Maf
- Thread starter dooleysl
- Start date
The 1UZFE EGR Delete Kit is available for sale here.
Bushwhacker
Member
Bushwhacker
Member
Green/white is EVG.
Brown wire is Earth.
Yellow/black is VHA.
Blue/yellow is VG
White wire is ignition 12v.
Have you tried cleaning it first?
http://www.clublexus.com/forums/rx-...86-diy-maf-mass-air-flow-sensor-cleaning.html
Brown wire is Earth.
Yellow/black is VHA.
Blue/yellow is VG
White wire is ignition 12v.
Have you tried cleaning it first?
http://www.clublexus.com/forums/rx-...86-diy-maf-mass-air-flow-sensor-cleaning.html
Gave it a good cleaning, cleaned plugs again and fixed damaged vacuum pipe. Now idles a lot smoother and revs well. Ran it up to temperature and test drove up and down road, a whole lot better!
A bit hesitant under hard throttle but fine if gentle, may be an issue with the filter/Bosch 044 fuel pump.
Finally moving forward again, cheers for the help.
A bit hesitant under hard throttle but fine if gentle, may be an issue with the filter/Bosch 044 fuel pump.
Finally moving forward again, cheers for the help.
Bushwhacker
Member
That's two pints now. 
Cleaned the spare MAF and swapped for the old one, still got a misfire. Have covered 60 gentle miles over the last two days. Under a heavier throttle car feels like its running short of a few cylinders and gradually clears and revs then pick up.
No error codes but definitely running rich. So close but yet so far...
Suggestions? Or if anyone has any time available will happily trailer it over for a more expert opinion.
Coming up for a year since the car went to the fabricators running fine and came back running like a dog. Eventually tracked a lot of the issue to the fact that the rack was touching the underside of the gearbox, but has never run right since.....
Cheers
No error codes but definitely running rich. So close but yet so far...
Suggestions? Or if anyone has any time available will happily trailer it over for a more expert opinion.
Coming up for a year since the car went to the fabricators running fine and came back running like a dog. Eventually tracked a lot of the issue to the fact that the rack was touching the underside of the gearbox, but has never run right since.....
Cheers
Finally admitted defeat and have taken it to a garage that specialises in Toyota engines. So far one day spent telling me which things are working, nothing that isn't working so far. Air flow meter may be reading incorrectly....might be on the hunt for a third one. Seems odd that the air flow meter has an effect on cylinders 2,5,4 and 1?
Any thoughts? Getting close to buying another running donor car (might be a cheaper option)
Any thoughts? Getting close to buying another running donor car (might be a cheaper option)
BlackUZZ31
Member
tried changing the ignitors?
Yes swapped out all the usual suspects. Back from the garage as they cant find the problem, but managed to damage a knock sensor.
Had the inlet manifolds off to sort out and gave it a good clean and new gaskets. Did find a leak in the egr valve gasket so replaced that as well. All back together but now throwing a code 14.....guess I have a loose connector somewhere?
Had the inlet manifolds off to sort out and gave it a good clean and new gaskets. Did find a leak in the egr valve gasket so replaced that as well. All back together but now throwing a code 14.....guess I have a loose connector somewhere?
Have you or the workshop had a scan tool connected? To check things like oxygen sensors cycling , TPS spanning correctly , temp showing correct etc. Have you checked the Caps inside the ECU?
Have you checked the earths are fine , all the way back to the ECU?
Have you tried unplugging the alternator?
What fuel pressure is it running?
Have you checked the earths are fine , all the way back to the ECU?
Have you tried unplugging the alternator?
What fuel pressure is it running?
Rechecked all the connections and engine firing up and running.
Going to get a pressure gauge to check fuel, running a Bosch 044 so should be more than adequate for a stock motor. But will test it...
Garage told me they checked signals from sensors and all seems ok, they were concerned about the MAF, but have another one on its way to me.
Reverted back to the original ECU.
Definitely running better and driveable although still hesitant on hard throttle or when trying to pull uphill from a standing start.
Hopefully get the pressure check and new MAF this week and see how that goes. Fingers crossed
On a positive note, interior finished, car painted and put back together. One day it will run as good as it looks
https://www.flickr.com/photos/1976so22/13991291348/
https://www.flickr.com/photos/1976so22/13991285230/
Going to get a pressure gauge to check fuel, running a Bosch 044 so should be more than adequate for a stock motor. But will test it...
Garage told me they checked signals from sensors and all seems ok, they were concerned about the MAF, but have another one on its way to me.
Reverted back to the original ECU.
Definitely running better and driveable although still hesitant on hard throttle or when trying to pull uphill from a standing start.
Hopefully get the pressure check and new MAF this week and see how that goes. Fingers crossed
On a positive note, interior finished, car painted and put back together. One day it will run as good as it looks
https://www.flickr.com/photos/1976so22/13991291348/
https://www.flickr.com/photos/1976so22/13991285230/
To be honest they were a bit sketchy as to what they did, hence getting the car back from them. Still hoping to find someone (in the UK) who can sort out the issues. While I am fairly handy with spanners/welder when I comes to things electrical it seems like double Dutch to me, I have the feeling I will do more harm than good.
