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Location:
Melbourne
Registered:
December 2003
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st162 TVIS problems?
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Fri, 12 March 2004 12:36
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I think i might have some problems with my TVIS or the ECU anyway. My idle is steady, but all over the joint. Ive set the idle at 750rpm but after driving round and coming to a stop, it idles between 1k and 1500 - Its not my idle settings coz i unplug the fan, warm her up and set them from there. It feels as tho when i brake from hard revs, or at least revs over 2500 it tends to rev high. would this be the TVIS not disengaging? (secondary valves staying open) If so, would this be due to a malfunctioning ECU? any help would be appreciated coz its shitting me and making gear changes annoying, plus its wearing my clutch.
Cheers
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Location:
South Australia
Registered:
July 2002
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Re: st162 TVIS problems?
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Fri, 12 March 2004 15:34
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It's not your TVIS I can tell you that...I would start looking at vacuum hoses first, the idle vsv is on the back of the t-vis manifold it's very hard to get a good look at.
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Location:
Melbourne
Registered:
December 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:23
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Dont suppose you have a photo pointing out which it is?What do i do with this idle vsv?Is it like the normal idle screw?turn to adjust - does it adjust the point at which TVIS kicks in? Ive checked my vaccuum hoses and they all seem to be fine but il check them again.
Thanx
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Registered:
June 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:33
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Sticky throttle maybe, when it does it next time give the accelerator a poke and quickly remove your foot to let it spring back.
If it's not that then could be loose hoses holes in hoses etc etc... lots and lots of things, good to start simple though.
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Location:
South Australia
Registered:
July 2002
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Location:
Melbourne
Registered:
December 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:38
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yeah that was the first thing i tried. It never used to do it until i got a whole heap of seals replaced through the engine (crank etc) Could it be something to do with my exhaust?I think my cat is pretty effed and my muffler has one stuffed baffle. Il keep going through the list - Il try that RedEx thing as well - my head could be pretty gummed up.
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Location:
South Australia
Registered:
July 2002
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:43
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Do you know exactly what work was done on the car?
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Location:
Melbourne
Registered:
December 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:47
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timing belt was changed, camshaft seals (both), oil pump seal, crankshaft seal, distributor O ring, and a new engine mount.
Thats what was done - but its gotten worse since then (1/10/03)
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Registered:
June 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:54
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check your vacuum hoses  and radiator hoses. When I changed my engine my idle was 3000rpm+ until i noticed that there was coolant leaking out of a hose haha.
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Location:
South Australia
Registered:
July 2002
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:54
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Yeah doesn't sound like anything strictly related to those jobs could screw your car up like it is...you could check the cam timing (it's a bitch to do though) and maybe the crank angle sensor (I can't remember exactly if the 3S-GE has one or not and I could check it in my manual but I'm too tired to move atm).
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Location:
Melbourne
Registered:
December 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 02:57
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Ive done the coolant hoses - i basically burst them all within a few weeks of each other so ended up replacing the hole lot (except 2 which i couldnt be stuffed getting off, but they're fine) I have a leaking sump but i dont see how that can be affecting it. Oxy sensor? ive checked the TPS and thats fine so im kinda lost. Will just have to check over all of the vacc hoses i guess. Do u know if u can buy them as a whole set from toyota?
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Location:
Melbourne
Registered:
June 2003
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Re: st162 TVIS problems?
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Mon, 15 March 2004 07:05
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StuC
I have a similar problem on st162
my car will idle fine... and then out of now where (when stopped) the idle jumps from 1g to 400rpm... up and down... if i fang it hard for a lil it goes away.... but it always returns...
could it be ecu?
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Location:
Sydney
Registered:
October 2003
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Re: st162 TVIS problems?
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Sat, 08 May 2004 07:56
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On my old car the idle would sometimes just fall to 400rpm whilst cruising (0-10% throttle) I would just push the clutch, turn the car off, turn it back on and it would be fine. She just needs a reboot every now and then
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Location:
Sydney
Registered:
May 2004
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Re: st162 TVIS problems?
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Sun, 16 May 2004 05:23
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hmm.. well i know when i changed my coolant in my st162 i forgot to turn the heater on when i was warming it up again and the revs were going up and down. say between 1k and 3k.
also when you adjusted your idle did you clamp one of the hoses. i forget which one it is but you need to do that. you can't just turn the idle screw.
also maybe check the diagsis system and see if any codes are comming up. if one does come up and you fix it you need to pull out the efi fuse to reset the computer.
not sure if any of this will help but its something to consider.
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Location:
tas
Registered:
June 2002
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Re: st162 TVIS problems?
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Sun, 16 May 2004 11:18
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don't spose there is an online 3sge service manual like the 7mgte?
my friend has a 3sge celica with an eratic idle, i told him to check his hoses for leaks, but i would like to check for codes and basically see what else i can do.
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Location:
Sydney
Registered:
October 2003
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Re: st162 TVIS problems?
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Sun, 16 May 2004 11:39
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well i know when i changed my coolant in my st162 i forgot to turn the heater on when i was warming it up again and the revs were going up and down. say between 1k and 3k.
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whats the theory behind this? sounds kinda weird...
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Location:
Melbourne
Registered:
December 2003
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Re: st162 TVIS problems?
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Mon, 17 May 2004 00:29
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I did the head/redex clean the thing the other and since then it hasnt been as bad. Ive also raised the idle to about 850-900 rpm so that if it does drop it doesnt sound or feel like im gonna stall. I think ive put it down to leads and points, maybe even my dizzy. Im gonna pull that off and check foe cracks etc and if its stuffed, external coil here i come.
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Location:
Sydney
Registered:
May 2004
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Re: st162 TVIS problems?
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Mon, 17 May 2004 03:38
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Your car doesn't have points. Its all electronic. Maybe check the rotor button and dizzy cap for wear.
As for changing the coolant. Coolant flows behind the heater box and if you change your coolant you need to turn the heater on so that there's on air where coolant should be in your heater box. I'm not sure why but when i didn't turn on the heater when warming the car up again after changing hte coolant thats what happened. I'm not sure why tho.
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Location:
Coffs Harbour
Registered:
October 2004
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Re: st162 TVIS problems?
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Wed, 17 November 2004 11:17
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hey buddy get ya car electronically tuned i had exact same problem , it turned out someone had put new o2 sensor in car and not been tuned up, so i got it tuned and he said that the air fuel mixture was completely wrong and he fixed it up and now its great :>
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Location:
tas
Registered:
June 2002
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Re: st162 TVIS problems?
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Wed, 15 June 2005 10:47
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Thats bullcrap unless your talking about using a aftermarket programmable ECU.
New o2 sensor wouldn't cuase those problems, perhaps reset the ECU and let the ECU relearn engine conditions.
otherwise i think your mechanic is a lying bastard.
By the way my friends celica with the eratic idle is now fixed. Changed the headgasket, also if there is any air pockets on the cooling system it seems the 3sge likes to rev 3000rpm or there abouts until all the air has escaped.
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