Barlow8869

iTrader: (1)

i dont think my cold start injector is working ... what tells the computer to use it ... how many volts does it take to open it ... if i cant get it to open with the computer, i will wire it so i can open it when i need it, but i dont want to over power it and burn it up

John in RI

iTrader: (167)

Cold Start is not ECM controlled. Should be able to figure out why it's not working with a voltmeter in about 5 minutes.

A bad ground from CSS to intake,.... a bad CSS,.... or lack of power will cause no Cold Start operation.

Check the purple/white wire @ the Cold Start injector when a 'helper' starts the car. If there's no battery voltage: Check the CRANK fuse. The voltage gets sent from there during start-up to the Cold Start Switch on the front (coolant port) of the intake manifold & the Cold Start Injector using the same circuit. ( The CRANK fuse GETS it's power - only while the key is turned to START - from the PURPLE wire @ NSS for Automatic,.... or the Clutch Start Safety Switch in a stick. )

The Cold Start Switch should only provide ground to activate Cold Start Injector ( ground = Tan wire ) if the engine temps are cold.

Barlow8869

iTrader: (1)

ok, thank you ... i will see if i can find the css (my first tpi car) and check the things you pointed out

Tuned Performance

iTrader: (92)

https://www.thirdgen.org/forums/tpi/669731-tune-port-cold-start.html

Barlow8869

iTrader: (1)

thank you tuned, that will help a bunch ... now just need a day off to get on it ... working 2nd shift 6 days a week dont leave much time to work on the gta

Tuned Performance

iTrader: (92)

Or I can tune it out

Barlow8869

iTrader: (1)

i wish i could have you do a tune, i just dont have the cash for it right now