What is this sensor???

[DavesMr2turbo]

Hi all

I am changing over my blown CT26 to a CT20b turbo.

On Connecting the water return pipes i noticed that the white sensor below is loose. the nuts is well tight in there but the white plug bit can pull in and out and its pretty loose.



http://img191.imageshack.us/i/sdc126291.jpg/]




Could i just push the sensor back in or will it leak coolant? Also what sensor is it??





This is bit of my blown turbo not only the manifold blowing so was the turbo to the manifold and blowing at the downpipe lol. show u the tubby pic lol



http://img25.imageshack.us/i/sdc12601.jpg/]

[tarmac terrorist]

looks like the cold start injector timer switch sensor they are common for breaking away like that, i dont use one now as ive converted to rev 3 ecu & wiring

[Razor04]

Thought it was the oil pressure switch? or is that higher up?

[tarmac terrorist]

Thought it was the oil pressure switch? or is that higher up?

oil pressure is the large one at the top

[DavesMr2turbo]

so what is it and well it leak lol

let me know.

[DeusMR2]

Nothing will leak but it will be harder to start from cold. Mine has broken and I need to to turn the engine over twice to get it to start in the morning.

Easy (and cheap) way to connect one of the wires to a switch that toggles between 40k and 80k Ohms. Switch it to 40k when cold and 80k when warm. The other wire goes to ground (I think - I haven't tried this out yet!)

Bit of a hassle I know but I couldn't find a second hand switch anywhere!

[DavesMr2turbo]

anyone else???

[DavesMr2turbo]

need to order that sensor from toyota tomorrow. can anyone tell me what it is asap. the one above the red square is that the ECU Temp sensor??


need some help guys

cheers

[toxo]

The sensor in the red box is the cold start switch and if the top is loose then it's fecked and you need a new one. It will be rotten inside, like this:



You can't 'push it back in' because it's not a push in sensor, it's a screw in one. If the plastic bit's loose the internals aren't attached properly anymore.

The sensor to the right of the red box is the ECU temp sender, it has a yellow plastic connector.

The sensor above the red box (large round one, single spade connector on it) is the oil pressure switch.

Edited cause I got it wrong

[DavesMr2turbo]

good mine. that the sensor i can pull in and out lol:)

proper loose. will that affect car driving once car is warm???


i got ecu temp sensor on order from toyota. to replace it will i loose coolant.?


cheers
dave

[toxo]

Actually I might have that wrong - mine's a rev3... 2 secs and I'll double check.

[DavesMr2turbo]

cheers buddy. it meant to be solid and i can pull it in and out. what ever sensor it is its fecked. hope it is the ecu coolant temp sensor as i ordered one from toyota

let me know asap dude:)
cheers
dave

[toxo]

Yeah I did have it the wrong way round, whoops!! Sorry about that. Edited now to correct.

You will lose a tiny bit of coolant when you swap the ECU temp sender but not very much and the next time you run the car to warm it will bleed out to the cap so you can just top it up once its cold

[DavesMr2turbo]

in the box is a COLD START switch then. that is fecked then. what problems should that give me.

gonna change the ecu coolant temp anyway.

let me know the problems i should get with the cold start switch broken??

cheers

[tarmac terrorist]

in the box is a COLD START switch then. that is fecked then. what problems should that give me.

gonna change the ecu coolant temp anyway.

let me know the problems i should get with the cold start switch broken??

cheers

the ecu will not be able to work out engine temp so wont know what fueling to add for cold start ,possible rough idle from cold for couple of minutes & maybe a little difficult to start ie take a few cranks

[DavesMr2turbo]

what about when full warm???

anyone else think of anythink

cheers

dave

[tarmac terrorist]

what about when full warm???

anyone else think of anythink

cheers

dave

shouldnt be any probs when warm as it is only for cold start

[DavesMr2turbo]

well weekend i am replacing ecu coolant temp sensor and cold start switch and therostat with full coolant change and bleed system.


next on my list is set ht leads with dizzy cap and rotor arm and fuel filter/

ecu reset to

sound right move

cheers

[DavesMr2turbo]

looks like the cold start injector timer switch sensor they are common for breaking away like that, i dont use one now as ive converted to rev 3 ecu & wiring

I went to toyota and they think its a cold start injector timer switch. bloody £100. Also ordered a ECU COOLANT temp sensor at £50
You sure they got the correct price lol:)

The Cold start injector timer switch is what toyota called it. is that same as u guys sed for Cold start switch sensor

cheers

[DavesMr2turbo]

sound about right guys