BrownsfaninMN

...I know, I know, you people are tired of seeing people with "cold starting" issues, this is in response to everyone suggesting it's the Cold Start Injector Timer, my manual says that I have to drain the cooling system to change, is this necessary, how much coolant will come out? And how much does a new timer cost??? And (one more question) do you guys think that aftermarket parts (i.e. Bosch, etc.) are as good as the overpriced Toyota parts from their parts department??? Thanks to all, great website.

TORTIS

iTrader: (1)

here is my view on after market parts. if it is really easy to replace i will use after market, but stuff like timers and sensors i go to the stealership

Targetnut

when you change it have the new one ready to go in as soon as you pull the old one. You'll lose about a cup of coolant. Less if you are quick.

I'd get a factory replacement.

thook

What targetnut said on procedure. Just have the replacement ready and within reach when you pull the old one. And when you do pull the old one, put your thumb over the hole while getting your hand on the new one.

AFA aftermarket, I'm running a Borg Warner in my 22RE right now due to lack of funding for stealer prices and a time factor...couldn't wait on shipping for a good deal on OEM via internet. It's working fine. Can't say it's as good or any better. Time will tell. My original factory one lasted for 217k miles, though.

n4ynu1010

Is it actually a timer or are we talking a Temp Switch here whether Vacumn or Electrical you do mean a switch right ? Just curious , never had the 4 banger

Targetnut

it's a thermo-time switch

it has a bimetal switch thatopens a set of contacts once a certain temperature is reached. this set of contacts provides a ground circuit for the cold start injectors. there is also a heater element that heats the bimetal switch when cranking.

thook

Yeah....what he said. (Mighty fine description there, bubba)

4Hummer

Your Cold start injector is controlled by the cold start injector time switch and is ground switched.

Last I priced the CSI Time Switch it was over $200 Canadian (Which is like $225 US hahahahaha)

The Cold Start Injector only fires when Cranking, figure out which of the two wires is the Ground on the CSI, Splice into that wire run it to a toggle switch in the cab that runs to ground. When its cold outside flick the switch and your Cold Start injector will fire when cranking.

n4ynu1010

Ahhhh Bi-metal Time Delay with heater , Hmmmmmm , I have some fan switches like that in the shop for Air Handlers , maybe could retro fit heheh .
Thanks for the explanation by the way , nice to know even if I don't have one