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Old 07-08-2018   #1
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Help needed guys and gals, I have a Twinair running issue

Iím hoping someone is clued up enough or has had or has heard of an issue, and can suggest a potential fix 🤞🏼
Basically my partners Twinair out of the blue last week decided that as soon as you put your foot down out of eco mode, and it comes on boost, it feels like it kinda splutters (sorry best way I can describe it) and wonít accelerate at all until you back off the throttle, yet in eco mode it doesnít appear to do it
Iíve always loved the car because of the little nod to the original 500 and itís little put put engine, and Iíve even had a few 126s and plan to get another one day, but recently the Twinair has been a royal pain in my arse!!

Any help greatly appreciated guys
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Old 08-08-2018   #2
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Re: Help needed guys and gals, I have a Twinair running issue

In your shoes I would be thinking is oil regularly changed (0w 30 C2 or similar regardless of age every 9k miles or yearly), air filter, new plugs. Do you use supermarket fuel or drive like Miss Daisy? Does the car get a hot 30 mile run out every week minimum? Fuel cleaner and super unleaded good start with an Italian tune up (trust me you'll notice the difference). And keep the eco button off. After that consider having it looked at.
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Old 08-08-2018   #3
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by UnderWaterDuckJuggler View Post
Iím hoping someone is clued up enough or has had or has heard of an issue, and can suggest a potential fix 🤞🏼
Basically my partners Twinair out of the blue last week decided that as soon as you put your foot down out of eco mode, and it comes on boost, it feels like it kinda splutters (sorry best way I can describe it) and wonít accelerate at all until you back off the throttle, yet in eco mode it doesnít appear to do it
Iíve always loved the car because of the little nod to the original 500 and itís little put put engine, and Iíve even had a few 126s and plan to get another one day, but recently the Twinair has been a royal pain in my arse!!

Any help greatly appreciated guys
sounds like a sensor perhaps, might be best to get some diagnostics run to save you chasing your tail
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Old 08-08-2018   #4
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Quote Originally Posted by UnderWaterDuckJuggler View Post
Iím hoping someone is clued up enough or has had or has heard of an issue, and can suggest a potential fix 🤞🏼
Basically my partners Twinair out of the blue last week decided that as soon as you put your foot down out of eco mode, and it comes on boost, it feels like it kinda splutters (sorry best way I can describe it) and wonít accelerate at all until you back off the throttle, yet in eco mode it doesnít appear to do it
Iíve always loved the car because of the little nod to the original 500 and itís little put put engine, and Iíve even had a few 126s and plan to get another one day, but recently the Twinair has been a royal pain in my arse!!

Any help greatly appreciated guys
Is it uk based?
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Old 08-08-2018   #5
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by varesecrazy View Post
Is it uk based?


Yes mate, down in sunny Cornwall
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Old 08-08-2018   #6
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by Mercky View Post
sounds like a sensor perhaps, might be best to get some diagnostics run to save you chasing your tail


Sorry I shouldíve mentioned that, it was the first thing I tried but thereís no faults/codes at all on it
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Old 08-08-2018   #7
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Re: Help needed guys and gals, I have a Twinair running issue

To me, spark plugs seem the most likely culprit. Working fine at light loads and low boost, but then when the boost is increased, the plugs fail to spark reliably.

-Alex
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Old 08-08-2018   #8
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by alexGS View Post
To me, spark plugs seem the most likely culprit. Working fine at light loads and low boost, but then when the boost is increased, the plugs fail to spark reliably.



-Alex


I did actually change them a month or so back when I serviced it, so I guess itís possible I bought a dodgy set Think I might buy a couple more just to rule it out
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Old 12-08-2018   #9
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Quote Originally Posted by UnderWaterDuckJuggler View Post
Sorry I shouldíve mentioned that, it was the first thing I tried but thereís no faults/codes at all on it
Did you use the correct software, not a generic code reader? Sensors/fueling
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Old 15-08-2018   #10
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by John202020 View Post
Did you use the correct software, not a generic code reader? Sensors/fueling


Na it was some super expensive (snap on I think it was) reader that a mate has at his garage.
I did try my Bluetooth one before that though and that also said there was nothing there
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Old 15-08-2018   #11
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Re: Help needed guys and gals, I have a Twinair running issue

Iím gonna see if I still have the spark plugs I took out, just to see if they could be the problem 🤞🏼
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Old 17-08-2018   #12
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by UnderWaterDuckJuggler View Post
Iím gonna see if I still have the spark plugs I took out, just to see if they could be the problem 🤞🏼
I've just serviced my wifes TA, and it now runs smoother than when we bought it over a year ago. I'm sure it was to do with the plug gap, as the old and new plugs were 0.75 from the box, and I read they should be 0.7. Not sure if that is correct, but it runs smoother and is less noisy now.
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Old 19-08-2018   #13
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by UnderWaterDuckJuggler View Post
Iím gonna see if I still have the spark plugs I took out, just to see if they could be the problem 🤞🏼
Hi UnderWaterDuckJuggler
I was wondering if you solved the problem with you other half's 500 Twin Air?
As mine does exactly the same thing.
Thanks Dave
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Old 21-08-2018   #14
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Re: Help needed guys and gals, I have a Twinair running issue

Quote Originally Posted by UnderWaterDuckJuggler View Post
I’m hoping someone is clued up enough or has had or has heard of an issue, and can suggest a potential fix ����
Basically my partners Twinair out of the blue last week decided that as soon as you put your foot down out of eco mode, and it comes on boost, it feels like it kinda splutters (sorry best way I can describe it) and won’t accelerate at all until you back off the throttle, yet in eco mode it doesn’t appear to do it

Any help greatly appreciated guys
Had exactly the same thing on mine a year ago (Jan 2014 model - 23k miles at the time) Was a failing coil pack. Luckily I had a spare one in my workshop and could just swap it over.. not been an issue since
Didn’t bother with the software for this, getting the laptop out was more hassle then just swapping a coil pack... there are only two anyhow.
Spark plugs should be the original type only, think they are NGK, had a very bad experience with a poor batch of Bosch plugs (two sets failed) on a 1.2 500 last year also... replaced with NGK original type and everything has been good
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Last edited by p6baseunit; 21-08-2018 at 18:37.
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Old 25-08-2018   #15
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Re: Help needed guys and gals, I have a Twinair running issue

Hi guys

I gave my TA a service, plugs, air filter, oil filter, and oil change and now all good. Now runs really well.
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