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97-02 swap running but throwing codes.


jarfly

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So I got everthing in swaped whole wireing harness, fuel system etc on my 97 to a 02 set up.
I got itrunning but throwing a p0171 and -0174 code, I have read it's a vacuum leak.
I think I have all the vacuum lines hook up. Does the thing on the heater hose have a vaccum line ran to it? Or what eles couldthrow this code.
 


RonD

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So you are running a 70psi fuel pump?
'97 had 45psi pump

PCV valve hoses are a problem on the new engines, 2000 and up, check them carefully especially at the elbows.

Make sure MAF sensor to intake hose/tube is sealed, a leak there is a "vacuum leak" even though you wouldn't think so.
 

jarfly

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yeah im running the pump from the 02, I changed the intake and all that (had the 97 on) seem like it may have clared a bit. Worndering tho, I aint got a filler nexk on this yet that wouldn't cause a bad miss? I know there is some kind of fuel tank pressure sensor. Parts truck only had 72k on it drivein by a old man. Were can I find a good vacuum diagram? Truck ran wornderful be for pulled and swaped.
 
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