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Location:
Adelaide
Registered:
October 2003
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Location:
Sydney
Registered:
September 2004
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 07:18
 
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If your getting a check engine light your ECU should have stored an error code. Before changing wiring and stuff you should pull the codes using your diagnostic port in the engine bay (google search or forum search will reveal how) and record them.
Post the codes up here If you dont have a reference and someone here with a 165 tech manual can decipher the cause. 
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Location:
Adelaide
Registered:
October 2003
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 07:31
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Sorry man. i left that part out. I have checked the error codes and it came up with intercooler. I've edited the original message to stop further confusion. Cheers anyway.
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Location:
Adelaide
Registered:
October 2003
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 07:31
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Sorry man. i left that part out. I have checked the error codes and it came up with intercooler. I've edited the original message to stop further confusion. Cheers anyway.
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Location:
Sydney
Registered:
September 2004
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 07:35
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Im not sure what generates the code, could be either the ECU senses no current to the pump, or there is a float mechanism in the intercooler to sense low fluid level....sounds to me like the means of sensing the intercooler status is faulty if you have made visual inspections to confirm its working...either that or the wiring from sed sensors is faulty...
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 08:00
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Did you clear the codes first? And what is the code your getting?
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Location:
Fraser Coast, QLD
Registered:
June 2005
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Re: GT4 Intercooler probs
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Thu, 24 November 2005 11:29
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the same thing has been happening to me. The engine light comes on and its the pump/ fluid level indicator.
there is great flow in the intercooler tho. Happens when im in traffic tho.
I made the pump pump continously tho. I bridged sum wires to make that error code go away, but maybe that is the cause...
ty
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Location:
Sydney
Registered:
October 2002
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Re: GT4 Intercooler probs
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Sat, 26 November 2005 02:02
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This is a common problem on the water/air intercooler. I had this problem a couple of years ago on my ST185, and it turned out that the actual level sensor was buggered. Had it replaced ($150?) & all was good again.
Several months later I got the same error again & that time it was a dodgy connector plug (a few inches down the line from the level sensor). Replaced with new $2 generic connector plug & all has been okay since.
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Location:
Adelaide
Registered:
October 2003
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Re: GT4 Intercooler probs
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Fri, 02 December 2005 05:36
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Yeah i think the code was 54 if i remember correctly. It was definitely the intercooler code though and yes i have reset the codes a few times.
Does anyone know if the computer turns off power to the pump if it is getting signal that the level is low or that the pump isn't working?
Also does anyone know how the level checker works. Is it like a switch 'on' when the level is good or 'on' if the level is low?
Also is there any other sensor that tells the computer if the pump is functioning or not?
or to put it another way, How does the comp tell if the pump is working?
I don't expect you guys to know all these things but any input would help. I struggle to find any manual type information on this car.
Cheers for your help guys.
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Location:
Newcastle, NSW
Registered:
May 2004
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Re: GT4 Intercooler probs
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Fri, 02 December 2005 13:13
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http://www.gtfours.co.uk/
this guy has almost all the gtfour info u will ever need listed on the site..and if u need to know anything thats not on the site...drop him an email and ask him...hes the man...the unnoficial gtfour guru
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Location:
Adelaide
Registered:
October 2003
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Re: GT4 Intercooler probs
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Mon, 05 December 2005 07:33
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I reckon i have it sussed boys.
The intercooler level checker is a float switch which is in position 'on' when the level is good. My float switch works but the float itself has lost its bouyancy. Therefore when in the intercooler (or a glass of water) it doesn't float up to complete the circuit and the comp thinks the level is low and hence the warning light.
Cheers for ya input guys i'll post the final story FYI.
Thanks again
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Location:
Brisbane
Registered:
July 2005
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Re: GT4 Intercooler probs
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Wed, 07 December 2005 01:59
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Yeah your right, float is a "normally closed" type which open circuits when the level is low.
If you look after your car then; Eliminate the float - ie bridge the wires. The only risk is pump burnout if you run it for more than a few minutes while its dry. Most ppl who look after their wheels look under the bonnet more often than that and wouldn let it run dry.
I know an example on a slivia with an ATWIC setup where the guy simply had two exposed gold (anything corrosion resistant will do) contacts about 40mm from the bottom of the tank. They were about 5mm apart and when submerged the water conducted enough to keep the circuit complete.
I dont think it was wired into the ECU, rather just a safety mechanism on the pump.
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