whats 20 degrees c mean when checking timer control valve

[Cody]

understand the 10-14 ohms now but dont know what this 20'oc means
i am just about to check it as it sounds like a transit van

[TonyN]

understand the 10-14 ohms now but dont know what this 20'oc means
i am just about to check it as it sounds like a transit van

Sometimes a unit is temp sensitive, it gives a different reading at different temps, so you need to know the right temp to get correct ohms reading to check its working OK. Its how the ECU knows what temp the engine is running at.

[Cody]

have checked and it reads 13.5 but the engine is stone cold
how do you see if its at 20 degrees,do you stick a thermometer some where
i feel like it

[Cody]

warmed the engine up very slightly and taken another reading.it was all over the place.does it have to be exactly 20'c
left it uncoupled and started it up,it knocked like hell so it must be doing something.can it operate at 90% or if they break dont they work at all
thanks fo all replies cody

[TonyN]

If its playing up it'll give false readings, making the motor run bad or light the engine check light.

Or break completely and not do anything.

[Cody]

dont really no what to do about it BUT I put some injector cleaner in yesterday and it seems to be running quieter.So I am going to wait untill the tank of fuel with the cleaner in, is used upand if this does help it points to them needing reconditioning.I'll post the results Thanks