Anyone got a known working 5AM I can borrow?

[Chuffmeister]

I'm halfway there with bits for my MS upgrade, but a recent multifuel stove install has polished off all my spare cash, so I would like to try and resolve the current longterm trim issues on my Chim running 14CUX.

I read on another thread that somebody replaced their AFM and it resolved the issue? The strange thing is, that when I was putting the car together a couple of months ago, the longterm trim started to work okay. Now it is back to -100% and running rich. I thought it may have been a loose connection to the lambda heater circuit, so I tried changing the relays and pushing in the wiring in the footwell, but no change. Perhaps a different AFM may resolve the issue or at least rule it out. Has anybody got a known working one they could loan me?

Cheers
Chuffy

[blitzracing]

Its worth just unplugging the AFM, then checking the long term trim is back to zero. Then let it idle on a hot engine for about 3 mins and see if it goes to maximum again. Check the AFM reading at idle for your engine size with Rovergauge- if its out it will be quite obvious. I think from memory a 5ltr is 35%

[ChilliWhizz]

I have my old AFM, been sitting in the bits box now for over three years...

[Chuffmeister]

blitzracing said:

Its worth just unplugging the AFM, then checking the long term trim is back to zero. Then let it idle on a hot engine for about 3 mins and see if it goes to maximum again. Check the AFM reading at idle for your engine size with Rovergauge- if its out it will be quite obvious. I think from memory a 5ltr is 35%

Do you mean unplug it whilst the engine is running?

[Chuffmeister]

ChilliWhizz said:

I have my old AFM, been sitting in the bits box now for over three years...

Does it work Chilli?

[phazed]

I have one also on the shelf.

[blitzracing]

Chuffmeister said:

blitzracing said:

Its worth just unplugging the AFM, then checking the long term trim is back to zero. Then let it idle on a hot engine for about 3 mins and see if it goes to maximum again. Check the AFM reading at idle for your engine size with Rovergauge- if its out it will be quite obvious. I think from memory a 5ltr is 35%

Do you mean unplug it whilst the engine is running?

Nope- I mean just reset the ECU by unplugging it with the ignition Off and then reconnecting it. This removes the 12 volt supply to the memory that holds the long trim value, so it resets to zero, to give you a level playing field before it re-trims when the engine is hot. If a sensor input is wrong like AFM or temp, you can watch it move over a couple of minutes until it hits 100% again. Then at least you know its not some sort of glitch. Certainly a few percent shift in AFM output voltage is enough to throw the trim out.

[ChilliWhizz]

Chuffmeister said:

ChilliWhizz said:

I have my old AFM, been sitting in the bits box now for over three years...

Does it work Chilli?

Dunno mate but hopefully yes, it was working fine when all the gubbins were replaced with the MS2...

I see Peter has one too, he'll be a good bit closer than me I'm in darkest Narferk.. but you're very welcome to use it

[ChimpOnGas]

I've got a good one here in Watfordshire if that's any use to ya Chuffmuncher ?

[Chuffmeister]

Cheers fellas, for the offers... a few options. I'll unplug the ECU again and clean/ reconnect the Lambda extenders in the bay area at weekend and see if it solves the problem. Otherwise, at least one of you can expect a PM!!!

[Dr Mike Oxgreen]

Chuffmeister said:

I'm halfway there with bits for my MS upgrade, but a recent multifuel stove install has polished off all my spare cash

Interesting mod. I've never heard of anyone doing that. Weight will be a bit of an issue, and I think it's going to get incredibly hot in the car. Are you routing the flue out of the passenger window, or cutting a hole in the targa roof?

[brett84]

I've got a working one as well if you the others suddenly aren't available

Ps what wheels do you have? I like them on the silver and i'm looking for new ones

[Chuffmeister]

I wish Super Unleaded grew on trees!

Brett, thanks for the offer. The wheels are SP12's. 18" rears and 17" fronts.

[QBee]

Dr Mike Oxgreen said:

Chuffmeister said:

I'm halfway there with bits for my MS upgrade, but a recent multifuel stove install has polished off all my spare cash

Interesting mod. I've never heard of anyone doing that. Weight will be a bit of an issue, and I think it's going to get incredibly hot in the car. Are you routing the flue out of the passenger window, or cutting a hole in the targa roof?