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Finally fired it up tonight, but the thing wont stay running.. The only weird code im getting is p0452.. I looked it up and it says something about fuel tank pressure sensor circuit low voltage.. Basically the sensor is seeing no vacuum.. Im not really sure where to start.. Also Allens harness has no plug for evap canister.. Do i need this for the motor to run correctly.. I can get it to run for about 10 seconds and then it dies..
Thanks in advance,
Drew
No, you don't need evap to run the engine. Have you disabled VATS through your PCM?
<div class='quotetop'>QUOTE(kwkenuf @ Nov 12 2006, 10:32 PM) [snapback]73373[/snapback]</div>Quote:
No, you don't need evap to run the engine. Have you disabled VATS through your PCM?
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Sure havent.. that should be it.. ive been plugging away for hours.. Im using the original pcm that came with the motor.. should i still have to do vats??? Thats definetely what it sounds like though.. will run for about 10 seconds and then its like someone turns a light switch off and the motor dies..
10 seconds seems like too long a time for it to be a VATS problem.. In my experience they usually run for 2 seconds or less and then just shut down. However, you did not mention if you did any reprogramming of your PCM and if you have not dealt with the VATS issue, you need to. While you are getting your PCM reprogrammed, that would be the time to delete any emmision related items that may not be necessary for your swap (rear O2s, evap system, etc) and correct for your gear ratio in addition to any performance tuning you'd like to have done.
Ive got hp tuners, but im waiting on the credits to get approved.. just got it ready to crank tonight and my credits wont come in until tomm hopefully, so I will deal with it then.. it ran longer than two seconds, if i played with the throttle some it would run for 10 or 15, but it didnt sputter or anything like that.. it was like someone turned the key off.. Im hoping its VATS.. I guess we will find out tomm.. Thanks for your help!
Kwkenuf, good call.. It was the Vats.. Turned it off and the truck runs fine now.. thanks for the help.. Now just got to finish getting this thing back together and get it out on the street.. Thing sounds mean with no exhaust :)