???Cold start timer switch question???

[lill daddy]

Hey ya guys,

So for awhile now my conversion has had a cold start issue where it runs "rough" for about 3 seconds on start up, after the initial start in the morning it then runs and starts fine... I replaced the coolant temp sender (Green plug) with no change...

So my question is can i unplug the cold start timer switch and just loop the wires and try do a cold start to rule it out??? My concern it that the switch doesn't just complete the circuit but provides a resistance reading for the ecu?

any hoo any help appreciated... as always

Cheers
Adam

 

[lill daddy]

So have worked out its a resistance value the ecu sees to trigger the cold start injector... 7k ohms.... and it is my switch thats poked... I really dont like the look of the price for a oem one

 

[Zuffen]

Just pick up a used one.

They are pretty reliable and there should be heaps of them in NZ.

 

[lill daddy]

Just pick up a used one.

They are pretty reliable and there should be heaps of them in NZ.

Yip! I'm on the hunt for one now.... On another note is there a way to "test" the cold start injector? Can I give it a direct feed to see if I can hear it clicking??? Bare in mind my UZ is in a hiace van so there is f'all room...

Cheers

 

[Zuffen]

Use a meter and measure the resistance as the engine heats.

This will tell you if the sensor is faulty or you have a wiring issue.

 

[lill daddy]

No no the sensor is toast... like in two pieces toast But its been doing the rough cold start for quite some time so would like to "test" the injector to make sure its not gummed up