Success!! The Disco started

[Philip Lochner]

I am MOST relieved to report that the Disco started Getting all relevant relays to co-operate took a bit of time...
 
Having been able to measure cranking pulses, idle pulses when cold and and when warm (with the car running on the original ECU) did help.
 
Its late at night at the bottom of Africa so I could not do much tuning but already I've got idle AFR from below 10 (misfiring) up to around 13 at idle - although she did develop a serious idle hunt just before I called it a night.  It was interesting to note how the idle speed climbed every time I made it more lean (moving closer to 14.7)
 
She does seem to start quicker than with the OEM ECU but I do believe the OEM ECU allows cranking without fuel to enable oil pressure to build before supplying fuel.
 
Thanks to all who helped this newby get to this point!
 
Kind regards
Philip
 
 
 

Posted by email.

[mops]

sounds good.
what car ?

[rb26dett]

I believe the vehicle is a LandDrover DISCOvery i read way to many
of these emails...

fred.
Posted by email.

[Philip Lochner]

Sorry, in my exitement it did  not occur to me that not everyone may know that "Disco" is abbreviation of Land Rover Discovery.
 
In my case it is a '95 3.9V8i (Manual) model into which I installed a 4.6 imported from RPI in the UK.
 
This morning I did a "cold start" (20degC) and it started without problems.
 
Kind regards
Philip Lochner
 
From: mops [mailto:mops@ihug.co.nz] 
 
 sounds good.
what car ?



Posted by email.

[Philip Lochner]

Yesterday, I experienced for the first time the amazing thing called Autu-tune!

I was able to tune most values up to 3500rpm in driving on the road. Higher than that becomes a problem as I don't have hills steep enough / long enough to provide a large enough load while keeping speeds reasonable. I only used up half my brake pads and lost brakes at one point It is most rewarding to see the AFR needle spending so much time above 14 whereas before it was the exception and not the rule.

I'm having a hard time with acceleration enrichments though...

Can't say I'm too happy with what IAC is doing. I can't seem to make it behave consistenly despite making sure it opens all the way.

[Hans]

Phil, are you still using the factory oxygen sensors? Some folks in the past have had issues trying to tune it in with the Titania sensors that Land Rovers in the UK and US come with. Do the South Africa trucks use the same? If so, you might want to consider converting to the Zirconia sensors which seem to be a lot more compatible with Megasquirt.

Also, I think the IAC in this case has rather large steps to it, at least mine always appeared to with the factory ECU. I eventually want to convert over my Defender, but will wait till next year when I hopefully don't have to deal with emissions testing anymore.

-Hans

[Philip Lochner]

Phil, are you still using the factory oxygen sensors? Some folks in the past have had issues trying to tune it in with the Titania sensors that Land Rovers in the UK and US come with.

-Hans

Hi Hans

No, I'm using Innovate LC-1. Our cars came WITHOUT any O2 sensors and low compression (8.35:1) engines because of the crappy fuel we have here at the bottom end of Africa.