Maf problem rover 75 cdt - Page 3

Mike Noc · 14th November 2018, 09:15

Best thing to do is start a new thread for your problem - this one is 6 years old!

What are your symptoms? Do they go away if you run with the MAF unplugged? If so then it could be your EGR valve playing up, as this is disabled when the MAF is unplugged.

Do you have a tuning box fitted?

There is no resetting required when you fit a new MAF - it is just plug and play.

Arctic · 14th November 2018, 10:08

Quote:

Originally Posted by adonisuk

HI bought my ROVER 75 CLUB and had the maf sensor issue almost immediately and had it diagnosed. Ignored all the advice here and everywhere and fitted a cheap ebay sensor. Two days in and same same.....

Quote:

i have finally bit the bullet and fitted a genuine Bosch.

5 miles down the road and same same...Does the error code need resetting after fitting a new one or is there a different problem altogether? please help....

Genuine Bosch you say was it an whole unit or just an insert, if just an insert then it may well not be genuine as Bosch only sell the whole unit.

adonisuk · 17th November 2018, 19:01

Thanks for the quick reply. Firstly, i have no tuning box fitted. I purchased a complete Bosch unit from a dealer..Symptoms wise, On start up i have an engine management light on permanent, but car runs and pulls fine, then randomly a second light comes on and i lose power under 2-2500 revs. I am having a ton of black smoke periodically and the rear bumper is getting caked in soot. If i pull over and turn off and restart the engine, it will reset and away we go, clear again. I have noticed when climbing a hill on way to work, it brings the light on almost always in the same place. Another query, the turbo duct that connects to the maf has a rubber seal and pushes on, should there be a similar one for the bottom of the hose where it connects as there isnt. I have spoken to a mechanic and he says it is possibly a leaking turbo pipe? How long is it safe to run with the maf disconnected? Thanks so much for your input...

marinabrian · 17th November 2018, 20:06

Quote:

Originally Posted by adonisuk

Thanks for the quick reply. Firstly, i have no tuning box fitted. I purchased a complete Bosch unit from a dealer..Symptoms wise, On start up i have an engine management light on permanent, but car runs and pulls fine, then randomly a second light comes on and i lose power under 2-2500 revs. I am having a ton of black smoke periodically and the rear bumper is getting caked in soot. If i pull over and turn off and restart the engine, it will reset and away we go, clear again. I have noticed when climbing a hill on way to work, it brings the light on almost always in the same place. Another query, the turbo duct that connects to the maf has a rubber seal and pushes on, should there be a similar one for the bottom of the hose where it connects as there isnt. I have spoken to a mechanic and he says it is possibly a leaking turbo pipe? How long is it safe to run with the maf disconnected? Thanks so much for your input...

Err, I would suggest it is more than a MAF sensor, you would be well advised to have the car looked at with T4.

Brian

Arctic · 17th November 2018, 21:46

Quote:

Originally Posted by adonisuk

Thanks for the quick reply. Firstly, i have no tuning box fitted. I purchased a complete Bosch unit from a dealer..Symptoms wise, On start up i have an engine management light on permanent, but car runs and pulls fine, then randomly a second light comes on and i lose power under 2-2500 revs. I am having a ton of black smoke periodically and the rear bumper is getting caked in soot. If i pull over and turn off and restart the engine, it will reset and away we go, clear again. I have noticed when climbing a hill on way to work, it brings the light on almost always in the same place.

Quote:

Another query, the turbo duct that connects to the maf has a rubber seal and pushes on, should there be a similar one for the bottom of the hose where it connects as there isnt

. I have spoken to a mechanic and he says it is possibly a leaking turbo pipe? How long is it safe to run with the maf disconnected? Thanks so much for your input...

Answer to the question above is yes. there is a round seal in the end of the plastic duct shown here by the yellow dots. As above have a T4 session

1

adonisuk · 18th November 2018, 15:20

Thanks again, without the risk of sounding like a total div, i assume T4 is a diagnostic machine? Is it a specific one or just get it on any diagnostics. Im near worksop Notts, do you recommend anyone in the S. Yorks area? Really appreciate your help guys...

CLINTE · 18th November 2018, 15:36

Try Stevestrat's t4 location Map use search function on here to locate post

DMGRS · 19th November 2018, 10:03

Arctic, a friend of mine went through 2 MAFs with severe power issues - that rubber seal was missing from the end of the pipe in your picture.

adonisuk · 19th November 2018, 15:52

DMGRS...do you sell these? (the one with the yellow dots) Update...Had EGR off and tested seemed to be working ok but caked in NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-. Cleaned and put back and so far so good, but i havent really done any miles since...booked in for T4 on monday..

Arctic · 19th November 2018, 18:33

Quote:

Originally Posted by adonisuk

DMGRS...do you sell these? (the one with the yellow dots) Update...Had EGR off and tested seemed to be working ok but caked in NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-. Cleaned and put back and so far so good, but i havent really done any miles since...booked in for T4 on monday..

Hi Gary.
Drop mickyboy a PM and aske if he can sort you one out, maybe one of the other traders may have one also they would be your best bet

19th November 2018, 10:03	#28
DMGRS Discount MG Rover Spares Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011 Location: Hythe, Southampton Posts: 11,320 Thanks: 456 Thanked 3,377 Times in 2,027 Posts	Arctic, a friend of mine went through 2 MAFs with severe power issues - that rubber seal was missing from the end of the pipe in your picture. __________________ Your trusted MG Rover specialist! Tel: 02380 001133 / Email: [email protected] We now have a 'chat' function on our site for even quicker replies. Give it a try! Remember - discount code FORUM5 for 5% off

14th November 2018, 09:15	#21
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,547 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Best thing to do is start a new thread for your problem - this one is 6 years old! What are your symptoms? Do they go away if you run with the MAF unplugged? If so then it could be your EGR valve playing up, as this is disabled when the MAF is unplugged. Do you have a tuning box fitted? There is no resetting required when you fit a new MAF - it is just plug and play.

17th November 2018, 19:01	#23
adonisuk Newbie ROVER 75 Join Date: Jun 2018 Location: WORKSOP Posts: 10 Thanks: 10 Thanked 2 Times in 1 Post	Thanks for the quick reply. Firstly, i have no tuning box fitted. I purchased a complete Bosch unit from a dealer..Symptoms wise, On start up i have an engine management light on permanent, but car runs and pulls fine, then randomly a second light comes on and i lose power under 2-2500 revs. I am having a ton of black smoke periodically and the rear bumper is getting caked in soot. If i pull over and turn off and restart the engine, it will reset and away we go, clear again. I have noticed when climbing a hill on way to work, it brings the light on almost always in the same place. Another query, the turbo duct that connects to the maf has a rubber seal and pushes on, should there be a similar one for the bottom of the hose where it connects as there isnt. I have spoken to a mechanic and he says it is possibly a leaking turbo pipe? How long is it safe to run with the maf disconnected? Thanks so much for your input...

18th November 2018, 15:20	#26
adonisuk Newbie ROVER 75 Join Date: Jun 2018 Location: WORKSOP Posts: 10 Thanks: 10 Thanked 2 Times in 1 Post	Thanks again, without the risk of sounding like a total div, i assume T4 is a diagnostic machine? Is it a specific one or just get it on any diagnostics. Im near worksop Notts, do you recommend anyone in the S. Yorks area? Really appreciate your help guys...

18th November 2018, 15:36	#27
CLINTE Loves to post Rover & MG less Join Date: Mar 2016 Location: ELLESMERE PORT Posts: 320 Thanks: 44 Thanked 97 Times in 90 Posts	Try Stevestrat's t4 location Map use search function on here to locate post

19th November 2018, 15:52	#29
adonisuk Newbie ROVER 75 Join Date: Jun 2018 Location: WORKSOP Posts: 10 Thanks: 10 Thanked 2 Times in 1 Post	DMGRS...do you sell these? (the one with the yellow dots) Update...Had EGR off and tested seemed to be working ok but caked in NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-NAUGHTY WORD-. Cleaned and put back and so far so good, but i havent really done any miles since...booked in for T4 on monday..