Hey all

 

My fabia 1,2 is having a difficult time starting after hours of standstill, e.g after work or in the morning. It can start after a few tries.

 

Been searching the forums and found out it might be fuel return lines or fuel pump.

But fuel lines seems ok in the engine room (need to check again), replaced the "return valve" i think its called and i've replaced the fuel pump, no result.

The starter turns fine, I can heard the fuel pump starting.

 

Any ideas ?

Have you checked the condition of the battery?! Get a drop test done (very quick and easy) or a multimeter on it during cranking to see if the battery is still up to it. 

21 minutes ago, jars said:

Have you checked the condition of the battery?! Get a drop test done (very quick and easy) or a multimeter on it during cranking to see if the battery is still up to it. 

 

Thanks, good idea

Funny enough we needed the generator replaced this week, might be connected.

But I switched the battery around, we got 2x fabia mk1, let's see how it starts tomorrow

If the engine turns over satisfactorily it could be the coolant temp sensor.

4 hours ago, TMB said:

If the engine turns over satisfactorily it could be the coolant temp sensor.

 

It does turn fine

Wouldn't it be showing when reading out pending codes ? or at least not work in the dash ?

 

Got a ohm/temp chart, so going to try and put my multimeter on it tomorrow

15 minutes ago, IdlenutsDK said:

Wouldn't it be showing when reading out pending codes ? or at least not work in the dash ?

 

 

 

They don't usually show a code. They can drift out of spec, and they often fail without affecting temp gauge reading. Car temp gauges these days are stabilised over a wide margin.

Edited 1 February, 20206 yr by TMB

Switched the coolant temp sensor, both says 4,x kohm

 

After switching battery, the car wont even try to start (flat battery), but the battery comes from the working car.

Battery trouble gone...back to square one.

And there are no fault codes?

No, cant get any fault codes. Even when I read out after 3 failed start attempts

Okay, this morning i tried something, so if I turn ignition on 3-5 times without cranking it (for building up pressure on fuel lines) it started on first crank with no problem.

Update:

 

Replaced the fuel filter, didn't help (guess its not bad to replace anyway after 240.000km anyway)

Switched the coolant temp sensor and the fuel vacuum valve (top of engine room with fuel lines and a connector) with another fabia. Didn't help

 

Could start if I took out the connector for the coolant temp sensor tho.

 

Got a tip from a skoda mechanic, replaced the bottom piece of the key ignition. Been working fine the last 5 days. Picture attached