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Adjusting Idle on a MK1 VW Cabriolet
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- Опубликовано: 9 июн 2021
- A quick explanation of how to adjust the idle on a Mk1 Volkswagen. This specific demonstration is on a 1988 VW Cabriolet but is similar on just about every CIS VW.
Here are links to the o-ring assortments I purchased from Harbor Freight:
Viton O-Ring Assortment:
www.harborfreight.com/180-pie...
Nitrile O-Ring Assortment:
www.harborfreight.com/225-pie...
Here is a link to the Ratcheting Multi-Bit Screwdriver I purchased:
www.lowes.com/pd/CRAFTSMAN-10...
Nice video. I'm glad you mention at 3:41 about vacuum leaks and co2 mixture with a dwell meter (or multi meter for DPR). Of course there are a handful of other issues that could cause poor idle but this is a good video for showing the air bypass at the throttle body. At 7:32, that rubber seal, rather than buying a multi seal kit at Harbor Freight, the Danco #47 O ring at 11/32" od dia. x 7/32" id dia. x 1/16" is a perfect fit. At 9:21 glad you explain the proper adjustment for the butterfly valve.
great info
I was having some problems getting my car to idle and it stalling when coming to a stop and this fixed it. Thank you very much.
glad it helped
Keep these videos coming! Just got a 92 Carat and this helps me immensely.
will do and congrats
Thank you for your videos. The have been extremely helpful with my son's '88 Cabriolet (new to us in March '23).
great, enjoy it!
Would this apply for a 1986 Volkswagen Jetta MK2, bought it last year as a project car and I've seen to hit a wall and can't proceed any further. I'm learning as I go.
Great info, saving me a lot of time and headache. Thank you.
Glad it helped
Thanks for the great content! Would love to see more mk1 Cabriolet vids.
More is coming!
Thank you so much for making this video I have a mark 3 generation cabrio
Thank You so much for taking the time to make this video.You answered alot of my questions about that particular throttle body.Keep the great mk1 content coming!👍
You are welcome
Hi my question is does the nail have to go completely in or half way in because I've been moving it and the car shut down and I haven't been able to turn it back on. Do you have any advice?
Thnx I liked the detailed explanation was looking for someone to explain that
glad it helped
Many thanks- Every things are clear ===
Good videos man!
Glad you like them!
Thnk yo so much bro appreciate
Happy to help
The idle adjustment screw is the other screw on the throttle body.
So from my experience - if that brass adjustment screw isn't sticking out then you DO adjust the idle with the screw and the keeper nut. My throttle body had the air bypass sealed off and that adjustment screw channel was sealed off as well.
good to know
Hi ,i installed a neuspeed throttle body with out the neuspeed adapter plate (i don’t have it) and the engine keep’s in high idle about 1500/1800 rpms ,i adjusted the idle screw to full thight and i can’t lower the idle , is that because the lack of adapter plate? Regards
I don't think the lack of the plate would cause the high idle issue.
Will this adjustment work on a 1993 vw cabriolet digifant fuel injected engines. Also what the size of the o ring you got from Harbor freight. Thanks
I don't remember the specific size but I just bought an assortment for less than $5. www.harborfreight.com/225-piece-metric-nitrile-o-ring-assortment-67609.html
nice explanation. just curious, why would i want to raise or lower my idle on my mk2 86 8v cis e? i have the screw all the way in, and ive driven it with it opened a bit and im not sure how i liked it, the screw all the way in is how my car ran the best all of the time, why would some one want to change this besides modifying the engine?
It is just one of the adjustments that contributes to betting the idle at the factory recommended rpm. You typically wouldn't want a higher idle just for the sake of a higher idle.
Why doesn't mine have an adjustment screw???
I decreased mine all the way down and my motor still idles high. What could be the issue?
The o ring seal on that screw itself is bad replace it
What should idle rpm speed be for a cabriolet I can’t find any answers
Just under 900rpm for K-Jet......think Digifant is 800 +/- 50 rpm.
@@ShinyFastLoudcould the fuel mixture solve the issue of flooding when dropping to correct idle cause mine runs at 1000 then once it drops to 900 it dies out and smells of gas and won’t start again till I let the car sit
@@ShinyFastLoudI’m pretty sure I have no vac leaks I have fuel spark and air and it’ll run to operating temp high idle but when it goes down it dies and I replaced my fuel pump recently and re wired it since it was finicky and figured this may solve my issue I’m currently waiting on a dwell meter to adjust the fuel mixture when it comes in but figured I’d ask someone familiar with the car
whot from you trottle body come from ?