Toyspeed.org.nz Message Board

by **fuzzilogyc** » Sun Jun 17, 2007 10:42 pm

Hey guys,

My smallport 4AGE seems to take ages to warm up (middle of the temperature gauge). We're talking like ~10mins from dead cold to middle to the temp gauge. Is this normal? Faulty temperature sensor? ideas/opinions?
Cheers

by **Mr Revhead** » Sun Jun 17, 2007 10:49 pm

thermostat probably

by **fuzzilogyc** » Sun Jun 17, 2007 10:55 pm

best to buy new or OK to get 2nd hand? How much new? cheers

Website · by **Bling** » Sun Jun 17, 2007 10:57 pm

buy new, they don't cost much, just pop into super cheap and grab one.

by **Mr Revhead** » Sun Jun 17, 2007 10:59 pm

thermostats are cheap. and important. using a 2nd handone would be a bit dumb

by **fuzzilogyc** » Sun Jun 17, 2007 11:15 pm

cool cool. cheers...

another question:
the car is hard to start when dead cold. takes like 7 or 8 turns.
however, after running for a while, more than 15mins or something, it starts fine (like 2 or 3 turns). the battery is pretty new so shouldn't be that. plugs also less than 10,000k.

by **tex** » Sun Jun 17, 2007 11:41 pm

My smallport 4AGE seems to take ages to warm up (middle of the temperature gauge). We're talking like ~10mins from dead cold to middle to the temp gauge. Is this normal? Faulty temperature sensor? ideas/opinions?

the car is hard to start when dead cold. takes like 7 or 8 turns.
however, after running for a while, more than 15mins or something, it starts fine (like 2 or 3 turns). the battery is pretty new so shouldn't be that. plugs also less than 10,000k.

Sounds both related. Check the temp sensor for the guage and the ecu. cold start injector is turned on from the temp sensor.

by **fuzzilogyc** » Sun Jun 17, 2007 11:43 pm

how would i go about checking if these are faulty. also, if i'm correct, these water temperature sensors are found at the back of the head?

by **Calvin** » Sun Jun 17, 2007 11:54 pm

fuzzilogyc wrote:how would i go about checking if these are faulty. also, if i'm correct, these water temperature sensors are found at the back of the head?

and also found in the thermostat housing..

by **gepsk8** » Mon Jun 18, 2007 12:15 am

lol, there are four sensors in 4age smallport coolants system i can think of, gauge, by dip stick/cam cover, back of the head cold start sensor and efi sensor, thermostat housing, is the fan sensor, unplug it fan will come on with key on.

next time u start it from cold, put the throttle at 3/4 should kick in after 3-5 cranks, sounds like cold start circuit isn't working. mine does this as i unplug the coldstart so i could get oil moving around a bit as i don't drive it that much.

if it still playing up i would get to autosparky or very clue on mechanic to look at it from cold start.

could have number of problems.

by **fuzzilogyc** » Mon Jun 18, 2007 12:27 am

to add to this whole temperature thing:
if the car is at normal operating temperature, then i drive it without stopping in traffic for 5mins or so, the temp gauge will drop down to cold (and idle will kick up correspondingly)....
sounds like symptons of the same problem(s)?

by **gepsk8** » Mon Jun 18, 2007 12:31 am

oh yea i think u have two problem, also change ur thermostat, there cheap $25ish from toyota parts.

by **fuzzilogyc** » Mon Jun 18, 2007 1:03 am

gepsk8 wrote:oh yea i think u have two problem, also change ur thermostat, there cheap $25ish from toyota parts.

so those 2 problems are? or are you just saying that you think they're unrelated problems?

by **gepsk8** » Mon Jun 18, 2007 9:07 am

thermostat not working correctly if at all, and hard starting from cold can be number on problems, from battery, cold start, efi temp sensor playing up, etc

by **Mr Revhead** » Mon Jun 18, 2007 9:32 am

cold start has a seperate sensor from gauge on these
sensor each for:
gauge
ecu
cold start

by **gepsk8** » Mon Jun 18, 2007 8:17 pm

nah i meant rev head missed out the fan sensor

and fan

edited

by **fuzzilogyc** » Mon Jun 18, 2007 8:33 pm

fan works fine, kicks in when the engine temp gets to normal operating temps.... well at least, seems fine to me

been reading around a bit about the problem possibly being the cold start injector... opinions?

by **AE82 FXGT** » Mon Jun 18, 2007 9:11 pm

Get a genuine thermostat aswell,

I went though two aftermarket (tridon) thermostats and the first was making my car run cold after a month, the second was making my car run cold right away. The places I bought them from didn't want to know about my problem.

It's not like I'm gonna test every thermostat I get before I chuck it in, I just expect them to work (is that asking too much?)

Bought a genuine one and it all works mint now.

by **fuzzilogyc** » Mon Jun 18, 2007 9:13 pm

oh, too late, already got a tridon one.... hope this won't give me any problems.

Website · by **Bling** » Mon Jun 18, 2007 10:06 pm

tridon will be fine, let us know if it solves ya problem

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