TPS & ATS Help

mxysxy · Post by **mxysxy** » Mon Jan 17, 2005 1:55 pm

Hi Guys,
I keep getting below error messages from my ECU,

13 Intake air temperature sensor
14 Throttle position sensor

Car has a wierd acceleration around 2250rpm, which loses power and has hard time to accelarate.
I believe this closely related to above TPS error.

What can do to fix these errors?

mxysxy · Post by **mxysxy** » Tue Jan 18, 2005 11:39 am

Come on people,
I did my search about TPS and couldnt see much in the forums.
Read the workshop manual too, but it looks like I need this octopus looking diagnostic tool.
Can anybody help me with TPS or ATS?

Jono · Post by **Jono** » Tue Jan 18, 2005 12:21 pm

what year? trans?

sounds like a faulty/ dirty sensor?

RichardH · Post by **RichardH** » Tue Jan 18, 2005 1:59 pm

Well, if you want to diagnose it and attempt a resolution yourself, it's likely to be:

- Wiring between sensors and engine ECU
- Engine ECU is stuffed
- Sensors are stuffed

...or a combination of these.

For a start, download the complete manuals from:

http://www.fto-ireland.com

That will help you find the sensors, the ECU, etc.

Then, get a multimeter and check end-to-end connectivity of the wiring loom.

Then run through any diagnostic troubleshooting flowcharts in the EFI section of the Chassis Workshop Manual you downloaded.

You may be up for buying one or more sensors.

If you think you may have fixed it any time through these steps, disconnect the car battery for a bit. This will clear down the error codes. Then drive it for a while, and see if any codes reappear.

- Rich
www.ftowa.com

mxysxy · Post by **mxysxy** » Tue Jan 18, 2005 3:50 pm

65 GPX Tip

Now, I already read the manual about TPS and Intake Air Temperature Sensor. And I will try to apply the diagnostics.

I have a question here.
I think my problem could be related to Intake Air Temperature Sensor(ATS). If it cant read the temperature right, computer may not provide the correct mixture for the engine, so this might be the reason why I have problem with the acceleration.
However, I also think that if the TPS is working incorrect, this might cause the problem as well, so I have a power loss around 2300rpm. Maybe the computer thinks that I am not pushing to the pedal or something.

Which one of these or other scenarios seems to you possible guys?

RichardH · Post by **RichardH** » Tue Jan 18, 2005 5:08 pm

Don't know.

If you have two error codes, you need to fix both... irrespective of anything else.

A properly functioning EFI system (sensors, ECU, injectors, etc.) may well resolve an rpm-specific power loss. But at the very least, it will give you a stable starting point for trying to sort out such issues.

- Rich