Hot start fix help VW T4

[t77]

Hello I need repair Hot start problem in VW T4 2.5L D ECU Bosch 0 281 010 082 ( 074 906 018C) Flash 29F400
BIG THX

[bobolin4o]

There is not "hot start problem" in the file.
How the engine start if you disconnect the Temp. sensor when the engine is hot?

[t77]

Yes U right engine start after disconnect Temp sensor (engine hot)

[wronapl]

With the temp. sensor connected car does not start or starts worse , when dissconect sensor starts well ?

[igendek]

wrong injection timing

[t77]

To wronapl ..Yes exactly
To igendek ..ok how can I adjust injection timing ?

[violator11]

First, check injection timing using VCDS.

[wronapl]

Mot type is ACV 100PS. You have 2 timing belts. Check both and set timing pump at 0.3-0,4mm BTDC

[synkrotronic]

Did you confirmed starter and battery??
Most of problems " hot start" i have seen are low rpm on start.

[t77]

No I none checked starter and battery ..but why after disconnect Temp sensor , during crank engine (hot) starts in the moment

[bobolin4o]

No I none checked starter and battery ..but why after disconnect Temp sensor , during crank engine (hot) starts in the moment

OMG...!
You want to tell us, that 35 mg IQ is not enough to start the engine ???

start IQ.jpg

[bobolin4o]

Make some diag - IQ, SOI at idle, warm engine...
Post here the readings.

[filutek]

.Too slowly turns the starter , check the current consumption and state battery.Hot engine dosage starts from the specific rotation rpm.Cold dosage starts from 0 rpm .

[bobolin4o]

.Too slowly turns the starter , check the current consumption and state battery.Hot engine dosage starts from the specific rotation rpm.Cold dosage starts from 0 rpm .

Nonsense... look at the picture - it is from this software...

[t77]

Bobolin4o look my post #3 (after disconnect Temp sensor engine hot starts in 1 second no more crank long)