Mondial T cold start problem

...Still have this issue even after I got my car back and sensors were replaced (and a BIG bill was paid): when starting up cold, the engine runs on a RPM around 700. Most of the time, 15 seconds later it rises to 1000 rpm and runs normally.

Most of the sensors and air flow valves have been replaced some weeks ago. I'm not willing to go over to that f*cking mechanic again for the 3d time!

Today I had the case that it was running on too low rpm and stalled 45" later.

Here's a video (shot in a dark garage).

https://youtu.be/w6BO4uwFjac

I did some research here and most of the time it's about sensors (replaced in my case).

 

There's no warning light going on so at first sight, everything appears 'normal'. I think I found the way to do that on this forum through My Ferrari 348. I'll order some sensors and replace them to start with

http://www.ferrarichat.com/forum/348-355-sponsored-bradan/229830-replacing-coolant-temp-sensors.html

 

My first thought is the sensor because usually some seconds later, it runs smoothly. And it's a relatively simple thing to start with.

 

Thanks, I'll start with cleaning the connectors first before ordering new ones.

 

So, the cleansing with WD40 is done. I'm waiting for the engine to cool off so I can cold start the engine. Here are some pics of the procedure to get under the air intake plenum (by removing the multi-cables first) .

What really p*sses me off is that the people at the 'performance car' garage did not replace these cheap sensors after the car went back to their shop 3 times for the same problem (also for other issues which did not disappear) which costed me 8K in total... I get the impression that they just kept it for 6 months in their shop without really looking into the problem.

Anyhow, we'll see if the WD40 does the trick.
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Unfortunately cleaning the sensor sockets didn't do the trick. As they haven't been replaced recently, I'm going to do that myself.

 

It's best to just replace them while I'm doing that job, they only cost a couple euros. After that, I'll pay the 'sports car expert' a visit give him a well aimed kick in the sensors!

 

Hey, the connectors all look OK and well attached.

 

I just went to the 'Officina Valenti' Ferrari expert in Belgium who takes Ferrari engines apart whole day long. The cold start problem is a sign of the engine not running in balance and there is some black sealant kit that is not supposed to be between the air intake plenum and the intake blocks on either side (between these blocks in light blue and the intake plenum on the pic). They're going to balance the entire engine, nothing more nothing less they tell me... Meaning: the 6000 euro the previous mechanic charged me (let's just call him "Serge Power"), didn't help and nothing got solved!
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problems got resolved by a specialist who fine tuned all engine settings

 

...or you can send your car over here and he'll fix it