Rev's keep dropping

[Tom]

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That will be the injection fault light, take it to a dealer.

Its indicating the ECU has found a fault so the garage will be able to read it. Do NOT disconnect the battery as it will loose the faults.

 

[mj]

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will take the car to a Fiat dealer on Friday and let you know. Hopefully it will be easy to repair (parts exchange required maybe) as I have another 1,000 km drive planned for the weekend. Talk to you soon. btw, time to update some pictures of my car.

 

[mj]

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well, reading articles on eratic idle for the last 48 hours, I finally decided to fix and clean the idle valve myself. What I really need is to help me with what to do/avoid. All comments and helpful information is highly appreciated. Thanks folks.

 

[Tom]

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thats the valve, on the Mk1 there are 2 screws that you undo to remove it.

Take it off, spray it with WD40 and wipe it clean, wipe the hole clean and put it back.

 

[mj]

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can't find the screws on mine but will take a photo of mine MK2 stuff and will post it here for comparison. Thanks for extensive help you offer.

 

[mj]

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Tom, I did have a look at the idle valve positiong and couldn't allocate two screws you mentioned. Can you please check the photos bellow and let me know what to do. Thank you.

 

[Tom]

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That looks very much like it won't come out. Sorry!

 

[mj]

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Tom, I finally managed to get this on a computer diagnosis at my local Fiat dealer. They claim it shows 3 errors in it and they had it deleted. It worked just fine for about half a day and then did the same thing - REV's keep dropping! I called them again and they say idle valve can not get clean so whole piece needs to be replaced.

Is that correct, is this what you predicted? What is the price on this and can you indicate in the pictures what exactly need to be changed?

 

[Tom]

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Nice of them not to tell you what the 3 errors where. Bloody Fiat.

Sounds like you need a whole new throttle body. Its the silver coloured bit that sits between the manifold (big black thing ontop of the engine) and the inlet pipe that goes to the air filter.

Don;t know the price but I'd expect it to be alot.

 

[mick c]

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MKII Punto. I had a suspect idle control valve which looked like the one in your photo's. Fiat changed the whole throttle body (under warranty)as for some reason the valve is built in (sensible move!). I'm not sure what the cost would have been but someone said about £200.00 (for the part without labour - don't know about bravo but it's easy enough to fit yourself on a mkii punto).

It didn't help anyway - I ended up with a new ECU.