Rolls over, no start

buddha131

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Nov 20, 2011
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Make
GMC
Model
Sierra C1500
Year
1988
Miles
190,000
Engine
350
Driving home at 30 mph truck just stopped running. Fuel pump was humming, changed fuel filter, sprayed starting fluid in the throttle body. No sign of spark. Replaced coil and electronic ignition module. Still not starting, Need help?
 

billr

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Have you checked for spark at the coil? Have you removed the dizzy cap to see if the dizzy/rotor is turning as you crank? You have changed the coil and ICM, but the pick-up coil/reluctor is also part of that system and may need attention. Before throwing any more parts at it, though we should get you to do some electrical checks at the ICM connectors. Do you have an electrical multimeter?
 

billr

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There will be several different volts and ohms ranges needed; but yes, I expect the pick-up coil in the dizzy should be about 2000 ohms. We can get the specific number, and details of various tests. First, though, do those easy things, make sure the dizzy is turning and that there is no spark right at the coil terminal.
 

jigfeett

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Those years of chevy had issues with the caps a simple tuneup is where to start unless you know all is good. Cap rotor, plugs, wires.
Post your fix for us
 

nickb2

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OMG, which I think means oh my god.

You actually have those books, wow, and you took time to picture them,

well, I just want to say, what a great start to this new year.

I am, and repeat, I am really impressed. What a gift.

:)
 

nickb2

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if I had to choose between a vintage playboy and this, yeah, this is my head turner.

My sister used to read some rumour magazines, I would be reading hot rod magazine

;):bat::fixed:
 

nickb2

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ok, have to say it, my mom thought I had porn mags under my bed, nope, I was looking at that cool new grand national turbo. ;)

Never had one, and when I first went to see one.

Well santa never came through. :(:eek:
 

buddha131

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Those years of chevy had issues with the caps a simple tuneup is where to start unless you know all is good. Cap rotor, plugs, wires.
Post your fix for us
All that was done 6 months ago, rotor does turn.
 

billr

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Did you check for spark at the coil itself?
 

Mobile Dan

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Location
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Is the coil inside the cap?
Use the schematic (third one) to check out wires at distributor and cap.
 

buddha131

Newbie
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Module under the distributor cap was bad, corroded, problem fixed. Thanks bat auto guys! The esc module I put on, fixed the Hi idle at start up. My front brakes said thank you.
 

billr

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"Replaced coil and electronic ignition module."

That is from the original post. Was the replacement ICM bad?
 
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