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old R90e converter 

 

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 Post subject: old R90e converter
Posted: Wed Dec 11, 2013 9:17 pm 
Getting Side Ways
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Posts: 596

Joined: 4th May 2007

Ride: 1992 EBII Fairmont

Location: Aga
VIC, Australia

Hey guys my brand new r90e is defective so I have put the old one back in. Now it won't start on gas but I can get it running when I flick it over (almost stalls for the first 5 seconds then just kicks in and runs perfect :? ). Runs like crap on petrol for a few hours after trying LPG as well, hunts all over the place to a stalling point but that's another story (goes way a day or so of not running LPG)

I was going to take it down to the local shop for a tune but when I gave it the backyard tune I noticed the little 8mm top screw didn't do anything, infact it never gets tight, I can turn it infinitely inwards so I think it's broken? Doesn't seem to change idle or adjust anything either.

The bigger bottom one with the spring around it (called the bypass I think) is weird as well. I turn it out around 2 full turns about where the car will stop stalling and start to idle fine (it won't run below 2 turns out) but the thing is I can keep going all the way to like over 6 turns to the very end and the car still runs the same as it does with 2 turns out... It's more of an on/off switch than an adjusting screw, there's no variance doesn't seem normal at all. Is this a normal thing to happen to a 16 year old converter, I don't understand how the screws can be like this?

Last thing I want to do is have to pay for another tune on another stuffed converter I've just been through all that with the previous one (which was a $220 moot dyno tune).

Any advice would be greatly appreciated!!
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 Post subject: Re: old R90e converter
Posted: Sun Dec 29, 2013 5:18 am 
Getting Side Ways
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Posts: 596

Joined: 4th May 2007

Ride: 1992 EBII Fairmont

Location: Aga
VIC, Australia

I've got it going a treat, the smaller 8mm screw is rooted but the 10mm with the spring around it was all I needed, once I managed to get it idling it was only a matter of turning that big screw in until the car started idling poorly, nipped it back a little until good idle and it seems to be driving great. But I'm left wondering if I should be concerned about leaning out the motor/valves given such a crude tune.

Funny thing is I went to randomly adjust the stepper motor and it's completely screwed in, I just got it dyno tuned as well :? the car seems to splatter and run like crap for the first few seconds after starting/swapping to lpg I need to keep the revs up to prevent a stall and 10 seconds or so later the power will kick in and it runs beautifully, almost like the lpg in the lines is stale it's bizarre. But it runs!!
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