PCM P1693 ECM 0234, 1698, 0341, and 1690. 
 

Replaced CPS, new Air Dog Lift pump, new injectors, new penciles. 

 

Some times it has full power then randomly loses power won’t boost over 15-17 psi

What year ttuck?

Is there a runer on it?

It’s a 2001. Not sure what you mean by runner

3 hours ago, Justin Grogg said:

It’s a 2001. Not sure what you mean by runner

 

Probably a typo, Tuner is my guess. 

That would be correct. Tuner.

Oh no tuner. May have been one previously. It has some kind of old BD monitoring system. The fuel pressure sending unit has 3 wires. One actually is tapped into the map sensor. Don’t understand that one. Need to look again to make sure I’m not crazy 

Woild this be the what you have?

151-1085200.pdf

From a quick read it would appear that the MAP is tapped for the 5v reference signal to the added sensor. 

 

What kind of boost pressure do you normally see? I ask because without a tuner or boost fooler once you pass 20 psi the ECM will defuel the engine and set a code, 234.

Boost fooler is not working correctly. 

 

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