so i need to replace and calibrate my tps? Will do asap and keep everyone posted.
Thanks in advance for the advice....
Thanks in advance for the advice....
Engine cuts-out above 2000 RPM - Codes 41 and 52
- Thread starter jessemkiiis
- Start date
You can throw parts at it if you wish...personally, I would test it 1st:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101
The problem could easily be the wiring and not the TPS...check wire continuity between VTA at the TPS and VTA at the ECU.
In addition, measure voltage between VTA and E2 while moving the TB plate from full closed to full open (ignition on). You should get a linear voltage increase as the plate is opened. Many times a TPS will develop a "flat" spot at ~1/3 to 1/2 open...this corresponds to 2500-3000 RPM where the engine spends most of it's time. It will show in the voltage test.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101
The problem could easily be the wiring and not the TPS...check wire continuity between VTA at the TPS and VTA at the ECU.
In addition, measure voltage between VTA and E2 while moving the TB plate from full closed to full open (ignition on). You should get a linear voltage increase as the plate is opened. Many times a TPS will develop a "flat" spot at ~1/3 to 1/2 open...this corresponds to 2500-3000 RPM where the engine spends most of it's time. It will show in the voltage test.
Im going to test this as soon as I get off work tomorrow.
If this is the problem, is it as simple as running new wires to the ecu?
where can I find a wiring schematics for the ecu plug?
Once again thanks for the help
If this is the problem, is it as simple as running new wires to the ecu?
where can I find a wiring schematics for the ecu plug?
Once again thanks for the help
This is for a '90 I do believe:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=50
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=FI&P=50
today I was testing the tps,and checking the vta wire for continuity, buttoned everything up and boom problem solved no more stalling, took a easy trip around the complex, ran like a dream( didnt really push it).
I opened the hood and was checking some things, my tps was unplugged!!!!
I guess it was a bad TPS sensor the whole time. As soon as I get some extra money Ill buy a new one and this should fix my biggest issue...
I opened the hood and was checking some things, my tps was unplugged!!!!
I guess it was a bad TPS sensor the whole time. As soon as I get some extra money Ill buy a new one and this should fix my biggest issue...
jessemkiiis;1434566 said:
Lmao your car ran better with the tps unplugged? get it replaced and let us know how it goes!
I had a good laugh at my own expense afterwards, and my dsm friend was here to boot.
lord knows ill never hear the end from him
lord knows ill never hear the end from him
Just for the record, source of my problem was a faulty throttle position sensor.
thanks everybody for your help
thanks everybody for your help
jessemkiiis;1448911 said:
thats great. did you buy a brand new one or used?
And you calibrated it following the tsrm?
new, and yes she's calibrated.
I thought of getting a used one, but I hate doin the same thing twice
I thought of getting a used one, but I hate doin the same thing twice
did you get it at the stealership? And how much did it run you$??
i need one now lol i was thinkig of getting one used too.. but.. for the same reason.. im hesitating
i need one now lol i was thinkig of getting one used too.. but.. for the same reason.. im hesitating
be sure your reading right code one is for a knock sensor the other is for a knock sensor circuit i had same issue once rpm's go up car will retard your timing look on forums to see how to test sensor's themselves you have two of them if they check fine check the wires near where the sensor is plugged in, there prone to get brittle and break due to the heat off the engine hope that helps.jessemkiiis;1424925 said:
I bought mine at the local autozone, some people may flame me for it but....
it came with like a 2 year warranty and works just the same.
price tag out the door was $65 bucks.
I tried a couple used ones, wish I would have saved the time and effort and just bought it new the first time.
good luck
it came with like a 2 year warranty and works just the same.
price tag out the door was $65 bucks.
I tried a couple used ones, wish I would have saved the time and effort and just bought it new the first time.
good luck