Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Migalot on 14 June 2018, 13:23:46

Title: Throttle position sensor
Post by: Migalot on 14 June 2018, 13:23:46
Can anyone tell me exactly where to find the TPS on a 2.6V6 2002?  ???

Thanks in advance.  :y
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 13:29:52
There are two... One on the throttle body and one on the pedal...

Code for it is usually due the the plug being slightly loose on the throttle body... Cable tying the plug together tightly usually resolves.

Can also be a sigh that the breathers and throttle body are gummed up...

Check both :y
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 14:54:11
Thanks, Doc, but why is there only this one type shown here? Does this one go on the throttle body?

Can't see one for the pedal listed.

http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors (http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors)
Title: Re: Throttle position sensor
Post by: zirk on 14 June 2018, 15:04:25
Thanks, Doc, but why is there only this one type shown here? Does this one go on the throttle body?

Can't see one for the pedal listed.

http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors (http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors)
As said, check the Plugs and wiring first, then do Ing. restart before seeking for Parts, they very rarely fail.
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 15:10:25
Thanks, Doc, but why is there only this one type shown here? Does this one go on the throttle body?

Can't see one for the pedal listed.

http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors (http://www.vehiclepartsdatabase.com/vehicles/allprivateroadvehicles/opel/omegab/26v6/y26se/18241/throttlepositionsensors)
;D
 Sorry to piss on the parade, but that IS the pedal sensor ;)

As Zirk confirmed, see my last. It will be a combination of gummed up throttle body and a loose plug on the throttle body...
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 15:36:24
Appreciate your input, guys, but you're barking up the wrong tree!

Essentially, I have a new throttle position sensor (as per link), which I bought a long time ago and just wanted to fit it. I don't have a specific TPS problem, but I do have a gearbox issue which Stephens Engineering (autobox specialists) reckon may well be an electrical issue. I am therefore trying to go through the less-expensive sensors, etc. before looking into the box itself.

After having a new crank sensor fitted, the autobox issue disappeared ENTIRELY for three months. It then started to come back (I seem to remember it started to feel a bit odd again after having a jolt in the car from a pothole, but I may be wrong). Essentially, the box works fine on straight acceleration and changes perfectly, but if driving sedately at 30mph, the revs can suddenly rise by 1,000rpm and then it will go into 3rd with a jolt, causing limp home mode and management light on. It always resets after a restart. I've had the codes read and they are

P0730 Incorrect Gear Ratio
P1625-002 Controller voltage switch signal too low

It is NOT an ATF level issue (already checked). The issue first arose about 4 years ago as an irritating, but infrequent problem but it seems to be occurring more frequently now. As I said, Stephens reckon I need an autoelectrician to check it over. Problem is autoelectricians are as rare as hen's teeth round here.

Back to the TPS: Is it straightforward to fit my new one to the throttle? I may as well as there's no cost involved.

       
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 15:46:50
Was the crank sensor a genuine GM one purchased from a genuine VX dealer that you genuinely had to walk in to?

If not, try again :y

Equally, if that isn't a genuine tps sensor (as above) you are wasting your time fitting it as a) it isn't the problem, and b) won't solve anything (might actually make it worse).

And, again, check the throttle body items.
Title: Re: Throttle position sensor
Post by: Nick W on 14 June 2018, 15:50:52
You have two fault codes that relate to gearbox electrical problems, yet you blame a part that isn't anything to do with either of them. That's not likely to fix the fault.
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 18:54:05
You have two fault codes that relate to gearbox electrical problems, yet you blame a part that isn't anything to do with either of them. That's not likely to fix the fault.

I'm not blaming anything specifically. Even Stephens Engineering thought it could be the ECU (it's not, as I have swapped it and checked) or a sensor fault.
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 19:10:03
Just looking around the web and found an Opel site that says error code P1625 is a relay power supply fault.

Could I have a faulty autobox relay?  ???

May take a look tomorrow.
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 19:13:04
Which ecu  ::)

And at risk of repeating myself, where did you buy the crank sensor from? The fact that this cured the issue, and then only for three months tells me two things... 1. It's the problem and 2. That it wasn't a genuine sensor.

The throttle body plug is a recurring weak point and unless the breathers are spotless, the throttle body is probably the colour of molasses inside.

Individually people here, myself included have hundreds of thousands of miles experience of these, collectively there's millions of miles experience.

It's your car, so ultimately you will do whatever you want to do, be try to be mindful of a few things... Advice will be given freely based on the information provided. If you seek advice, ensure that you provide accurate information and also that upon following said advice, you report back with some sort of update. ;)
Title: Re: Throttle position sensor
Post by: Steve B on 14 June 2018, 19:22:29
In the end you will end up swapping that box....this faults been on here loads of times...it always ended with a solenoid valve in the box getting the blame....ive had it Amba had it and a few more.and the cheap simple cure was a AR35.
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 21:32:39
Which ecu  ::)

Transmission ECU. :y

As far as the crank sensor is concerned, I simply can't remember its provenance as I bought it when I originally got the car and kept it in the storage compartment in the boot.
Title: Re: Throttle position sensor
Post by: Migv6 le Frog Fan on 14 June 2018, 22:04:09
Getting back to the original point. Out of curiosity I have been out and had a look for the TPS on mine (assuming in the region of front of plenum) but cant find it !  ??? :-[
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 22:10:47
And at risk of repeating myself, where did you buy the crank sensor from? The fact that this cured the issue, and then only for three months tells me two things... 1. It's the problem and 2. That it wasn't a genuine sensor.

Have you a GM part number for the crank sensor, Doc? This site has genuine Siemens sensors, but there are apparently three alternatives:

http://www.lmfvauxhall.co.uk/Crankshaft-Sensor-Omega-V6.html (http://www.lmfvauxhall.co.uk/Crankshaft-Sensor-Omega-V6.html)

Cheers.

Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 23:09:17
Quote
'Bosch' 90540743, which is also applicable to the Y26SE, X30XE and Y32SE engine variants.


There do :y
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 14 June 2018, 23:12:46
Getting back to the original point. Out of curiosity I have been out and had a look for the TPS on mine (assuming in the region of front of plenum) but cant find it !  ??? :-[
::)

Throttle body tps is built into the actuator motor/throttle body assembly  :y essentially it's an extra resistance circuit on the potentiometer... *

Pedal one is as alluded earlier in the thread, but both register in the engine ecu :y

*I stand graciously to be corrected on this specific detail  ;)
Title: Re: Throttle position sensor
Post by: Migv6 le Frog Fan on 14 June 2018, 23:24:35
So, the tps unit which is located with two screws, which Im thinking of, is from the 2.5 / 3.0 only  ?  :-\

Like this.

https://www.ebay.co.uk/itm/Vauxhall-Omega-MK2-B-3-0-V6-Variant2-Intermotor-Throttle-Position-Sensor-TPS/291703199090?hash=item43eadd9572:g:q3IAAOSwgZ1Xq7QP
Title: Re: Throttle position sensor
Post by: Migalot on 14 June 2018, 23:29:44
Quote
'Bosch' 90540743, which is also applicable to the Y26SE, X30XE and Y32SE engine variants.


There do :y

Ta muchly! :y
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 15 June 2018, 00:11:22
So, the tps unit which is located with two screws, which Im thinking of, is from the 2.5 / 3.0 only  ?  :-\

Like this.

https://www.ebay.co.uk/itm/Vauxhall-Omega-MK2-B-3-0-V6-Variant2-Intermotor-Throttle-Position-Sensor-TPS/291703199090?hash=item43eadd9572:g:q3IAAOSwgZ1Xq7QP
If it's in the engine bay, then yes... Pedal one similar if not the same ;)
Title: Re: Throttle position sensor
Post by: grifter on 15 June 2018, 10:54:29
Getting back to the original point. Out of curiosity I have been out and had a look for the TPS on mine (assuming in the region of front of plenum) but cant find it !  ??? :-[

There is a plug on left side just under and to the left of bellows air intake bit, i think that's where it resides. My plug securing clip was broke off when i done TB so had to secure plug with tie wrap as it was actually causing running problems and codes
Title: Re: Throttle position sensor
Post by: TheBoy on 15 June 2018, 12:05:18
I would buy the crank sensor from your real, local dealer, rather than grey stock from elsewhere.

You may get away with it, but a large number of people here haven't
Title: Re: Throttle position sensor
Post by: TheBoy on 15 June 2018, 12:06:53
I doubt either the APS or TPS are the issue here, as they both have dual feedback circuits in,  and will raise a code if they don't match.
Title: Re: Throttle position sensor
Post by: Migalot on 15 June 2018, 12:09:37
I would buy the crank sensor from your real, local dealer, rather than grey stock from elsewhere.

You may get away with it, but a large number of people here haven't

The local dealer didn't have one (even in their whole group), but I ordered this:

https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html (https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html)

Should be OK!  :y
Title: Re: Throttle position sensor
Post by: TheBoy on 15 June 2018, 12:12:06
Cancel, and ask dealer to order one. Will be there by prob Monday if you order right now
Title: Re: Throttle position sensor
Post by: TheBoy on 15 June 2018, 12:14:10
I would buy the crank sensor from your real, local dealer, rather than grey stock from elsewhere.

You may get away with it, but a large number of people here haven't

The local dealer didn't have one (even in their whole group), but I ordered this:

https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html (https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html)

Should be OK!  :y
Pretty certain with that site, the N means a non genuine part
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 15 June 2018, 12:47:32
You reckon ::)

The sub £16 price tag is a clue... :D

Get a refund and spend the money doing what you were told to do.
Title: Re: Throttle position sensor
Post by: Migalot on 15 June 2018, 12:57:10
I would buy the crank sensor from your real, local dealer, rather than grey stock from elsewhere.

You may get away with it, but a large number of people here haven't

The local dealer didn't have one (even in their whole group), but I ordered this:

https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html (https://www.vauxhall-car-parts.co.uk/acatalog/VAUXHALL_OMEGA_CRANK_SENSOR_-_90540743N.html)

Should be OK!  :y
Pretty certain with that site, the N means a non genuine part

Oh. OK.  :o

Fair do's, but the Vx group didn't have one, so you pays your money, and you takes your choice.

At under £20, I can live with it if it doesn't last as long as an OEM.
Title: Re: Throttle position sensor
Post by: TheBoy on 15 June 2018, 14:00:12
but the Vx group didn't have one
That I find next to impossible to believe. Granted, some/lots of Omega parts now have to come from Germany, which adds a day, but as its used on newer cars, I would be surprised if GM had none in the UK.
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 15 June 2018, 14:10:38
Right, enough of this bullshit...

Genuine GM V6 DBW crank sensor is as follows...

£85.20 INCLUDING VAT, NO DISCOUNT ie this is the maximum price. Feel free to haggle better.

Available within two days from Central Stores in Germany.

Now quit making excuses and get done.
Title: Re: Throttle position sensor
Post by: Migalot on 15 June 2018, 14:14:01
Right, enough of this bullshit...

Genuine GM V6 DBW crank sensor is as follows...

£85.20 INCLUDING VAT, NO DISCOUNT ie this is the maximum price. Feel free to haggle better.

Available within two days from Central Stores in Germany.

Now quit making excuses and get done.

Thanks, but the other one is on its way. I can live with it and I'm not made of money.  :)
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 15 June 2018, 14:18:03
Replacing it at £85 once every five years is far more financially and temporally efficient than £16 every 3-6 months...

But it's your car and money, and I won't bother next time as you clearly won't be helped ;)
Title: Re: Throttle position sensor
Post by: Migalot on 15 June 2018, 15:29:20
Replacing it at £85 once every five years is far more financially and temporally efficient than £16 every 3-6 months...

But it's your car and money, and I won't bother next time as you clearly won't be helped ;)

No need to be unpleasant.  >:(

I ordered it and it's on its way, so I can't stop it or get a refund. I was under the impression that it was a proper Vauxhall part. OK, so it's not. But there's no guarantee that it will last only 3-6months, the same as there's no guarantee that an OEM one would last five years.

It's not a question of not being helped. I appreciate all advice, but I don't like being ordered about. This is a question of taking my own decision, rightly or wrongly, at the time.
Title: Re: Throttle position sensor
Post by: Doctor Gollum on 15 June 2018, 16:02:50
Not being unpleasant. Merely frustrated that you have still yet to answer the original questions regarding the throttle body plug and  throttle body cleanliness, and you clearly failed to read* the advice regarding the crank sensor once that came to light.

*The letters/words might have been in a legible order but the meaning was clearly lost.

I wasn't ordering you to do anything, merely giving directions to solve your problem. If they were too concise or direct and caused offense then that's your look out, not mine.

Have a lovely afternoon (https://m.imgur.com/t/millennials/aIoYY)
Title: Re: Throttle position sensor
Post by: Andy A on 15 June 2018, 17:10:44
You can get one here for £55.38 delivered.  :)  :y

http://www.genuinepartsearch.co.uk/
Title: Re: Throttle position sensor
Post by: Migalot on 15 June 2018, 18:20:19
Have a lovely afternoon (https://m.imgur.com/t/millennials/aIoYY)

If you have to post links to silly pictures in your posts, then you have a problem, not me.

 >:( >:(
Title: Re: Throttle position sensor
Post by: Andy A on 15 June 2018, 19:53:19
Have a lovely afternoon (https://m.imgur.com/t/millennials/aIoYY)

If you have to post links to silly pictures in your posts, then you have a problem, not me.

 >:( >:(

You need to put the part number in the search box. Top left.  ::)