Hot start issues

[qsilverza]

Hmm I might try cleaning the throttle body on mine. ANd I dont think it comes down to the fuel you use as I use PULP 98 BP all the time.

[popeclement]

I have had the throttle body regularly cleaned to keep fuel residue deposits from building up which will occur with any octane fuel - keeping it regularly serviced, I am sure helps and does it no harm.

[Jmac]

Nothing to do with the valve train. This is temp related so nothing wrong with coolant sender ( if it has been checked) then you may have an overheating ecu power relay. The call made on the MAF is also a consideration. Unmetered air (air leak) can also cause dramas. A dodgy coolant temp sensor even if no fault showing (as it may still be within the parameters so as not to bring a light on , but at the highest point ) will lengthen the injector pulse thus flooding, simple and cheap would be the 1st thing i would try !!

[qsilverza]

I reckon I will give the temp sensor a go !

[D3bb4]

I'm having a similar issue with mine. Stopped at a servo to fill up, jumped back in the car and it wouldn't start. Took a few efforts to finally get it to start, pressing the throttle in also after it wouldn't start 1st go.
Is happening more frequently lately. It also idles high once it does kick over. Gotta be an elec. issue of some sort i'm suspecting.

[Jmac]

I had a passat today V6 BBG 2.8 engine hot start issue funny enough but it did have a code - guess what Temp sensor.
Just a little thing you must check and spray around to look for any vac or air leaks as you may have some unmetered air upsetting the settings. Cold start not an issue as the system is in open loop with an enrichened engine but when in closed loop its very important and all it takes is a small leak and you will have worries as with the temp sensor the injectors are pulsed longer injecting more fuel and tends to flood.
Golf 4 did have an issue from memory with the ecu relay which is housed in the engine bay under a black cover near the bulkhead next to air box
CHeers

[D3bb4]

Just to bring this thread up again....

Is it a water temp sensor? or a water temp switch? I'm trying to figure out what exactly the broken part may be called so i can order a new one!!! Else might give up and take the car to seb is he isn't too busy.

Thanks.