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Runs good until it doesn't


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3 replies to this topic

#1 OFFLINE   SUPRDLUX

SUPRDLUX

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Posted 15 April 2018 - 03:32 PM

Runs great until it starts gasping and dies just as if I've closed the EGR valve while it's running fine. I've changed the distributor about a year ago, knock sensor, fuel pump, plugs, wires...Searched and still nothing. EGR code pulled but the EGR valve and solenoid check out. EGR temp sensor showed no resistance so it was replaced with a new one. Still won't do right...

#2 OFFLINE   Manik

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Posted 17 April 2018 - 09:34 AM

I’d replace the EGR control valve. I think I’m having an issue with my EGR as well, but, unsure what as the truck runs fine. I don’t think the EGR is working at all just because it would not pass state inspection in Texas. The upside, 2 more years and its a safety only inspection.


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#3 OFFLINE   adamzan

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Posted 17 April 2018 - 09:44 AM

What about the o2 sensor? Unplug it and see if the truck runs better.



#4 OFFLINE   SUPRDLUX

SUPRDLUX

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Posted 17 April 2018 - 11:43 AM

The EGR valve holds vacuum for at least 30 seconds plus I cleaned it along with the diverter even though both had very little carbon. Started looking at wiring because it's starting to look like the engine was swapped at one point.

Started just physically moving around wiring while it was running trying to replicate the issue - isolated it to the TPS connection because it was responding when I'd mess with it. The male center pin is inverted and the female center pin terminal looks like a shiny penny and the others don't. Gonna replace it with new connectors this evening to see if that resolves the issue. I'll try the O2 sensor thing as well...




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