I agree with you on the air/fuel mixture being thrown out of whack. I'm also wondering now if it's only idling high on initial start up due to the air temperature. I'm sure I read somewhere that there's a sensor that monitors air temp and factors that in. The smaller hoses are wrapped in electrical tape at the clamp points due to rot and tearing. The main hose is so tightly compressed between the manifold and airbox that I can't hear any air being sucked in through the cracks. Obviously this isn't an ignorant attempt at ruling them out of the equation. Just me fooling myself into believing it's not an emediate priority (been restoring this truck for a while). They're definitely high on the list for this month. And while I'm not overly clueless on the intake system in general I am very much a noob when it comes to the ECU, so all of this is good info. I appreciate it.... If nothing else duct tape those hoses/pipes.
You may have touched on a game changer there. I thought that the two-wire connector and temp sensor was purely for the temp gauge. My connector broke, so I ghetto-rigged the wires in there to get the gauge working. It's possible the connection isn't good. Though I doubt the temp gauge would work if both wires weren't snug on the leads, but worth a shot to double check when I get home later (drove the 95 Pathy in today... because I like it better lol).... In some cases this temp sensor is faulty and the car stays in cold start mode.
That's perfect information. The cause and affect seem to align perfectly.. ..The 2 wire unit is for the ECU. There is another single wire unit that is for the gauge. ...
Yeah, definitely need to go aftermarket on these. Dealership wants nearly $300 for everything I need. And I still haven't found the two molded intake hoses that come off the main. Be nice if they just had a ''hoses" sectionYou can get a generic replacement main intake hose off eBay for 15-20 dollars. Courtesy Parts has it for around 50. Mine needs replaced as well. I currently have it wrapped with electrical tape, but I haven't ever had idle problems.
Sorry, I didn't mean to give the impression that I was going to leave it as is. I went to a pick n pull this afternoon and scored new-ish hoses. After replacing them I noticed no change in the 2000 rpm idle. I also cut some connectors from a decent harness to replace my aged temp sensor connectors. Still no change. I then remembered watching a video on TPS adjustment for the Frontier, in which the guy had his TPS screwed just about dead center. After remembering this I thought 'what the hell' and checked mine. It was way off center, so I turned it to center, the RPMs dropped, and the rest is history.TPS adjustment is critical on these engines and you don't just turn it and lock it down. ...