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post #441 of 459 (permalink) Old 10-27-2015, 08:07 AM
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This is a VSS speed sensor that came out of the top of my 94 rear end. I started getting hard shifts from 1st-2nd and 2nd-3rd so I searched around and think its the sensor. The truck also surges a little when Im applying constant gas and staying at a constant speed. I ordered a replacement one and it was different than this one. Also, it made my problem worse. The speedo was wicked jumpy and sometimes would stay reading zero even if I was doing 30+ mph. Im thinking the previous owner had the same problem and found a different application that worked, but now I don't know which one this is to replace it. This is a problem since the OEM VSS isn't an option now that I know it wont work. The VSS pictured has 10J3 stamped on it but I haven't found anything by searching here and online. I disconnected the battery to reset the computer and the problem went away and this sensor works, for now.

Anyone know what this sensor is? I have a stock ford rear end, and Im thinking this VSS goes to something else but happens to work in my truck. thank you.

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post #442 of 459 (permalink) Old 10-27-2015, 05:46 PM
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Considering I spent some time under my 92, that looks like the right sensor to me, since I had to pull mine twice because I couldn't get the fill plug out and after the first time hauled a tractor and found out the hard way that the vent line was stopped up.

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post #443 of 459 (permalink) Old 10-27-2015, 05:57 PM
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Thanks, it works fine now but both times i ordered a replacement one (from two different shops) they were a little different (thicker bracket that the bolt goes through) and neither worked.
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post #444 of 459 (permalink) Old 10-27-2015, 07:24 PM
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what is this sensor?

hey guys, on my 99 explorer block it is missing the hole for the sensor that sits directly behind the intake. What is it and what is its purpose? and can it be bypassed? Thanks!

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post #445 of 459 (permalink) Old 10-27-2015, 08:32 PM
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Thats likely the Knock sensor. Later model engines did not have the knock sensor. You can see it here on my 302.




If your block doesnt have a provision for it, do some searching. You may be able to just tape it up out of the way and leave it un-connected. But search to be sure.

Heres a close up view of the sensor.

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post #446 of 459 (permalink) Old 10-27-2015, 08:37 PM
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Thats exactly it! Thanks! I'll do more research on it and to bypassing all my EGR junk and smog pump

88 351 xlt- long gone
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post #447 of 459 (permalink) Old 10-30-2015, 01:49 PM
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Looks like this has been busted for a while...

Hey all,

I was replacing my headgasket a few days ago and during reassembly I noticed this little bugger has a broken vacuum line.






two questions:
1. What is it?

2. What will change if I fix it?

1991 XLT 302 E4OD 189,XXX miles.

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post #448 of 459 (permalink) Old 10-30-2015, 02:56 PM
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Originally Posted by RacersJunkyard View Post
Hey all,

I was replacing my headgasket a few days ago and during reassembly I noticed this little bugger has a broken vacuum line.






two questions:
1. What is it?

2. What will change if I fix it?

Its a vapor purge solenoid. Being broke it will cause a vacuum leak and well your gas vapors won't be purged. What is this part?

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post #449 of 459 (permalink) Old 10-30-2015, 03:10 PM
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as scatt said that is the Canister purge solenoid. It serves to take the vapors from the gas tank via the charcoal canister and put them into the intake via the throttle body.

Even broken the only thing it will do is emit a tiny bit of gas vapor, but it won't cause any vacuum issues. the part of the line that is broken running up to it is a fuel resistant hose.
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post #450 of 459 (permalink) Old 10-30-2015, 03:18 PM
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Good to know, Thanks all.

1991 XLT 302 E4OD 189,XXX miles.

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post #451 of 459 (permalink) Old 11-30-2015, 01:15 AM
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un-stuck. nobody's using it anymore and I'm not going to try and merge every "what's this" thread that pops up every week.

"When life throws you a curve... LEAN INTO IT!"

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post #452 of 459 (permalink) Old 11-30-2015, 10:11 AM
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Originally Posted by BikerPepe` View Post
un-stuck. nobody's using it anymore and I'm not going to try and merge every "what's this" thread that pops up every week.
Geez! you were doing that Pepe? Sounds like a pain in the butt.
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post #453 of 459 (permalink) Old 11-30-2015, 10:57 AM
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un-stuck. nobody's using it anymore and I'm not going to try and merge every "what's this" thread that pops up every week.
I'm not sure I ever understood the value of it. I wouldn't waste my time going through 23 thread pages to see if someone else had asked. Or to follow a link to Supermotors, half the time it never worked right for me.

It would have been more useful to have exploded views of stuff with a legend.

"ok...here's my engine.....there's my part....it's #42.....knuder valve".

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post #454 of 459 (permalink) Old 11-30-2015, 01:23 PM
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Quote:
Originally Posted by RacersJunkyard View Post
Geez! you were doing that Pepe? Sounds like a pain in the butt.
Did it probably 5 times and it got old real fast.

Quote:
Originally Posted by j. r. Nice View Post
I'm not sure I ever understood the value of it. I wouldn't waste my time going through 23 thread pages to see if someone else had asked. Or to follow a link to Supermotors, half the time it never worked right for me.

It would have been more useful to have exploded views of stuff with a legend.

"ok...here's my engine.....there's my part....it's #42.....knuder valve".
Totally agree with you. Nobody has time, especially when trying to diagnose a real world problem.... to crawl through pages and pages of pictures, hoping they might see or recognize the one part they want to know about.

"When life throws you a curve... LEAN INTO IT!"

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post #455 of 459 (permalink) Old 03-17-2017, 01:16 AM
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I've got one for the experts: I found this 2-wire (yellow/green & white/red) connector tucked away near the oil cap. I couldn't come up with anything it should mate to. It's probably an option I don't have, but it was very gunked up inside (photos are after cleaning) and should be covered or taped up if not needed. Any idea what it is?



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post #456 of 459 (permalink) Old 03-17-2017, 02:43 PM
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Originally Posted by fodder View Post
I've got one for the experts: I found this 2-wire (yellow/green & white/red) connector tucked away near the oil cap. I couldn't come up with anything it should mate to. It's probably an option I don't have, but it was very gunked up inside (photos are after cleaning) and should be covered or taped up if not needed. Any idea what it is?



Power steering pressure switch plug. switch was deleted from 94-96 trucks
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post #457 of 459 (permalink) Old 03-17-2017, 03:54 PM
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Originally Posted by Teal94 View Post
Power steering pressure switch plug. switch was deleted from 94-96 trucks
Yep, that's it! It was easy to find pictures confirming it once I had a name to search by. :)

Some info says the switch is only there for manuals, which would explain my connector being unused, while other info says it was also on some autos, but is often abandoned when upgrading PS lines to one without the switch.
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post #458 of 459 (permalink) Old 03-18-2017, 11:49 AM
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Yo,
Power Steering Pressure Switch (5.0L Without E4OD Only); The Power Steering Pressure Switch signals the EEC IV Module when power steering pressure exceeds 350 psi ±50. The engine then increases idle speed to compensate for the additional load. It appears the switch was deleted from the 94through 96 Bronco model years. It only shows up in the diagrams until 93. the switch is directly above the steering box.
EEC IV Legend by Ryan M
Pin 24 is PSPS Input to EEC IV Module, Yellow/Light Green
Pin 26 is V-REF +5 volts DC, Brown/ White
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post #459 of 459 (permalink) Old 03-20-2017, 12:34 PM
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On a truck that did not have the pressure switch, could you use the connector with a relay to create a high idle switch?

94' 302, e4od, 1356m, Manual hubs 33x12.5 tires. Fiberworx 4.5 inch flared fiberglass fenders/bedsides. Sag pump/4blt steering box swap in progress
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