Clutch Pedal Position Sensor?
So after about 2 months of trying everything i could think of, I've finally found what seems to have been causing my terrible idling problems This little bugger right here.
https://cimg8.ibsrv.net/gimg/www.rx7...8bbf85d8bc.jpg https://cimg0.ibsrv.net/gimg/www.rx7...15982fc589.jpg After removing the wire from it, the idle stayed at about 400 RPM or less, and then would die. However, bridging the plug with a paper clip and some electrical tape has kept the idle nice and smooth, even with lights, radio, and AC going full blast. So my question is, would any damage come from just leaving it bridged like that, and maybe bridging it with actual wire later down the line? Or would it be worth it to get a new switch. From what I've read, all this does is tell the Cruise Control that the clutch is pressed down, and nothing else, correct me if I'm wrong there. And of the clutch switches, ever since I did the tranny swap, my car doesn't go through the accelerated start up anymore either. Would that be related to this somehow? I know a lot of people delete that system anyways, but the fact I didn't and it stopped working has me a tad confused, as well as when I first start the car, I have to rev it up once when the idle falls down, or it will stall. After that however, it settles in its normal spot of 750-800 RPM. |
Which switch is this? The one that is depressed when you push the clutch pedal all the way in, or the one that is depressed when you have your foot off the clutch?
Also, what year is your car? Turbo or non turbo? |
Originally Posted by arghx
(Post 12219490)
Which switch is this? The one that is depressed when you push the clutch pedal all the way in, or the one that is depressed when you have your foot off the clutch?
Also, what year is your car? Turbo or non turbo? 1991, Non-turbo. Only thing I noticed is that my cruise control no longer works, I assume because with the bridge it thinks the clutch is always depressed? |
YES, YES. AND YES TO ALL OF YOUR OWN ANSWERS. If im not mistaken this can that switch can effect all of your concerns.
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Originally Posted by littlebit421
(Post 12219595)
YES, YES. AND YES TO ALL OF YOUR OWN ANSWERS. If im not mistaken this can that switch can effect all of your concerns.
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The ONLY cruise control I use is the "hey..notice that cop behind you"..(easy now STYX..eaaassssyyyy!)
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Seems like you've figured it out, but you can do a switch operations test using the CEL in the future. I would recommend buying a new switch. Don't band-aid the problem, repair it properly.
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Originally Posted by Saminya
(Post 12219493)
The one that's depressed when my foot is off the clutch.
1991, Non-turbo. Only thing I noticed is that my cruise control no longer works, I assume because with the bridge it thinks the clutch is always depressed? |
the ECU uses that switch to determine that the engine is idling, also the cruise control.
take it apart, the spring is just a ball point pen spring, so its an easy fix |
Originally Posted by j9fd3s
(Post 12219918)
the ECU uses that switch to determine that the engine is idling, also the cruise control.
take it apart, the spring is just a ball point pen spring, so its an easy fix
Originally Posted by littlebit421
(Post 12219891)
I don't think it would cause any issues but as in NCross said don't rig it, fix it right. If it is not your daily driver I would just park it for a couple weeks until you can put a switch in it that way you don't accidentally burn something else up because it is jumped
Originally Posted by NCross
(Post 12219769)
Seems like you've figured it out, but you can do a switch operations test using the CEL in the future. I would recommend buying a new switch. Don't band-aid the problem, repair it properly.
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Originally Posted by Saminya
(Post 12219948)
How can I test individual switches? Kinda curious now, as I've never really worked with the CELs before. I'll get a new switch over the weekend if I can then.
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Remember that your car will now start in gear without the clutch depressed. So if someone doesn't have the habit of putting it in neutral and/or stepping on the clutch before starting, you could have a problem.
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Originally Posted by NCross
(Post 12220380)
It's been many years since I've done it..., but I think you jumper the test connector near the trailing coil, and... I forget the rest...
Originally Posted by pfsantos
(Post 12220432)
Remember that your car will now start in gear without the clutch depressed. So if someone doesn't have the habit of putting it in neutral and/or stepping on the clutch before starting, you could have a problem.
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Alright, so it wasn't the switch, but it is for sure related to it. New switch came in today, I go and hooked it up along with a new rubber bump on the pedal. And well, now all the old symptoms came back, as you can see in the vid. Anyone got any ideas on where I should look at next?
I got a bit mixed up on in and out due to very little sleep. But in is foot off the pedal, out is pedal all the way down. |
Originally Posted by Saminya
(Post 12221219)
Alright, so it wasn't the switch, but it is for sure related to it. New switch came in today, I go and hooked it up along with a new rubber bump on the pedal. And well, now all the old symptoms came back, as you can see in the vid. Anyone got any ideas on where I should look at next?
I got a bit mixed up on in and out due to very little sleep. But in is foot off the pedal, out is pedal all the way down. https://www.youtube.com/watch?v=n_18SX-AyHQ |
Originally Posted by NCross
(Post 12221310)
Does it do this when turning the steering wheel, coming to a stop, or cutting on the A/C too? If so... your car needs a new BAC.
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So, one last round of opinions before I sacrifice my wallet to the Dorito gods. After taking off the BAC Valve and cleaning it with some carb cleaner, then putting it back on, this was the result.
At first, it's unplugged, then I plug it in, then unplug it again. Is this BAC Valve absolutely shot? |
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