Replacing throttle position sensor

[sfcl]

Hi all,
Anyone has replaced the throttle position sensor? Where is it and is it easy to do? Thanks in advance. (engine is a 3.O I)
JLO

[Weasel]

It is internal to the throttle body... Why do you need to change it?

[sfcl]

Thanks for the reply. I think that I have to change it as I get a code (88 with the Peake scanner, table 19) and the CES light (and limp mode). The problem occurs more and more often. I suppose that the throttlme body is behind the big rubber part on the side of the inlet manifold?

[Weasel]

Yeah, it's on the side of the manifold where the big rubber hose goes. The throttle body won't work directly after you replace it if you just turn on the key adn start it up, it will not operate/rev... you will need to turn the key on leaving engine off and let it sit untouched for a full minute for it to do a self test of the new throttle body and learn the opposing sensors. (it actually has 2 TPS sensors built in that read in opposite directions for redundant readings)

Just a warning, the hose clamps are a pain to get to... the head on the clamps is a 6mm in case you want to use a socket.

[sfcl]

Many thanks for your help!

[jac]

Hi,

Did you replace the throttle position sensor? I am also getting an error code pointing to it on my 3.0i 2001 X5.

Thanks.

[killcrap]

early x5's have problems with either the wiring harness or the throttle bodys. be sure to have the vehicle properly diagnoised before replacing any components. a ripped intake air boot can cause a fault described as throttle jammed.

[jac]

Thanks for the reply.

These are the codes I am getting:

- Throttle position sensor 1, plausibility, range or performance
- O2 Sensor adaptation limit (all cylinders)
- O2 Sensor control limit (all cylinders)
- Misfire Cyl 1, 3 & 6
- Coolant thermostat jammed open

Perhaps a ripped intake boot could cause all of those errors (except the last one) ?

Thanks.

[thompsw]

I'm getting a code with my 2004 3.0i but not showing any negative symptoms running

76 Throttle position sensor 1, plausibility range or performance

-- can I "safely" ignore it or at some point will it start limping (it's been like this for about 10k miles)

-- would cleaning the throttle body help in any way ?

Dave.

[nate13]

Dave,

Do check your intake boots for cracks or disintegrating rubber. There is a fuel evaporation/ vac line connected to the throttle body boot which increases chemical wear. I had a leak at that connector and the icv offshoot.

The reason your code is displayed is because more air is entering the engine than the maf has accommodated for, and it's at a low enough degree to think it may be related to the throttle body position. As it gets worse you will run leaner until it goes into fault mode and disregards the maf correlation program (then %throttle/rpm based mapping). Back in the day before idle control was so refined your idle would be higher based on ambient air temp.

Cleaning both the throttle body and idle control valve are advised since you are running unfiltered air into your engine. Due to these parts needing to come off to do the crank case ventilation system, (also a DISA valve check would be advised), you may want to use a day on the weekend and refresh your intake side of the engine.

There are plenty of great DIYs for both engines if you are looking to do it yourself!