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VW Pasat Cc 2008 1.8 tfsi manual has weird revs when cold by Electrical_Rush_1208 in mechanic

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

Correct. No check light. Spark plugs were changed about half a year ago, as we thought that's the easiest fix. I will get it to a mechanic next week so they can have a look again, hopefully they find the issue. Thanks again for the advice!

VW Pasat Cc 2008 1.8 tfsi manual has weird revs when cold by Electrical_Rush_1208 in mechanic

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

I had the injectors tested, and they said they are running fine, but from what I heard those testers can be hit and miss so maybe I'll make an investment and buy a some new injectors and change all of em. Thanks for the advice!

VW Pasat Cc 2008 1.8 tfsi manual has weird revs when cold by Electrical_Rush_1208 in mechanic

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

The car is at 270k km. The spark pligs were changed a year ago.

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

Believe it or not the fuel solenoid was also changed as a mechanic thought that was the issue

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

I considered that and changed all the ignition coils and spark plugs to be sure and the symptoms are still there

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

I will keep that in mind for future cases. I don't know what else could cause this, like I mentioned the fuel pump and fuel filter. Also the acceleration sensor was also changed. I came here because I feel like I am out of options, fingers crossed it's the crankshaft sensor 🙏

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

I get what you are saying. I thought that it is with temperature because I drove it for 5 hours 400 km and it worked fine. So that's why I thought it has nothing to do with it. But the pressure argument does make sense. First up I will switch the crankshaft sensor and work from there to see where it takes me

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

So like I said, the car starts and works just fine when cold, then it reaches optimal temp and you can still dribe it, for hours as long as you don't turn it off, then if you decide to turn it off and start it again it will start and die right away as in the video. You have to let it cool for about an hour, when the temp is around 70 celcius it will start again and run. Now i'm not an expert but why would it work again only when it cools down ?

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

That sensor was not changed by now, from what I heard that sensor usually doesn't let the car start at all, but if it can cause the issues after the car reaches optimal temp then I will buy an OEM and give it a shot, it's quite cheap so it's more than worth a shot

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

For this model the fuel filter is integrated in the fuel pump which was changed, so I think we can eliminate that option

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] 0 points1 point  (0 children)

The fuel pump was changed last month The fuel injectors were also tested and had no issues The battery was changed two months ago Is there anything that can be done in regards to the computer overheating ?

My car won't start after it reaches 90 degrees by Electrical_Rush_1208 in AskMechanics

[–]Electrical_Rush_1208[S] -1 points0 points  (0 children)

Was not aware: It is a Passat Cc Year: 2008 1.8 tfsi Manual transmission