Pumapeople: Mha And Mhb - Pumapeople

Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

Mha And Mhb Differencies Rate Topic: -----

#1 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 29 November 2008 - 04:38 PM

Hello
Does somebody know the exact diferencies between the MHA and the MHB variant of the 1.7 engine??
Waiting for an answer ASP
Kind regards Radu

#2 User is offline   YOG 

  • Group: Members
  • Posts: 2928
  • Joined: 30-August 07
  • Location:West Sussex

Posted 29 November 2008 - 06:00 PM

I think they have different engine management and emission control systems:
MHA - EEC V:
http://vehicle.me.berkeley.edu/mobies/powe...t/EECVp3-4.html

MHB - EOBD
http://www.autodiagnostech.com/admin/upload/12112090.pdf

Rick

The Haynes Fiesta Manual (3397) can answer a lot of your questions.
Posted Image

#3 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 29 November 2008 - 06:18 PM

Hmmmmmmmm
Both have eecV as engine management
Both Have OBD sad.gif(
My question is simple
1 have 2 engines 1 MHA 1 MHB
I want to swap the MHB in the MHA place using MHA engine electric loom, MHA exhaust maniflood and catalizateur and 1 Hego senzor, MHA ecu + key and so on, MHA gear box
Is that all i need to do?
Kind regards Radu


QUOTE (YOG @ Nov 29 2008, 06:00 PM) <{POST_SNAPBACK}>
I think they have different engine management and emission control systems:
MHA - EEC V:
http://vehicle.me.berkeley.edu/mobies/powe...t/EECVp3-4.html

MHB - EOBD
http://www.autodiagnostech.com/admin/upload/12112090.pdf



#4 User is offline   dave208 

  • Group: Members
  • Posts: 904
  • Joined: 15-July 08
  • Location:Leicestershire

Posted 29 November 2008 - 07:50 PM

How do you find out which one you have then ???
Im just curious, is there any difference ?

#5 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 29 November 2008 - 08:24 PM

You have a code on the engine that's first
Then MHA has 1 hego sensor and analog dials
The MHB has 2 hego and digital dash
I want to use all MHA loom gear box and so on on the MHB engine
biggrin.gif
Kind regards Radu
QUOTE (dave208 @ Nov 29 2008, 07:50 PM) <{POST_SNAPBACK}>
How do you find out which one you have then ???
Im just curious, is there any difference ?



#6 User is offline   happy-kat 

  • Group: Admin
  • Posts: 21804
  • Joined: 10-February 03

Posted 29 November 2008 - 09:35 PM

not quite true

you can get one hego on digital dash
searching is fruitful | I'm a sponge not a mechanic | please do try that if stuck with a Puma problem whilst waiting for a reply | For the Puma fan this read 'The Inside Story Book' is very nice to own sometimes still seen for sale

#7 User is offline   mattpendle 

  • Group: Members
  • Posts: 343
  • Joined: 30-June 08
  • Location:Epsom

Posted 29 November 2008 - 09:38 PM

QUOTE (happy-kat @ Nov 29 2008, 09:35 PM) <{POST_SNAPBACK}>
not quite true

you can get one hego on digital dash



Yeh, that's the setup I have, glad you said that!

#8 User is offline   YOG 

  • Group: Members
  • Posts: 2928
  • Joined: 30-August 07
  • Location:West Sussex

Posted 29 November 2008 - 09:57 PM

This is the info from the Crypton website, page 34:
Model Variant Engine Code Years System
Puma 1.7 MHA 1997-on EEC V
Puma 1.7 MHB 1999- EOBD

http://www.cryptontechnology.com/acatalog/...List%203.30.pdf



This post has been edited by YOG: 29 November 2008 - 09:59 PM

Rick

The Haynes Fiesta Manual (3397) can answer a lot of your questions.
Posted Image

#9 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 30 November 2008 - 08:29 PM

Hmmm
I understand but my question still remains
Does the MHB works on MHA ecu,loom,gearbox,exhaust maniflod
all the sensor are he same isn't it?
Waiting for a word from you all biggrin.gif
Kind regards Radu

#10 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 02 December 2008 - 02:34 PM

So anybody i have to do the conversion on saturday and i need to know biggrin.gif
Offcourse i'll post the results biggrin.gif
Kind regards Radu

#11 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 08 December 2008 - 08:39 PM

So the mistery has been solved
If you want to change an MHA engine with an MHB engine but to keep all from the MHA you need
MHB engine with or without gearbox
MHA engine loom both parts
MHA fuel rail including MHA injectors
MHA water cooling block the one below the coil
MHA catalitic converter with exhaust maniflood and 1 HEgo senzor
MHA ecu
MHA key and PATS
MHA millage conector
So basicaly i put an MHB engine in a MHA car keeping all MHA wirring
Everithing work engine started at half key
My friend is very happy me also biggrin.gif:D:D:D
Work time ~ 20 Hours with a full service making all fluids and filters changed
Kind regards Radu

#12 User is offline   happy-kat 

  • Group: Admin
  • Posts: 21804
  • Joined: 10-February 03

Posted 08 December 2008 - 09:47 PM

thanks for sharing, good information to add to the Wiki biggrin.gif
searching is fruitful | I'm a sponge not a mechanic | please do try that if stuck with a Puma problem whilst waiting for a reply | For the Puma fan this read 'The Inside Story Book' is very nice to own sometimes still seen for sale

#13 User is offline   Maddogul 

  • Group: Members
  • Posts: 10
  • Joined: 25-June 06

Posted 08 December 2008 - 09:52 PM

Glad to contribute to your Wiki since i learned and i still have to learn a lot from you guys
Cheers with an ice cold lager biggrin.gif from Romania
Radu over and out for tonight
biggrin.gif

#14 User is offline   BOK 

  • Group: Members
  • Posts: 10212
  • Joined: 18-February 03
  • Location:Oxon

Posted 09 December 2008 - 09:16 PM

QUOTE (YOG @ Nov 29 2008, 09:57 PM) <{POST_SNAPBACK}>
This is the info from the Crypton website, page 34:
Model Variant Engine Code Years System
Puma 1.7 MHA 1997-on EEC V
Puma 1.7 MHB 1999- EOBD

http://www.cryptontechnology.com/acatalog/...List%203.30.pdf




If mine's registered 2000 and built 1999 it could be either unsure.gif

#15 User is offline   alerno 

  • Group: Members
  • Posts: 5
  • Joined: 28-January 15

Posted 11 November 2021 - 07:41 PM

Glad about your change. May I ask you: I have a different problem. I don't know if my car is MHA or MHB (I bought it in Germany, registered in April 2000). How can you physically tell/see an MHB engine from an MHA? Apparently here in Catalonia I am not allowed to drive it (environmental emissions) if it is MHA. I thought it was the same engine simply adding two lambdas, one in front one behind of the catalyst,

Any info would be gold.

View PostMaddogul, on 08 December 2008 - 09:52 PM, said:

Glad to contribute to your Wiki since i learned and i still have to learn a lot from you guys
Cheers with an ice cold lager Posted Image from Romania
Radu over and out for tonight
Posted Image


#16 User is offline   Ian G 

  • Group: Admin
  • Posts: 1828
  • Joined: 28-May 09
  • Location:Merseyside

Posted 13 November 2021 - 03:51 AM

The MHA/MHB designation forms part of the engine number marking

http://www.pumapeopl...image&img=10471

The engine is largely similar but the second lambda plays a part in the emissions as it monitors the efficiency of the cat - without it the cat may fail and you would not know. With it you will get an engine management light and P0420 catalyst efficiency fault code.

Post the VIN if you have it, it can also be checked on build date.

Share this topic:


Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic