colds start injector time switch

[Horseflydf]

Hi 4th gens,

89 celica gts Had alot of trouble starting up especially when it was cold last winter so eventually I found out about this cold start injector time switch any body out there had this problem
the damn switch cost 150 dollars unreal.. wonder if there is
a way to get around this problem the switch grounds the cold start injector. any suggestions would be great.

[Pineapple]

Go get one in junkyard. Acturally get a bunch incase it doesn't work. Don't ground the injector, you'll run really rich all day long. Probably spent more on gas then a new switch.

[Horseflydf]

the time switch and cold start injector had power going in
when I put the ignition switch to on but when the engine cranked
no power to either , ill try the junkyard
thanks

[Pineapple]

The cold injector only suppose to spray when its starting. As soon as coolant warm up, it'll stop. I believe you can get one from any 3S, 5S engine, GE and FE. I got a few last time I went there.
If you put a ohm meter across the switch, it'll show resistance. If you put it in hot water, it'll show different resistant. If it doesn't change, 0 ohm or open circuit then its broken.
Hard start may be battery or other ignition problem.

[Horseflydf]

Right now the car starts up fine last winter gave me alot of trouble so I assumed it had something to do with the cold start injector. I checked the resistance to the cold start and it was ok.

There isnt any helpful info about the time switch in the books I have chilton and Haynes ,sucks so Im looking for a factory service manual also.

thanks for your input.. Ill post a reply if I can correct the problem right now its summer time so I have a few months. hope u have a good summer.

[Pineapple]

That was instruction on checking the time switch
I got service manual for mine

[Horseflydf]

hey I ran ohm on the time switch like you suggested
After the car was shut off for a few hours and it read 4.3
then I tried it in the morning after sitting all night and read 1.8
what does your bood say

[Pineapple]

20-40 ohm when cold.
40-60 ohm when hot, right after you shut off the car.

From the reading you got, its the coolant temp sensor you checked Don't remember the excet plug, its green or brown.

[Horseflydf]

nah i checked the right one
green one is the water temp sensor its to the right
then comes the time switch then comes the water temp sender
its for the gauge on the dash

set the ohm on 200 and checked it with the engine off both times
cold and hot then I checked it with the engine running and got no reading on the ohm .

hey I got toyota celica 88 factory service manual on ebay now
ill try to sell chilton haynes