 c1500 no fuel no spark no start Sign In

you will need to test something suggested....
Does dist rotor spin?
is there 12v on pink wire at coil?
is there 12v at injectors red and wht wire.
As suggested CODES....
All easy fast simple tests....and FREE


tracymrhd
Novice

Jan 11, 2017, 2:50 PM

Post #15 of 15 (263 views)
Re: 92 c1500 no fuel no spark no start Sign In

thanks for all the info. I will check this stuff out tonight.






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