trix2702 23 Posted March 17, 2011 Report Share Posted March 17, 2011 Hi folks, having problems with my vr turbo, basically crank the car, fires for a split second then floods big style, as in plugs are dripping wet. Car sometimes starts if fuel fuse is pulled and replaced once it fires but that aint a fix.Have so far replaced coolant temp switch for genuine vag one, tried another maf and crank sensor even though I don't think these are the issue.Comes up clean on a diagnostic check with no faults.Any ideas as I am slowly loosing patience with it now...Cheers Dougie Link to post Share on other sites
trix2702 23 Posted March 17, 2011 Author Report Share Posted March 17, 2011 Forgot to say that once started the car can be turned off and restarts no problem its only when its left a while it floods Link to post Share on other sites
richievr 1 Posted March 17, 2011 Report Share Posted March 17, 2011 have you checked the fuel pressure regulator?? maybe it is building up too much pressure? Link to post Share on other sites
trix2702 23 Posted March 17, 2011 Author Report Share Posted March 17, 2011 Yes mate, replaced with another off a running car, to illiminated it.Dougie Link to post Share on other sites
ROBSVENTO 0 Posted March 17, 2011 Report Share Posted March 17, 2011 Hmmm, you've replaced all what i would have said.. my guess i coolant temp switch but you say you changed that ?Hmmm got me stumpted... Link to post Share on other sites
richievr 1 Posted March 17, 2011 Report Share Posted March 17, 2011 hmmm...is there a way of checking the injectors???? on my mk1, one of them was not closing properly, so it was dripping fuel gradually into the combustion chamber.. was a pig to start (flooded) but after it warmed up was perfect?i'd also be tempted to double check the 4 pin sensor you replaced is working properly, as i believe this controls the cold start aswell as the general fuelling Link to post Share on other sites
ROBSVENTO 0 Posted March 17, 2011 Report Share Posted March 17, 2011 Yer that sensor does the lot and are prone to fail, does engine ecu as well as the guage... If you got a running car u can temp donor then why not swap the inlet manifold, only a hour job max, would also change injectors and throttle body at same time, rule out many things in one hit...Have u checked cam sensor ? theres also 2 knock sensors front and back...Could be any thing really...... Link to post Share on other sites
trix2702 23 Posted March 17, 2011 Author Report Share Posted March 17, 2011 Dont have any spare inlets as its a one off, and injectors are also different being turbo'd. It was the blue sensor we changed as I was led to believe that was for the ecu, But if its the brown one I will swap out one from my daily and change that tomorrow.P,.S, engine in question Link to post Share on other sites
richievr 1 Posted March 17, 2011 Report Share Posted March 17, 2011 i think the temp senosr is a 4 pin one, from memory black with a yellow band... maybe black with blue? Link to post Share on other sites
trix2702 23 Posted March 18, 2011 Author Report Share Posted March 18, 2011 Searched last night and it is apparent that the yellow temp sensor is for the fans control unit and aux water pump, the brown temp sensor is for aircon, so it must be the blue.When I started it this morning, opened the throttle slightly before turning over and it fired and ran and has been doing so for 30 mins now without issue. If I turn it off it starts straight away. Link to post Share on other sites
richievr 1 Posted March 18, 2011 Report Share Posted March 18, 2011 so does your throttle body need resetting with vag-com then??? Link to post Share on other sites
UnitedMotorsport 55 Posted March 18, 2011 Report Share Posted March 18, 2011 i'd also be tempted to double check the 4 pin sensor you replaced is working properly' date=' as i believe this controls the cold start aswell as the general fuelling [/quote']Yer that sensor does the lot and are prone to fail' date=' does engine ecu as well as the guage...[/quote']This sensor has no input to the ECU and has no control over any fueling.The coolant temperature input into the ECU is covered by the 2 pin blue sensor. Link to post Share on other sites
trix2702 23 Posted March 18, 2011 Author Report Share Posted March 18, 2011 i'd also be tempted to double check the 4 pin sensor you replaced is working properly' date=' as i believe this controls the cold start aswell as the general fuelling [/quote']Yer that sensor does the lot and are prone to fail' date=' does engine ecu as well as the guage...[/quote']This sensor has no input to the ECU and has no control over any fueling.The coolant temperature input into the ECU is covered by the 2 pin blue sensor.Thats what I thought, have you come accross this problem before? Link to post Share on other sites
richievr 1 Posted March 19, 2011 Report Share Posted March 19, 2011 make any inroads on this yet dude??? Link to post Share on other sites
trix2702 23 Posted March 19, 2011 Author Report Share Posted March 19, 2011 Yes and no, since it started yesterday without flooding it has been fine, left it from 11am till 7 this morning and fired off the key, no problem, Which makes it near impossible to determine what was causing it... Link to post Share on other sites
richievr 1 Posted March 19, 2011 Report Share Posted March 19, 2011 odd..maybe it was just sulking for missing ultimate dubs??? Link to post Share on other sites
trix2702 23 Posted March 19, 2011 Author Report Share Posted March 19, 2011 lol possibly mate, must be looking forward to Dubshed next weekend then, thats if the trimmers hurry up with my dash lol, cheers for input folks, will no doubt add to this should it happen again Link to post Share on other sites
ROBSVENTO 0 Posted March 20, 2011 Report Share Posted March 20, 2011 I stand corrected lol..... Link to post Share on other sites
Recommended Posts