Almost too 400k. Help me get there. - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 04-16-2012
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Almost too 400k. Help me get there.

So I got this ranger with 389,999 miles on it an there was a lot wrong with it but I got it all fixed up now. Wanted to get most of the stuff done before I started posting.

So here's what's left. I disassembled and cleaned the entire top end, iac, throttle body, both intake manifolds, everything. Did spark plugs, wires and replaced PVC valve. It purrs now, but it purrs too much I guess.

It idles at 980-1050 at idle. When I'm driving it stays at about 1500-1800 until I come to a stop then back to 980-1050.

And.. When I filled up today is started leaking from somewhere around the top of the tank. I'm sure it's the filler neck leaking cause it stopped after about a quart leaked out.

And I have P1443 evap control valve low or no flow.

Where do I start?
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Old 04-16-2012
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idle is your IAC. you probably cleaned it with intake cleaner.

leaking is easy to fix, ou'll have to do that yourself.

Evap could be clogged. do a search on how to clean the system.
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Old 04-16-2012
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Old 04-19-2012
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Brand new IAC valve and still same idle. I drove it around town so it could learn, same idle. Unplugged it and it idled a little lower. Checked every vacuum line and unplugged and replugged each one they are all good. The whole PVC system was cleaned and Pcv valve is new. Any ideas.
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Old 04-19-2012
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Evap code was a pinched line
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Old 04-20-2012
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Help please

Ok so I don't know I don't know if it's trying to adjust itself or what but now it idles at about a thousand and when I pop it out of gear while rolling it goes back and forth from 1200-1600 and does settle at 1000 til I stop. While its surging the fuel system goes back and forth from closed loop to open loop drive as well. At least that is what my live data from the scan tool is telling me. At idle it is also throwing the code IAC OVERSPEED and FUEL LEAN BANK 1
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Old 04-21-2012
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So I found some leaks on the intake manifold gasket. I torqued everything to spec but it all came loose, I even found spark plugs loose. So I took everything back apart and reassembled all of it. I put a smidgen of rtv on everything this time as insurance so in the morning I will fire it up and we'll see.
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Old 04-29-2012
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so everything is back together and It seems not to have a vacuum leak anywhere. I sprayed TB cleaner everywhere and it didn't noticeably idle higher anywhere. I mean I thought maybe for a second but its supposed to be really noticable right? I sprayed everything.

I replaced the IAC valve and I still am getting Idle Air Overspeed P1506 but I'm not getting the lean code anymore. Idles at about 1000 at a stop light and when I'm rolling and take it out of gear it stays at anywhere from 1500-2200 RPMs. I'm watching all of this via live data from my Craftsman ScanTool. The STFT is within normal ranges now.

Where do I go from here?

this stuff might help anyone who is listening. The TPS says it is at 17% at idle and 93% when I push the pedal to the floor. It passes all the KOEO and KOER tests along with the continuous memory. If there is any other stuff I can get off the live data that will help anyone smarter then me figure this out please let me know I will post it.



OK so no vacuum leaks. Im gonna get a propane bottle to double check, but I'm pretty sure. Throttle body cleaner isn't finding any and I sprayed that stuff everywhere.

SO... I opened up the throttle body and when its about 1/2 open it has play back and forth. from the outside I can push the shaft in about an 1/8 of an inch, but this is only open as it closes this slack goes away and there is no play when its closed. Will that play affect anything.

Its idling at 900 and won't go down. So thats where its supposed to idle when the power steering/ AC high idle kicks in. GUESS WHAT? when i turn the wheel and hold it it idles at 700.

My AC doesn't kick on, I haven't got that far into fixing this truck up yet, I figured AC last right. Well I jumped that sensor on the AC Can right next to the blower in the engine compartment with the inside on MAX AC. the compressor kicked on and the engin when down to about 700 RPMs. Now I think the AC compressor is broken cause LOL its rattling when the clutch engages and started smoking almost immediately. LOL I don't know how long its been since that thing kicked on. Probably not this decade. LOL

OK, so is whatever makes it idle up a couple hundred RPMs when the AC/Steering is engaged is stuck on right?

Maybe I'm blowing this out of proportion but I think I'm on the verge of getting this thing to idle right. I felt like Dr. Frankenstein when the AC compressor kicked on. I started laughing and my kids in the yard where just staring at me. My 1st Grader rolled her eyes at me and said, "daddy, your weird." They don't know, I'm almost there.
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