Mil Eliminator Help

The Oily Bits S2 Specific Topics
1

I’ve had a dodgy idle for years. Essex mapped the car yesterday (no new head yet btw just keeping it safe) and also sorted the idle simply telling me the before and after O2 sensors were the wrong way around. Cars mapped and the idle is great. When home and the MIL came on, P0171 Running Lean and P0627 Fuel Pump Control Circuit /Open.

Anyway, Wayne swooped the O2 sensors around but kept my MIL eliminator in the post cat near side exhaust hole. The question I have is who else uses one of these and which sensors do you eliminate pre or post cat. I�m sure the answer is simple by changing swapping around the steel eliminator, I just need clarification that what I was doing for years was wrong.

Cheers :slight_smile:

2

The MIL eliminator should go post cat.

When I fitted mine, the MIL light came on a few days later but then simply went off again. Never been on since.

3

Oooooh, I need one of those jobbies. Where might I purchase such a thing? Had enough of passangers pointing out the engine light to me :wink:

4

http://www.jperformance.co.uk/universal-mechanical-cel-eliminator-02-fix-sensor-housing-p-201.html

Here you go.

5

[quote=N17VES]The MIL eliminator should go post cat.

When I fitted mine, the MIL light came on a few days later but then simply went off again. Never been on since. [/quote]

Yep this is what happened before, I thought post Cat.

Totally Confused!

6

[quote=jonnyfox][quote=N17VES]The MIL eliminator should go post cat.

When I fitted mine, the MIL light came on a few days later but then simply went off again. Never been on since. [/quote]

Yep this is what happened before, I thought post Cat. [/quote]

The sensor post cat does nothing but check if the cat is working. The pre cat sensor is what adjusts the mixture. If you’ve got try OBD reader, try resetting the light to see if it stays off.

Thinking about it, could be dodgy O2 sensor if wayne has simply swapped them over…would explain the poor idle?!

7

Both new

8

Try reset first then…

9

…lol had fiddle with both wires to and from just (as well as driving it to work) :confused: OFF!

Cheers anyway :wink: :smiley:

10

when you say wayne i assume you mean sincs?
if so he trick wired my post cat sensor when I fitted de cat
took all of two mins. with sensor out

11

Cheers Mr Fox. One winging its way to my house now, will be nice to get that bugger sorted :smiley:

12

How did they end up the wrong way round ? I’m sure the leads on my car wouldn’t be long enough to do that .

13

Jonny, i’ve used the 02 sensor spacer on a few cars, and it definately goes in the secodary lambda hole. It just spaces the sensor out of the exhuast gas flow enough for it to read a value which the ECU is expecting.

14

Yea yea I know it’s been in for over two years and worked well albeit the dodgy idle no Mil light. That’s why it vexed me that it should come on after changing it around…anyway it’s off now and I’ve cleared the fault. I’ll drive again to work tomorrow and see what happens.

How it came to be must of been a few years back when the idle was proper looney before JSR it went to a none specialist. Tbh idle problems are a fecker to find on all the research I’ve done and I tried bloody everything so I really am mighty chuffed.

Car was running very lean so lucky it went for mapping just a shame the heads not ready.

15

so what did you make on the dyno? Or is it a secret?

16

No great shakes, ask me in July :wink: