Baba Galant

1 AYC Bar
Lifetime Member
Location
Melbourne
First Name
John
Drive
Galant VR4 twin turbo 1997
I know it's a pain but glad we have a possible cause regarding sensors and throttle body.
Did yours display any symptoms like mine while driving?
 

Legnum in America

1 AYC Bar
Premium Member
Location
Chicago
First Name
Mike
Drive
1997 Mitsubishi Legnum VR4 COTY
2022 Subaru Outback Onyx XT
1999 Honda Civic EX
I know it's a pain but glad we have a possible cause regarding sensors and throttle body.
Did yours display any symptoms like mine while driving?
I do get this weird startup. It has about a half a second delay after it cranks over. It's almost like it's going to just die but then it starts running.
 

Baba Galant

1 AYC Bar
Lifetime Member
Location
Melbourne
First Name
John
Drive
Galant VR4 twin turbo 1997
Ok that's different to mine, when it hits mine becomes undriveable , won't accelerate and feels like the intake pipe is leaking. Restarting clears the errors and it's back to normal.
 

Legnum in America

1 AYC Bar
Premium Member
Location
Chicago
First Name
Mike
Drive
1997 Mitsubishi Legnum VR4 COTY
2022 Subaru Outback Onyx XT
1999 Honda Civic EX
Ok that's different to mine, when it hits mine becomes undriveable , won't accelerate and feels like the intake pipe is leaking. Restarting clears the errors and it's back to normal.
That happened to me on my original throttle body. I took off the TPS sensors to clean them and when I put them back on. I did not readjust them properly. My car would only roll in drive, zero acceleration. After adjusting them properly it was fine. Then I bought a new throttle body and put that on which came with the TPS sensors already.
 

Legnum in America

1 AYC Bar
Premium Member
Location
Chicago
First Name
Mike
Drive
1997 Mitsubishi Legnum VR4 COTY
2022 Subaru Outback Onyx XT
1999 Honda Civic EX
Put on the winter tires and the car threw an AYC code of 25. I was just wondering do I need to reset the ECU or is the car just letting me know that I had different tire diameter previously?

Winter tires - 205/55 16
Summer tires - 225/40 18
 
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MatiLP640

5W4G0N
Lifetime Member
Location
Brisbane
First Name
Matt
Drive
1999 Black Legnum VR4
Are all 4 corners are the same size and pressure? You dont have to reset it but will throw code when one of the wheels has different diameter.
 

MatiLP640

5W4G0N
Lifetime Member
Location
Brisbane
First Name
Matt
Drive
1999 Black Legnum VR4
Then its really wierd, try to delete the code and see if will come back. If will then definitely somethings wrong with your winter tyres/wheels
 

Legnum in America

1 AYC Bar
Premium Member
Location
Chicago
First Name
Mike
Drive
1997 Mitsubishi Legnum VR4 COTY
2022 Subaru Outback Onyx XT
1999 Honda Civic EX
Then its really wierd, try to delete the code and see if will come back. If will then definitely somethings wrong with your winter tyres/wheels
Dropped off the car this morning to have the tires inspected. Turned out that one of the new tires coned and had to be replaced.
 

Danny

Idling at the Lights
Premium Member
Location
CZECH
First Name
Daniel
Drive
6A13TT A/T sedan 1998
I do get this weird startup. It has about a half a second delay after it cranks over. It's almost like it's going to just die but then it starts running.
Did you find a solution for the error codes? I have got exactly the same problems - weird startup and TCL 75 and engine 14 codes. When I step on and then release the gas pedal the check engine light comes on. TCL OFF is olways on. But on idle there is no check engine light. The engine is quiet, everything works perfectly and only 119.000 driven. No modifications just aftermarket intercooler and BOV. I appreciate any help, thanks.
 

Baba Galant

1 AYC Bar
Lifetime Member
Location
Melbourne
First Name
John
Drive
Galant VR4 twin turbo 1997
I got this yesterday again after a few months of no issues.
Car drives fine though I'd say it takes out the ABS. Mine came on after boost at freeway speeds.
Plugged in laptop and had about 10 errors including maf temp, crank sensor, ecu strain and TPS.
Starting to think it may be a harness or connector issue and will have a good look today.
 

Legnum in America

1 AYC Bar
Premium Member
Location
Chicago
First Name
Mike
Drive
1997 Mitsubishi Legnum VR4 COTY
2022 Subaru Outback Onyx XT
1999 Honda Civic EX
Did you find a solution for the error codes? I have got exactly the same problems - weird startup and TCL 75 and engine 14 codes. When I step on and then release the gas pedal the check engine light comes on. TCL OFF is olways on. But on idle there is no check engine light. The engine is quiet, everything works perfectly and only 119.000 driven. No modifications just aftermarket intercooler and BOV. I appreciate any help, thanks.
I replaced a few sensors, spark plugs, wires, fuel pump. I also replaced the idler control valve but every once when I still have this issue. Someone had said it might be the car running to rich and the O2 sensor is saturated with fuel and needs to burn off. In the spring I'm going to hook up a fuel pressure regulator and rebuild the injectors. As far as the error lights, I found that they put the wrong size tires on the car. I got the correct tires put on in error codes were gone.
 

Danny

Idling at the Lights
Premium Member
Location
CZECH
First Name
Daniel
Drive
6A13TT A/T sedan 1998
Today I have measured voltage on TPS between pins 2 and 4 and it gives me 584 mV which seems to be ok.

Then I have measured voltage on APS (IPS) also between pins 2 and 4 and it gives me 691 mV which seems to be ok too.
There is also resistance between pins 3 and 4.

According to the manual TPS voltage should be between 580 - 690 mV and for APS should be 400 - 1000 mV.

Everything seems to be fine. What should I try as a next step?

Can a boost leak causing it?
 
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