No crank help
 

69 c10 2wd w/ 5.3 & th350...after everything was hooked up...i have no cranking of engine....purple wire at ignition does get power when turning switch to crank...but nothing at the starter wire? Also brake light on gauges turns on when trying to start engine... All fuses good are good....any suggestions?

Re: No crank help
 

Wasn't in park completely...cranking and starting now.......but doesn't stay running....now what?....eng. Light comes on and stays on while it starts and fires up...

Re: No crank help
 

Do you have a way to pull the codes?

Re: No crank help
 

no...well...i have a diablo sport tuner...can that pull them without a vin?...

Re: No crank help
 

Did you have the VATS disabled in the ECM?

Re: No crank help
 

It was supposed to...but the way things have gone with these guys...i wouldn't be surprised if the ecm wasn't done correctly. Any way to tell for sure once i get a scanner?...

Re: No crank help
 

Don't know about a scanner, but it is exhibiting what motors do when the VATS isn't deleted.

Before I pulled the ECM and had the VATS checked, I'd make sure I had a steady pressure on the fuel rail and make sure it isn't simply running out of fuel.

Re: No crank help
 

By just disconnecting fuel line?...

Re: No crank help
 

There are codes for the passlock type VATS. Try your scanner and see what comes up

Re: No crank help
 

I'd put a gauge on the schrader valve on the fuel rail and watch what happens when you try to start it. I should stay pretty solid at about 57 or 58 psi. (IIRC) at all times.

If you don't have a fuel pressure gauge, most Autozones have them in their tool loan program

Re: No crank help
 

I will try that first....thank you.

Re: No crank help
 

Just to clear up a little confusion.

Assuming that you had the VATS deleted, it could be exhibiting the same symptoms if you were not pushing enough fuel to the rail and the pressure drooped out - bad pump, stuck regulator, whatever.

I don't know if VATS turns off the fuel pump as part of the start denial - but I'd think it would. so you might want to put a test light to the fuel pump too and make sure it is continuously powered and it isn't VATS turning off the fuel.

Re: No crank help
 

Great info sir...i will follow your advice first before i start with ecm.

Re: No crank help
 

Ok I'm confused. You said it wouldnt stay running, then said that the check engine light is on when it runs? I thought you meant you could keep it running? How long is it running? If never more than a couple of seconds then I'd say it is VATS.

Re: No crank help
 

yes...it only stays on for a second or 2...the eng. Light is on when switch is turned on, cranking...and for the second it is on...

Re: No crank help
 

That sounds EXACTLY like VATS hasnt been tuned out......

Re: No crank help
 

Does the VATS trick work?...Read about swapping ECM with a truck and putting mine in place while turning ignition on and off....does this work?...

Re: No crank help
 

Anyone try this?...

Re: No crank help
 

You have to have a running truck with the same computer from what I've seen, but never tried it myself.

Re: No crank help
 

Only cause I'm not in a rush and about done with project...I will track a truck down and try this before sending ECM off.