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DISCUSSION => Engine + Driveline => Topic started by: JoeDellio on July 01, 2009, 03:52:48 PM

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: JoeDellio on July 01, 2009, 03:52:48 PM

I got sent the wrong one, but I threw it in just to test things. I cant smell any fuel or anything, but since its suppose to have a 3.0 bar FPR am I inviting trouble?

Stupid question?

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: 1991 E30 M42 on July 02, 2009, 02:35:03 AM

it will work just fine once the ecu adapts

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: JoeDellio on July 02, 2009, 03:43:06 AM

cool, thanks. I was thinking it would just fire the injectors normal, but with a higher pressure they would dump more fuel.

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: Deftones on July 02, 2009, 01:41:38 PM

if you disconnect the O2 sensor it will do so

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: JoeDellio on July 02, 2009, 06:01:15 PM

Quote from: Deftones;74709

if you disconnect the O2 sensor it will do so

What do u mean? If I disconnect the O2 it will adjust to it? Im not sure what you meant. Can you please clarify that for me?

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: B318M42W on July 02, 2009, 10:59:54 PM

the O2 sensor will tell the ECU to rich/lean the mixture. so if you disconnect the O2 sensor, the ECU won't be able to adapt to it and you will send fuel into your exaust...

Title: Verification that a 3.5 bar FPR wont run right on the M42?
Post by: JoeDellio on July 03, 2009, 02:07:23 AM

Quote from: B318M42W;74736

the O2 sensor will tell the ECU to rich/lean the mixture. so if you disconnect the O2 sensor, the ECU won't be able to adapt to it and you will send fuel into your exaust...

ah, ok, I didnt know that he meant that.

I should maybe try looking into O2 sensor electrically.

What ways could I test the sensor and the harness themselves? My car is running pig rich as if it was dead or unplugged.