93 Chevy S10 Blazer 4wd W vin Vortec CPI. Turns over has fuel, and spark, wont start. New TPS, IAC, Knock sensor, wires, plugs, Cap and Rotor. It did this the other day so I manually checked the flash codes and got code 35. So I replaced the IAC and it started right up and ran fine. Went back out the next day started warmed it up and drove it a few miles then home again. went back out twenty min later to drive it now won't start again. Checked the Code again. Code 35 is back? (was gone after I replaced the IAC) the Iac is only 24hr old. I took it out and watched it move freely when the ignition was turned to on position. I don't think it's the IAC what else could it be? Thanks in advance.

SOURCE: will not hold idle when in drive or reverse 1991 S10 Blazer

Well Boys
If I tell you how to fix the S10 Problem are you going to send me $10.00Regard.

Regards,

SOURCE: 89 s10 blazer no spark

There is no test for module in distributor, but they often cause this kind of problem. Also while in there, check the pickup coil wires to make sure they are intact.

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If the coolant level is o/k check level indicator sensor which should be on the rad. It is a one wire sensor. Hope this helps. Moe

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Intake manifold gasket. Leaking where intake meets head.

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Try using a good fuel line/injector cleaner Seafoam is a good one. If this does not help you may have tone or more clogged injectors. Clean these out and you should be good to go. tTo see Seafoam in action goto you tube type Seafoam into the search box.