hamilton71801

I've been getting the 0237 (low map sensor voltage) code on and off for about a month now. I've replaced the map sensor and cleaned the IAT. All was good until today when it threw the code and went into limp mode for couple of miles but now the CEL is gone (I haven't cleared it with the scanner yet). All gauge readings are fine and this is running without the SC on, just straight injectors. Now my question, what is the likelyhood it could be the boost fooler? Any other ideas?

vzdude

I've seen 2 go bad on the same truck. Actually, it still sets the code from time to time, but not a check engine light. He has his wastegate bypassed.

hamilton71801

Is there a way to diagnos the thing or just put a new one on and see what happens?

vzdude

Without a scan tool its gonna be hard. Do you have a scan tool or a lab scope? With a lab scope you can watch the voltage graph just like with a scan tool. 'bout the only way to know what the ECM is seeing.

hamilton71801

Nah, nothing fancy like that just a Superchips with the code reader. I think I'll just see if it keeps doing it and if it becomes a real problem, I'll put another $50 fooler on it. Heck it would cost me $75 to take it to a mechanic and I'm scared of the ones around here.

vzdude

Yeah, I am just SOOOO glad I have the knowhow, and access to scanners and the internet! Sometimes the cheapest thing is to throw parts at it!