New starter/ new Flywheel grinding - S-10 Forum

 
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post #1 of 4 Old 10-21-2011, 07:25 AM Thread Starter
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New starter/ new Flywheel grinding

Hey Guys and Gals,
I recently had my '98 S-10 4.3l v6 vin x raised from the dead.
Truck had been sitting for a little over 2 years waiting for my brother to do something with it.
I had my parents replace the engine to get it running again so I could buy it from them. The engine runs beautifully, nice and smooth, no jumps or drops in rpms, and nice and quiet. So started drive home from Ft Lauderdale to Orlando...
Thats where the issues started...
The engine was replaced with another 4.3l from a salvage yard. Problem 1 was difference in mounting bolts for starter, old bolts were metric, engine was drilled for standard. I'm thinking the mechanic unwittingly swapped a vin x and a vin z engine, but both have same flywheel/starters listed at advanced.
Next issue was the guy left some of the tranny bolts out so it was only mounted with 3 instead of 8. After having starter and flywheel eat each other I had them replaced and that was when I found out about the missing bolts.
Current issue is the new starter and flywheel are still grinding and it struggles to turn over. The truck is throwing a bad crankshaft sensor code and I'm hoping that is the underlying issue.
Any Ideas?


'98 S10 4.3l v6 Vortec
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post #2 of 4 Old 10-21-2011, 07:36 AM Thread Starter
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Re: New starter/ new Flywheel grinding

To get a bit more in depth into starting issue, It doesn't grind at first. It engages just fine first few attempts, then starts grinding and chunking. Almost like the flywheel is engaging, but the engine can't figure out which piston to crank on. Eventually it does start though.

'98 S10 4.3l v6 Vortec
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post #3 of 4 Old 10-21-2011, 09:56 AM
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Re: New starter/ new Flywheel grinding

sounds like maybe a shim in the starter might help

1995 S10 LS 4.3 vortec 136k 1" block on back front stock, 4 wheel disc brakes gt4/g80 rear diff

2000 Blazer LT 4.3 Vortec

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post #4 of 4 Old 10-21-2011, 02:09 PM Thread Starter
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Re: New starter/ new Flywheel grinding

I thought that but shimming results in no change. It doesn't seem to be hitting the flywheel, as it doesnt start grinding til 3rd or 4th attempt. The first and second attempts to start are clean, but usually unsuccessful. Will see what happens after I replace the crankshaft position sensor.

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