Hi,me with engine light again.Alphard 2005.2.4  car runs super.apart from 1 thing.Approx every 400 miles engine light comes on.then looses power.turn off ignition  turn back on runs perfect again.Had MOT,yesterday and replaced new spark plugs and coils.i thougbt while at it i would have a new o2,censor fitted which by way it was £170.00.When i drove to MOT centre it drove,super.when new 02 censor was fitted and i drove home engine warning light was on and dove like a pig.just about got home.spent all together £520.right back to were i started Any help or suggestions,app.thank you in advance.Phil.

Sounds like a sensor problem 

There is only 1 o2 sensor 2.4 that's the rear one the front sensor is a fuel ratio sensor sounds like they fitted wrong sensor on the front you need to find out what they fitted easy way to do that ask garage was both same part no.s fitted if they say yes they fitted wrong one on front 

14 hours ago, Picasso said:

There is only 1 o2 sensor 2.4 that's the rear one the front sensor is a fuel ratio sensor sounds like they fitted wrong sensor on the front you need to find out what they fitted easy way to do that ask garage was both same part no.s fitted if they say yes they fitted wrong one on front 

Hi. Take it back, and/or get a second opinion first!

Hi, sorry to hear your still having problems, Im not a mechanic, a quick look up on youtube gave some potential problems that will set an engine light in the order i found on the video.

1/ mass airflow sensor dirty or faulty (+ check air filter and pipework for leaks)

2/catalytic converter fault-Full!

3/o2 sensor /sensors

4/ plugs & coils

5/ fuel cap seal damaged

an obd11 reader might help find a fault

i would also clean or  replace a "pcv"  crank case vent valve.

+ apparently cvt gearbox and speed sensor faults can also  set an engine warning  light

 Hope you can find a good mechanic to fix.

did they actually diagnose the fault, or stick a wet finger in the air?

Hi,picasso.Thank you for help.4 machanics could not tell me what you told me in 2 minits.Thankyou very  much.Going to get sensor changed.thank you.Phil.

16 hours ago, philip klein said:

Hi,me with engine light again.Alphard 2005.2.4  car runs super.apart from 1 thing.Approx every 400 miles engine light comes on.then looses power.turn off ignition  turn back on runs perfect again.Had MOT,yesterday and replaced new spark plugs and coils.i thougbt while at it i would have a new o2,censor fitted which by way it was £170.00.When i drove to MOT centre it drove,super.when new 02 censor was fitted and i drove home engine warning light was on and dove like a pig.just about got home.spent all together £520.right back to were i started Any help or suggestions,app.thank you in advance.Phil.

 

Phil pm your reg no. and i will point you in right direction for the correct sensor

Hi,reg num,is  LK05 VEP.thank you once again.Could you please tell me tyre presure for my alphy.i only no i.e 25 or 30 etc.The british way.And should i use super premium or sta dard fuel.Hope you dont mind me picking your  brain.Thank you once again for your help and nowledge.Phil.

9 minutes ago, philip klein said:

Hi,reg num,is  LK05 VEP.thank you once again.Could you please tell me tyre presure for my alphy.i only no i.e 25 or 30 etc.The british way.And should i use super premium or sta dard fuel.Hope you dont mind me picking your  brain.Thank you once again for your help and nowledge.Phil.

 

The JPNZ Owners Manual specifies 33 psi.

 

There is a very lengthy thread in this Forum on E5 or E10.

Search for E5 E10 in the search box on your home page

 

I respectfully suggests you read it as there is quite a difference of opinions, including my own.

Thanks again.kind regards.Phil.

OK original toyota part no. Is.  8946758090.    Correct part on ebay is.   EBay item no. 384960138126

Thank you once again.What we do without you

On 6/7/2023 at 4:16 PM, philip klein said:

Hi,me with engine light again.Alphard 2005.2.4  car runs super.apart from 1 thing.Approx every 400 miles engine light comes on.then looses power.turn off ignition  turn back on runs perfect again.Had MOT,yesterday and replaced new spark plugs and coils.i thougbt while at it i would have a new o2,censor fitted which by way it was £170.00.When i drove to MOT centre it drove,super.when new 02 censor was fitted and i drove home engine warning light was on and dove like a pig.just about got home.spent all together £520.right back to were i started Any help or suggestions,app.thank you in advance.Phil.

I think you posted an engine warning light problem thread before. The advice then was to buy an OBD reader. Did you get one in the end?

On 6/8/2023 at 7:29 PM, Picasso said:

384960138126

Yes i did.best £50 i ever spent.tha k you for advice.In fact would like to thank everyone for being so helpfull.I  would advise every club member to by one without any hesitation.And Picasso was absolutely correct wben he said iput the 02,sensor were i should have put the fuel sensor.Thanks to everyone for there help.Phil.

Glad you sorted it Phil if you need any more help or part no. Just ask 

14 hours ago, philip klein said:

Yes i did.best £50 i ever spent.tha k you for advice.In fact would like to thank everyone for being so helpfull.I  would advise every club member to by one without any hesitation.And Picasso was absolutely correct wben he said iput the 02,sensor were i should have put the fuel sensor.Thanks to everyone for there help.Phil.

That's great so what is the code reader telling you about the cause of the engine light this time?

Edited June 10, 20232 yr by Geralt

8 hours ago, Geralt said:

That's great so what is the code reader telling you about the cause of the engine light this time?

Hi,Geralt was showing.02 sensor not operating .I actualy put the 02 sensor in the wrong bank.Silly me.Our member Picasso,said exactly that.100% right.