Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[bigpaul]

cant do anything until tonight stuck at work 

So my understanding is if it runs better with MAF unplugged thats what is faulty is that right ?

when i fooled with the throttle control body and it ran better theres no connection you think ?

[Jimbob]

Im not saying it isnt the throttle body, but there are other things it could be.

Throttle body issues are rare.
2.6 / 3.2 MAF issues are quite common, (far more so than any other omega) and VERY easy to rule in / out so IMHO a good easy starting point on any fueling related issue. When removed, they run a default map, so although less economical for a bit, it wont hurt the car and will remove any dodgy values its producing from the equation.  If its no better, plug it back in and carry on diagnosis from another step.

[bigpaul]

OK great i will give it a go somebody was kind enough to give me a link to the MAF position in the engine as a picture but is from the old site so not sure if its the 2.6 or not really worried about pulling out the wrong connector

[Jimbob]

OK great i will give it a go somebody was kind enough to give me a link to the MAF position in the engine as a picture but is from the old site so not sure if its the 2.6 or not really worried about pulling out the wrong connector

That pic is good enough, you shouldnt get it wrong...Maf as shown, connector may face any direction as its rotatable, but as shown, just down from airbox, should be between 2 big jubilee clips about 6 inches apart.

other connector on the elbow there is the air temp sensor

End of the day, whatever you unplug...if its makes driving difficult, just stop and plug it back in

[bigpaul]

ok many thanks i will take a look tonight 

[terry paget]

Had a similar fault on son's 2.0 petrol Omega. He claimed it was dangerous. He brought it back. I checked throttle box, spindle, cable, all seemed OK. Reassembled, fault gone. Drove for two days, then fault returned. I suspected groove worn in throttle cable outer - car is high mileage. So I removed scuttle and rotated throttle cable outer 180 degrees, Fault cured.

Worth a try.

[Jimbob]

If only a 2.6 had a cable to rotate

[Kevin Wood]

I have seen a 2.6 with exactly these symptoms, and it was the MAF sensor.

[bigpaul]

OK guys did as instructed disconnected the MAF and ran engine.

You guessed it fault still there  engine reving as usual to 2000 revs without coming down unless I persuade it.

Went back to garage but no real help other than to say all leaks etc checked for.

Think I may have to try the throttle body again this time with a complete exchange just bought a Bosch one on ebay hopefully will do the trick

[symes]

Just thought-check small vac pipe under throttles maybe blocked-you have to undo top plenum first though -while there you can check seals-seems more like air leak to me-MAF would make it run erratic/stop not rev high IMHO

[bigpaul]

ok guys changed throttle body complete fault still there 

soon as the engine gets warm straight up to 2000 revs

now at the far end of the engine there is a small rounded pot name unknown to me its attached by a metal bracket and the throttle runs through it i have pics but cant work out how to post them here ?

anyway it appears to have a delayed reaction when you operate accelerator can anyone help me with what it is ? what it does ? show me how to add pics here

[Kevin Wood]

You need to get it to a code reader that'll give you live data, IMHO.

[bigpaul]

any way i canpost pics on here to show you what im trying to identify 

[dbug]

any way i canpost pics on here to show you what im trying to identify 

Look here http://www.omegaowners.com/forum/index.php?topic=52309.0

[bigpaul]

Booked in to another garage on Monday hopefully they will be able to help seems im seeing faults where ever i look now so i might as well post pics of the whole engine 

Has been another suggestion that it could be linked to the cruise control despite the fact that i have never used it ? might be worth having a go at disconnecting it if i can work it out

Short of that its the local dealership  probably charge more than the cars worth

wouldnt be amazing if it turned out to be the lambarda sensors after all this