O2 sensor and MAF????

[zeus4604]

Had a post on here a while back with symptoms of lack of power, acceleration and poor fuel economy, i was advised on here that it could be my MAF but wouldnt know without a diagnostic check, so i just had one carried out by hometune, sherburn-in-elmet, his machine came up with the fault code P0130 which is the O2 sensor, so without delay ive now changed the O2 sensor and my car runs even worse, do i need to clear the fault code first? Any ideas?

 

[zeus4604]

Oh Dam, didnt work, it drives like a bag of spanners now, worse than before, now i have next to no acceleration at all. Im close to burning the car

 

[mouldb]

Change the MAF Mate!!!

 

[angus falconer]

change the MAF - it often doesn't trigger obvious fault codes

 

[bibamus]

Before I changed my MAF, I ran the car without it connected ( just disconnected the electrical socket) It accelerated much better and almost behaved as normal. Changed the MAF for a new one and it runs as new again.
Doing the same might help you diagnose the problem a bit easier.

Allan

PS, it took the car a day or so to perform at its best, I think the ECU will adjust its settings to try and compensate for faulty sensors, but after a few starts, it seems to recalibrate itself to the new stuff. Well ,thats how it seems to me!

 

[Dom320]

Just changed my MAF last week (v. easy quick and cheap). What a transformation - she flies again now!!

 

[jberks]

I'd go with the MAF too.
My o2 sensor was diagnosed is just outside tolerance. Ordered a new one but 2 days later she dropped into safe mode. Garage changed the o2 sensor but no improvement, then changed the MAF - all fine again. Whether there was anything wrong with the o2 sensor I'll never know but the MAF sorted it. Allegedly a duff MAF can kill the o2 sensor - I guess by running with poor mixture.

 

[zeus4604]

Wahoo!!!! Wahoo!! what can i say, why the hell didnt i listen to everyone in the first place, new mas/maf fitted car drives like new, anyone else reading this my advice is, listen to everyone and change the MAS/MAF first, i'll say it again change the dam thing im an idiot and wasted money by not listening, change the MAS/MAF i think ive painted the picture, thank you all for your posts. Im smiling again yay.
i got a brand new mas off e-bay bosch unit for 39.99 plus 6.50 postage cost me more for a diagnostic check, waste of time and effort


CHANGE THE MAS!!!!!!