1995 K2500 GMC Sierra 5.7 No Start

[pelletman]

Good Morning

 

I have a 1995 GMC 2500 that has always started fine. Yesterday morning, I jumped it, started right up, moved it about 100', turned it off, poured some fresh gas in the tank and now it won't start. It won't kick over with ether either so I am assuming a spark problem. It does almost try to start, rumbles a bit, which increases if I hold the gas pedal down. I took the cap off and cleaned the rotor which was a bit burnt but that didn't seem to make a difference.. There are no codes, I believe it flashes 1 then 2. I assume it is making some spark, just either not at the right time or not enough. Can anyone point me in the right direction?

 

Thanks!

[Friz2]

Fuel pump?

Look in the throttle body as you have a friend turn it over. If fuel is just dribbling out of the injectors, you're not pumping. To further back that up, spray a little starting fluid in the throttle body and give it a try.

[Squirrely]

Also.

 

IAC, and Coolant temp sensor will cause these symptoms.

 

I had the exact same problems, was my IAC. Replaced the temp sensor today just because it was 20 years old.