Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: richard1967 on 09 February 2010, 19:18:43
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Hi Ive got the following fault code P1555, which is Throttle position load signal not pausible
So, on this basis how straight forward is it to change the throttle sensor??
Cheers
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would take off and give a clean and also wile it is off put some switch cleaner in the hole and shack it around in side should work again after it dryed out :y
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Ok, do you know if theres a guide on here for cleaning the throttle body housing, or the sensor ? Ive had a search around, and cant find a guide- probably me going mad!
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no there is not from what ive seen but do as said and you will be fine as work so many times just un screw it off and give a good clean they get a build up of muck in side and if seal on plug is going the damp gets in, :y
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Thanks for that....Ive just found this which I think is the nearest to a guide for cleaning the throttle body plus alot of other things http://www.omegaowners.com/forum/YaBB.pl?num=1207387811
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What engine....
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2.2 on a 2002 auto
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Thanks for that....Ive just found this which I think is the nearest to a guide for cleaning the throttle body plus alot of other things http://www.omegaowners.com/forum/YaBB.pl?num=1207387811
Or you could try this which is the exact guide for your engine
http://www.omegaowners.com/forum/YaBB.pl?num=1162397695
:y :y
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Oke doke, I will give that a bash then. It looks pretty straight forward even for a novice like me
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2.2 on a 2002 auto
It's drive by wire, so it won't be the TPS. Might be worth a try cleaning the throttle but if that fails I'd be looking for an induction air leak, clogged air filter or maybe a faulty MAF.
Kevin
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.......even though Ive had the codes read twice and the fault code is P1555, which is Throttle position load signal not pausible
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.......even though Ive had the codes read twice and the fault code is P1555, which is Throttle position load signal not pausible
On a drive by wire engine the ECU is setting the throttle position, because it's moving the throttle, not the driver. For this reason, if there was any doubt on the throttle position (DBW cars have dual redundant sensors on the throttle) it would go into limp home.
What it is seeing is some other characteristics of the engine (e.g. air/fuel volume) which is not consistent with the throttle position and RPM at which the engine is operating. That's why I say look for an induction leak or blockage.
Is it performing how it should? No running issues?
Kevin
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Its gutless. Theres no stalling, but if I floor the throttle the power isnt there as it should be. The problem seems to occur when theres a 2 to 3 rd gear change at approx 30 mph at 1500rpm
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Its gutless. Theres no stalling, but if I floor the throttle the power isnt there as it should be. The problem seems to occur when theres a 2 to 3 rd gear change at approx 30 mph at 1500rpm
In that case I wonder if it's a faulty MAF. :-/ It would be useful to see some live data from it.
Kevin
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Unplug the MAF and see if it runs any better
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Now Im more confused. Would the best thing be to clean the throttle body housing etc, see if that cures it. If it doesnt then take the MAF off. THe engine idles fine, its just when the car is driving along that I get the car with a spanner symbol, which has generated the fault code
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I had the same error on the same engine. Spent ages looking for the sensor which is apperently built into the throttle body.??
Took the throttle body off and gave a good clean with carb cleaner. Been as good as new since with no errors. :y
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Now Im more confused. Would the best thing be to clean the throttle body housing etc, see if that cures it. If it doesnt then take the MAF off. THe engine idles fine, its just when the car is driving along that I get the car with a spanner symbol, which has generated the fault code
If it's sluggish then I doubt very much that it will be a dirty throttle body but it won't hurt to clean it anyway.
Giving it a run with the MAF disconnected, as Mark says, will be worth a try.
Kevin
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OK the plan for Saturday morning is to clean the throttle boy, and check the car. Then Il give the car a run. .........then Il run it with the MAF disconnected. By the way if it needsa new MAF, Im assuming it doesnt need to be coded to the car or anything daft like that ??? Its just a plug and go device I assume??
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OK the plan for Saturday morning is to clean the throttle boy, and check the car. Then Il give the car a run. .........then Il run it with the MAF disconnected. By the way if it needsa new MAF, Im assuming it doesnt need to be coded to the car or anything daft like that ??? Its just a plug and go device I assume??
Find the fault before worrying how to replace it!! Walk before running ;)
But, no
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SOLVED AND SORTED :y :y
Followed the guide on here for cleaning the pipes and throttle body
The MAF was perfect, and so was the Air Filter
The butterfly valve had a line of carbon around the inside of the body, stopping it from closing properly. The metal throttle body was brown and completely choked up, including the small hole which was blocked
The pipes had a bit of gunge in them
The air pressure was awful - practically non existent
Everything cleaned out using Carb Cleaner (Wynns) Jeeeez that stuff is good. It cleaned everything, so all the stuff is cleaner than when it first left the factory. I also found a good squirt of brake disc cleaner helped as well
The DBW plug was probably the trickiest thing to get out :-X but with a bit of prising it soon popped off
The air pressure is now perfect
The guide was invaluable!! :y :y
I dont have to plan overtaking 8 hours ahead any more LOL! ;D ;D
My fuel economy around town has gone from 18mpg to 27mpg! :y :y
I reckon that I could give the wheezing 6 pots a dam good run even now!!! ;) ;)
I hope some one else who has had the dreaded spanner through car symbol on their dashboard and it isnt the cam sensor or crankshaft sensor and is pulling their hair out like me, reads my posts and then heads for the MAF or throttle body housing
:y :y :y :y :y :y