turbo question - theMGZR.co.uk :: MG ZR forum
Go Back   theMGZR.co.uk :: MG ZR forum > Modding and Help > Diesel Advice & Tuning
Register FAQ Calendar Mark Forums Read Advertise

Reply
 
LinkBack Thread Tools Display Modes
Old 11-09-2010, 14:37   #1 (permalink)
 Fletch
Senior Member
 
Fletch's Avatar
 

Posts: 245
Location: Worcestershire
Join Date: Mar 2006
iTrader: 1 (100%)
Thanks: 0
Thanked 0 Times in 0 Posts
Fletch is on a distinguished road
turbo question

iv never had a TDI before and when i get it going in the zed. it seems to fade really bad at 3k and wont rev any higher is this normal ?
Fletch is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-09-2010, 14:39   #2 (permalink)
Oh hai v6
 
lukeus101's Avatar
 

Posts: 5,391
Location: Yorkshire (West)
Drives: ZS 180 & Focus ST3
Join Date: May 2009
iTrader: 12 (100%)
Thanks: 0
Thanked 1 Time in 1 Post
3 Images (3)

lukeus101 is on a distinguished road
My Garage
Send a message via MSN to lukeus101
MAFAM might be the cause
lukeus101 is offline   Reply With Quote
Old 11-09-2010, 14:44   #3 (permalink)
 Fletch
Senior Member
 
Fletch's Avatar
 

Posts: 245
Location: Worcestershire
Join Date: Mar 2006
iTrader: 1 (100%)
Thanks: 0
Thanked 0 Times in 0 Posts
Threadstarter
Fletch is on a distinguished road
so it may be somthing to do with the map u think?
Fletch is offline   Reply With Quote
 
Old 11-09-2010, 14:45   #4 (permalink)
Oh hai v6
 
lukeus101's Avatar
 

Posts: 5,391
Location: Yorkshire (West)
Drives: ZS 180 & Focus ST3
Join Date: May 2009
iTrader: 12 (100%)
Thanks: 0
Thanked 1 Time in 1 Post
3 Images (3)

lukeus101 is on a distinguished road
My Garage
Send a message via MSN to lukeus101
Possible. Maybe could do with a service
lukeus101 is offline   Reply With Quote
Old 11-09-2010, 14:52   #5 (permalink)
 Shammy
Senior Member
 
Shammy's Avatar
 

Posts: 1,304
Location: Edinburgh
Drives: Astra SRi 150
Join Date: Nov 2009
iTrader: 2 (100%)
Thanks: 0
Thanked 0 Times in 0 Posts
Shammy will become famous soon enough
Send a message via MSN to Shammy
Definitely not normal, I think that is the MAFAM issue. I'm sure one of the diesel heads will be around to tell you how to fix it, don't think it's that expensive.

How many miles has it done? The MAFAM degrades with mileage.
Shammy is offline   Reply With Quote
Old 11-09-2010, 16:13   #6 (permalink)
Oh hai v6
 
lukeus101's Avatar
 

Posts: 5,391
Location: Yorkshire (West)
Drives: ZS 180 & Focus ST3
Join Date: May 2009
iTrader: 12 (100%)
Thanks: 0
Thanked 1 Time in 1 Post
3 Images (3)

lukeus101 is on a distinguished road
My Garage
Send a message via MSN to lukeus101
A new MAFAM is about £150 iirc
lukeus101 is offline   Reply With Quote
Old 11-09-2010, 16:26   #7 (permalink)
Senior Member
 
Catterall1's Avatar
 

Posts: 328
Location: Greater Manchester
Drives: R25 TD-160
Join Date: Sep 2008
iTrader: 0 (0%)
Thanks: 0
Thanked 0 Times in 0 Posts
Catterall1 is on a distinguished road
If the car actually wont physically rev past 3,500 then it could be a maf sensor issue.

If it just seems to slow down and not deliver the same performance then tbh that seems pretty normal to me on standard injectors.

Remember you are not driving a petrol so shouldnt really be reving to 4,500 rpm in every gear, the torque does trail off really quickly with the standard setup



Some SDI injectors will really increase performance throughout the rev-range.

PS. The MAF sensor is I think what you mean.
The MAFAM is an adjustable box which varies the signal from the Pieburgh Maf. One is not necessary and even fitted when using an OE bosche MAF sensor... Unless the standard MAF sensor has deteriorated in which case it could help boost he signal.


EDIT:
The map will be fine.

EDIT:
To check if the MAF is knackered, just unplug it and take it for a test drive. However it wont rev past 4000rpm when its unplugged.

Last edited by Catterall1; 11-09-2010 at 16:31.
Catterall1 is offline   Reply With Quote
Old 11-09-2010, 18:00   #8 (permalink)
 Fletch
Senior Member
 
Fletch's Avatar
 

Posts: 245
Location: Worcestershire
Join Date: Mar 2006
iTrader: 1 (100%)
Thanks: 0
Thanked 0 Times in 0 Posts
Threadstarter
Fletch is on a distinguished road
o right ok thanks guys... ill let u know what i find
Fletch is offline   Reply With Quote
Old 12-09-2010, 09:24   #9 (permalink)
Senior Member
 
HutchyP's Avatar
 

Posts: 476
Location: Hampshire
Drives: MG ZR 2.0 TD
Join Date: May 2010
iTrader: 0 (0%)
Thanks: 0
Thanked 0 Times in 0 Posts
HutchyP is on a distinguished road
My Garage
I recently had to unlpug my MAF sensor because it was faulty, which I believe does restrict the revs by default. I replaced it and it's a different car now.

Check the connections to the MAF sensor are good. If no luck there you could try unplugging it and work on the assumption that if it runs better the sensor is no good, if it's worse it probably isn't that, and if there's no change it maybe wasn't connected properly.

If you've only just got the car and it's been like it since could it be that the previous owner disconnected it?? Just a thought.
__________________
HutchyP is offline   Reply With Quote
Old 13-09-2010, 11:57   #10 (permalink)
 p_b82
Member
 

Posts: 230
Location: England
Drives: ZS+ TD 170
Join Date: Jun 2008
iTrader: 0 (0%)
Thanks: 0
Thanked 1 Time in 1 Post
p_b82 is on a distinguished road
just to say, that RoverRon no longer makes a MAFAM anymore as you can get a direct replacement pierburg one for less - with the IAT - which was missing from them in the past.

eurocar parts have got a few options on MAF's from dirt cheap copies to OE bosche items.

I would say check MAF sensor and if that then has no effect it would be the plug\wiring from the pump to number 1 injector.
p_b82 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
zr turbo question garry_noble Engines, Exhausts,Gearbox,Tuning,Induction,Cooling 8 23-08-2010 10:27
Quick Turbo Coversion Question Daz! Engines, Exhausts,Gearbox,Tuning,Induction,Cooling 7 28-01-2010 13:49
Bristol's turbo conversion thread! Bristol Members Cars MG ZR only 234 18-01-2010 22:54
Exam Fail akaJAY7 Off Topic 11 07-09-2009 15:45
TURBO IN A ZR160 1.8 16V VVC...ITS POSSIBLE WITH INTERNALS STOCK? MGZRDUB General MG ZR Discussion 9 09-06-2009 22:16


All times are GMT +1. The time now is 05:48.



Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©2004 - 2014 theMGZR.co.uk Ltd 06371623

The theMGZR.co.uk logo is registered with the UK Copyright Service: 285179

 

Garage vBulletin Plugins by Drive Thru Online, Inc.