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General Information => Troubleshooting => Topic started by: dtech on November 19, 2007, 12:04:10 am

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: dtech on November 19, 2007, 12:04:10 am

I have an active fault code for map sensor! (losing boost intermittantly)

Can anyone help?

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: MikkiJayne on November 19, 2007, 03:57:17 am

It's built in to the ECU which lives under the rain tray at the bottom of the windscreen.

Mikki x

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: dtech on November 19, 2007, 04:59:09 am

Cheers mate.

So is that a new ECU then?

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: MikkiJayne on November 19, 2007, 05:41:40 am

Not necessarily. I'm pretty sure you can buy the MAP sensor on it's own, as you can get uprated versions, and the Megasquirt gas standalone uses various different types too.

You don't say if yours is 1Z or AHU, but the Bosch number for the sensor in the 1Z ECU is 0 273 003 212. If you have an AHU let me know as I have a spare ECU I can look at to save you taking yours apart if it's still on the car  :wink:

It may be worth checking with the Megasquirt suppliers and forums to see if one of theirs is compatible. Also have a search for DigiKey as they supply the individual components for the MS.

Mikki x

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: dtech on November 19, 2007, 08:17:53 am

Thanks mikki,

Mines the AHU version. If you can do that, will be much appreciated!

Title: Mk3 1.9TDi...wheres the MAP sensor??
Post by: MikkiJayne on November 20, 2007, 09:44:51 am

The AHU map sensor is Bosch number 0 273 003 210, also 250KPa.

Actually the two sensors look pretty much identical, and are the same range, so I'd guess they're compatible.

Good luck  :)