OK, I'm stumped right now. I just got the ms2 v3.0 in my car which has a 4age with silvertop ITBs. I'm trying to calibrate the sensors and all of them have gone fine except the tps. It just climbs, I tried to check if I had it wired backwards, but no difference. It started raining so I didn't get further than that. It is a 4 wire tps, but only 5v, sensor ground and tps signal wires are hooked up. Wiring harness is custom made, and runs through a weatherpack 22pin bulkhead connector.
I probably missed something small, but darned if I know what. Thanks.
I might have just answered my own question. I tested the tps I have and it just acts like a switch, not linear like it should be. So I have a new tps on the way. I'll update when it gets here.
Ms2 climbing tps 4age
Moderators: jsmcortina, muythaibxr
-
suberimakuri
- Master MS/Extra'er
- Posts: 632
- Joined: Sun May 02, 2004 2:16 pm
- Location: Auckland, NZ
- Contact:
Re: Ms2 climbing tps 4age
Hopefully just faulty TPS.
Off memory...
The IDLE pin on the TPS works like a switch, it connects to earth when TPS is near closed.
The sensor(name?) pin on the TPS is variable up to about 5k I think, when measured to earth.
If have earth and 5v backwards then TPS sensor pin reads backwards (resistance decreases with throttle opening).
Off memory...
The IDLE pin on the TPS works like a switch, it connects to earth when TPS is near closed.
The sensor(name?) pin on the TPS is variable up to about 5k I think, when measured to earth.
If have earth and 5v backwards then TPS sensor pin reads backwards (resistance decreases with throttle opening).
Re: Ms2 climbing tps 4age
It takes more than 2 wires to make a TPS work.
You hook 5v and ground across the resistor and the wiper is your signal (3 wires).
You hook 5v and ground across the resistor and the wiper is your signal (3 wires).
Correctly identify your MS ecu here
Read the Do's and Don'ts to avoid the common pitfalls before starting your install or asking for help
Use only these manuals other manuals may cause brain damage or worse.
Read the Do's and Don'ts to avoid the common pitfalls before starting your install or asking for help
Use only these manuals other manuals may cause brain damage or worse.
Re: Ms2 climbing tps 4age
Measure the resistance across all combinations of the 4 pins with the throttle around 50%. The switch is the one that has no connectivity, while the wiper will be about the same resistance to either of the other pins, and about half of what the resistance is across the end pins.
Close the throttle; the GND pin is the one with the lowest resistance to the wiper pin.
If that gives you no useful results, then yeah - you may have a busted TPS.
Close the throttle; the GND pin is the one with the lowest resistance to the wiper pin.
If that gives you no useful results, then yeah - you may have a busted TPS.
Temporarily shut down - back soon!
QuadraMAP Sensor Module -- PWM-to-Stepper Controller -- Dual Coil Driver
Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
QuadraMAP Sensor Module -- PWM-to-Stepper Controller -- Dual Coil Driver
Coming soon: OctoMAP Sensor Module
TTR Ignition Systems
Re: Ms2 climbing tps 4age
It was a bad TPS and a connector with a loose wire. New TPS, and a double check of the connector and it is working now.
Next is to figure out why I am not getting RPM signal from EDIS.
Next is to figure out why I am not getting RPM signal from EDIS.
-
Matt Cramer
- Super MS/Extra'er
- Posts: 17507
- Joined: Thu Apr 16, 2009 8:08 pm
Re: Ms2 climbing tps 4age
Check if (1) the EDIS module sparks on cranking, and (2) if you can get an RPM signal on the MS2 on a Stim.Spit4ag wrote: Next is to figure out why I am not getting RPM signal from EDIS.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
Re: Ms2 climbing tps 4age
I got the RPM figured out. Despite the EDIS module, coil and sensor coming off of the same car, the wire colors at the sensor were reversed to what they should have been. I had connected the blue wire to the blue wire and brown to brown. I reversed them and I now get an RPM signal in tunerstudio and spark from the coil.
Now I am working on getting fuel while cranking. The injectors work in test mode, but I get no PW while cranking. It did start with starting fluid and started showing PW when above cranking RPM, but with no power to the pump it quickly died.
I have been doing some reading and I am going to change how the injectors get power and see if that makes a difference.
Now I am working on getting fuel while cranking. The injectors work in test mode, but I get no PW while cranking. It did start with starting fluid and started showing PW when above cranking RPM, but with no power to the pump it quickly died.
I have been doing some reading and I am going to change how the injectors get power and see if that makes a difference.