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[debwray]

Hi guys- newbie so sorry if I get it wrong.

Car- X reg omega estate 2.2 16v CD estate first reg 2001- 103k miles.

Problem. every fifth start or so engine lights go on and all I get is limp mode power.  Fault not usually whilst running but this has happened three times now- but not whilst under load.

If I turn the ignition on and off fault clears after between 3 and twenty attempts- then ok for between three days and a week or so.

Took in for code readings.. was told best to replace potentiometer ? did that but fault remains. Took in for code reading this am... still points to potentiometer-but as that has been replaced- not likely. They reflashed ecu with most up to date version (2002?) . Its been suggested next step is to send away ecu - and if that doesn't fix it then next likely thing is faulty connection on wiring loom.  So the question is have any of you seen anything like this before and what is your advice as I don't want to incur another bill and still have a faulty car ? Thanks in advance 
Deb

[Auto Addict]

Did they tell you what the fault codes were?

Sounds to me like the cam sensor is failing - common fault on this car, also puts the car into limp mode.

[Auto Addict]

Also, where abouts in the country are you?

Someone on here with a code reader may live near you, and advise you better.

[debwray]

Hi,
Thanks for the reply autoaddict  - much appreciated. Will try to get the codes or if I'm feeling brave try the paperclip method ! I'm in Lancaster BTW. Had a gut feeling after looking at the board that the ecu might not be the way to go.

Cheers

[Auto Addict]

You can't paperclip a 2.2, you need a code reader,

Did you take it to a dealer, by the way?

[RobG]

Hi guys- newbie so sorry if I get it wrong.

Car- X reg omega estate 2.2 16v CD estate first reg 2001- 103k miles.

Problem. every fifth start or so engine lights go on and all I get is limp mode power.  Fault not usually whilst running but this has happened three times now- but not whilst under load.

If I turn the ignition on and off fault clears after between 3 and twenty attempts- then ok for between three days and a week or so.

Took in for code readings.. was told best to replace potentiometer ? did that but fault remains. Took in for code reading this am... still points to potentiometer-but as that has been replaced- not likely. They reflashed ecu with most up to date version (2002?) . Its been suggested next step is to send away ecu - and if that doesn't fix it then next likely thing is faulty connection on wiring loom.  So the question is have any of you seen anything like this before and what is your advice as I don't want to incur another bill and still have a faulty car ? Thanks in advance 
Deb

TPS on accelerator pedal and/or throttle body in my experience doesn`t put it in limp mode, as said, suspect the cam sensor (0340)

[debwray]

hi, took it to the a non dealership workshop... who did a code reading but they then took it round to the dealership to check it had the latest software . Just rang them ie the non dealership team and have been told the code was PO 120. Know there is a list of codes on the forum somewhere ..but havn't checked to see if it makes sense yet.

Thanks again

[TheBoy]

I think you need to take it to somewhere that has a basic grasp of modern engine management systems. Sadly that rules out virtually all garages, dealers or otherwise.

Wait and see if a nearby member is prepared to take a look at any live data coming off it, as codes alone are only a very small part of the story.

[debwray]

Ok- still need to decide what to do next. Tried the pedal thing and got son to record the results on his smart phone. He has posted it on you tube -

http://www.youtube.com/watch?v=vxL7L-u1oh0 

with a tag line " Mum's car is broken " his user name is phreekedelic . I'm struggling to count the flashes accurately but reckon there is more than the 120 error showing ( it was cleared yesterday but threw more faults last night. Any experts near Lancaster- can travel to you.
What do you think ?

[Osprey]

What did your last slave die of?   

I reckon it is:

0120
Throttle Position Sensor (TPS) Circuit 1 Voltage High /
Throttle Position Sensor (TPS) Circuit 1 Voltage Low /
Throttle Position Sensor 1-2 Correlation 

1550
Electronic Throttle Control Reduced Power /
Electronic Throttle Control Forced Idle /
Electronic Throttle Control Engine Stop

1526
Limp Home Adaption Error /
Lower Limit Adaption Error /
Throttle Position Adaption Error /
Throttle Position no Adaption

1500
Position Controller Position Error /
Position Controller Incorrect Signal

0100
Mass Air Flow Sensor Circuit Low Input 

0220
Throttle Position Sensor (TPS) Circuit 2 Voltage High /
Throttle Position Sensor (TPS) Circuit 2 Voltage Low /
Throttle Position Sensor (TPS) Circuit Incorrect Signal

0170
Rich Exhaust /
Lean Exhaust 

1525
Limp Home Position Error

An adult will be along soon to tell you what all this means 

[RobG]

Was the throttle body replaced or was it the TPS attached to the top of the throttle pedal :question

[Auto Addict]

Still think it's the cam sensor by the symptoms, can show up lots of other irrelevant codes.

Anybody near to the Lancaster area to have a look at it?

If it does turn out to be the cam sensor, only buy a genuine one from a Vx dealer, do not be tempted to buy one from anywhere else, even if they tell you it's a genuine one.

[debwray]

Thanks to all for the help, and special thanks to Osprey for counting the flashes- got different numbers every time I tried it.

The invoice says replaced throttle potentiometer so I think it was  just the sensor not the body ?

So , you still reckon best bet is cam sensor- on that basis will try and get it done on Friday. ( and promise to ask for genuine part ! )

Really appreciate all your help !

Thanks   

[Auto Addict]

Thanks to all for the help, and special thanks to Osprey for counting the flashes- got different numbers every time I tried it.

The invoice says replaced throttle potentiometer so I think it was  just the sensor not the body ?

So , you still reckon best bet is cam sensor- on that basis will try and get it done on Friday. ( and promise to ask for genuine part ! )

Really appreciate all your help !

Thanks   

If you don't take it to a dealer, or buy one yourself, you will not get a genuine part, believe me, and you will still have the problems.