Checked the TPS setting?? Checked the TPS function?

The TPS was setup as per the manual using feeler gauges between the throttle stop. Unless there is another way to setup the throttle?

 

Got the injectors out and getting them serviced today.

Got the serviced and cleaned injectors back no change in the fault. Still having the same fault.

 

I just disconnected the TPS and took the car for a drive. Just trying different things now. The issues are gone with the TPS disconnected.

 

Looks like I may have found the problem. What is the best way to setup the TPS? Is the setting process the same for the bigport as the smallport? I only have a manual for he bigport.

 

Any help in setting up the TPS correctly would be appreciated.

I'm on my phone so I can't upload you a copy, but Google '4AGE manual' & you should find it in PDF form. It'll tell you how to test the TPS using a multimeter to determine if it is working correctly.

Ok. I have setup the TPS as per the manual. Checked and double check all of the readings.

I then checked the voltage as per the manual as well.

IDL-E2 throttle open should be 4.5-5.5v. I am getting 12.3v. Issue 1

VTA-E2 throttle closed should be 0.5v. I am getting 0.65v. Issue 2

VTA-E2 throttle full open should be 3.5-5.5v. I am getting 4.15v. yeah

VCC-E2 throttle any position 4.5-5.5v. I am getting 5.0v. yeah.

I have also checked voltages at B ad B1 all good 12v.

I have swapped both the computer and TPS. Still getting the same results.

Anyone have any suggestions as what is causing this and how to fix it? The manual has got me this far??

Edited January 31, 201511 yr by 85wrx

You should be reading ohms not voltage when testing the TPS.

 

I setup the TPS as per that diagram using the ohms.

 

There is another part in the same chapter in the manual I have that calls for checking voltages with IG S/W on. This is where I found the discrepancies.

Getting 12v at the tps rings bells for me as my understanding is they run off the 5v rail in the ecu and sweep 0-5v. A tps is just a voltage divider (electronics term).

 

 

Is your loom hacked up? Might pay to trace the tps wires all the way back to the ecu.

I thought that next was to check the loom. Pulled it out last night and checked. Wires are exactly as per the wiring diagram I have. No shorts either.

 

Checked all the earths as well. I couldn't see any issues with the wiring at all.

Wait what happends to idl-e2 if you spin the tps to closed throttle position?

 

Ithink It should go to zero assumimg you are using ground as the other wire on your multi meter.

I used E2 as -ve lead on multimeter and IDL as +ve lead on multimeter. When you release the throttle I am sure it went to 0v.