Won't Go Over 40 MPH, getting frustrated

[mikestewart395]

Thanks Slartibartfast. A few months back I took my Pathy swimming and after a 2 week dry out it was doing the 2800 rpm thing. Now it has gone to 2200. Something weird though, last night I electronic cleaner sprayed the maf connector, injector connections and cleaned one of the sensors that connects into the side of the tb. I don't have my book with me, I can't name the sensor ATM. When I turned the key it started fast, like I snapped my fingers and bam! No spinning mor a couple seconds then firing. Anyway, test drove it. It got to 65 mph, I was like hell yea ! Then it started loping again until I dropped it to 2200. It's was fun for about 10 seconds. Tomorrow is payday so I'll go to advanced and buy 2 new injectors. Only one is bad, but just like headlights, change one might as well change both, the other will fail too.

[Slartibartfast]

I'm not sure what to make of those symptoms... hopefully the new injectors fix it, but it's starting to sound more like a wiring issue to me, especially with the fact that it started after getting wet.

[mikestewart395]

Yea, wiring is something I don't want to chase down, hopefully its just a part.

 

[SkiMachine]

By chance did the ECM or its connectors get wet? It is under the front passenger seat thus is vulnerable to being flooded out. Like dropping a cellphone in the water, it could work ok during/immediately after but then start failing a few weeks later as the corrosion (both connectors and PCB) sets in. Just a guess though.

[Slartibartfast]

^^True that. IIRC My1Path had an M30 ECU that had been dunked once corrode to uselessness in dry storage.

[mikestewart395]

By chance did the ECM or its connectors get wet? It is under the front passenger seat thus is vulnerable to being flooded out. Like dropping a cellphone in the water, it could work ok during/immediately after but then start failing a few weeks later as the corrosion (both connectors and PCB) sets in. Just a guess though.

 

 

Yea, the cab was flooded. I bought a ECM from Ebay . The last one was fried. Wouldn't start the engine.All connections since have been cleaned and Electric Greased.

[mikestewart395]

I got it! After taking one injector out of the circuit at a time I found the bad injector. I clipped one wire and it wouldn't start. I soldered it back on and it started. I clipped wire from second injector and engine started and ran exactly the same. So finally the mystery is solved. Bad bad bad injector. I will get that replaced pronto.