I have hit a road block with my 5.3 swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Super73 · 03-09-2014, 11:58 AM

Do you have a scanner like hptuners or efilive that will show you sensor info in real time?

I once had a similar issue and saw on the scanner my TPS went haywire.had fuel, had spark but did not fire.

Double check cam sensor as well.. they will run with out it, but it can make it real hard to start with out it.

Also, pull a valve cover and confirm you did not loose a timing chain.

-T- · 03-09-2014, 03:23 PM

Quote:

Originally Posted by Super73

Do you have a scanner like hptuners or efilive that will show you sensor info in real time?

I once had a similar issue and saw on the scanner my TPS went haywire.had fuel, had spark but did not fire.

Double check cam sensor as well.. they will run with out it, but it can make it real hard to start with out it.

Also, pull a valve cover and confirm you did not loose a timing chain.

as stated above, 8 spark plugs did the trick.

ERASER5 · 03-11-2014, 02:20 PM

I say it was because you fed the truck doughnuts. I run lousy after doughnuts too.

-T- · 03-11-2014, 09:21 PM

Quote:

Originally Posted by ERASER5

I say it was because you fed the truck doughnuts. I run lousy after doughnuts too.

Touché ! I like it

03-09-2014, 11:58 AM	#1
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: I have hit a road block with my 5.3 swap Do you have a scanner like hptuners or efilive that will show you sensor info in real time? I once had a similar issue and saw on the scanner my TPS went haywire.had fuel, had spark but did not fire. Double check cam sensor as well.. they will run with out it, but it can make it real hard to start with out it. Also, pull a valve cover and confirm you did not loose a timing chain. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

03-11-2014, 02:20 PM	#3
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: I have hit a road block with my 5.3 swap I say it was because you fed the truck doughnuts. I run lousy after doughnuts too. __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60



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