Curious Question About TPS
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Curious Question About TPS
Basically, I have tried adjusting my TPS by two methods, resistance and Two-Light. Here is what happened last time so I could compare the two methods.
1) I adjust using resistance setting it to 1k-Ohm.
2) Double check using two-light method, and neither light was on, so I adjust it until half-way between no lights and 2.
3) Check resistance - about 900 Ohms.
4) Drive the car around the block, double check using light method and it's fine.
Now for whatever reason, about a day or two after I do this, my car gets to the point where it won't hold an idle while hot. And eventually, it goes away, but the resistance of the TPS is set lower, and once I got it back from Mazda and it was set to somthing like 630 Ohms.
Mainly, I am just curious to see what is with all the differences. I don't need any links to FC3S or Aaron Cakes site or anything. My concerns really go way beyond anything I can find searching the forums or the list of 10 or so websites I have in my favorites that cover this. I think I am gonna go out right now and change the resistance until the idle holds to see if this is in fact the problem, but as I said, it always happens right after TPS adjustment using either method.
1) I adjust using resistance setting it to 1k-Ohm.
2) Double check using two-light method, and neither light was on, so I adjust it until half-way between no lights and 2.
3) Check resistance - about 900 Ohms.
4) Drive the car around the block, double check using light method and it's fine.
Now for whatever reason, about a day or two after I do this, my car gets to the point where it won't hold an idle while hot. And eventually, it goes away, but the resistance of the TPS is set lower, and once I got it back from Mazda and it was set to somthing like 630 Ohms.
Mainly, I am just curious to see what is with all the differences. I don't need any links to FC3S or Aaron Cakes site or anything. My concerns really go way beyond anything I can find searching the forums or the list of 10 or so websites I have in my favorites that cover this. I think I am gonna go out right now and change the resistance until the idle holds to see if this is in fact the problem, but as I said, it always happens right after TPS adjustment using either method.
Last edited by Crionics; 03-28-03 at 07:30 PM.
#3
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For what it's worth, it had nothing to do with the setting of the idle, which is why I asked the forums. I am well aware of what's in the FSM since I have damn near read it cover to cover.
FYI, the problem seemed to be related to the BAC valve. I swapped the valve, and now it idles.
FYI, the problem seemed to be related to the BAC valve. I swapped the valve, and now it idles.
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