Wednesday, January 25, 2006 - 09:13 am, by: Mark Northcott(My91gt)
Hey guys well went to go home from work last night, started my car then next second it's not changed and was idling mad low. Anyways drove back to a mates (like 2mins away) car wasn't even near warm and the right cat was glowing red.
Anyways we ended up pulling the top cover off the engine were the spark plugs are and some clown has put good ol' NGK's in there. and the clearence gap is around about 3mm-4mm. And there were some that had evidence of extreme heat. It was the whole right hand bank that so far is stuffed, haven't done the left one yet. I got new leads and plugs coming, but still timid as to what caused this and also if it's going to happen again.
Has anyone else had this problem? or something similar.
Also the cat light was lite up until the car cooled down and we tried to start it again.
Any help with this as well as would I need a new cat cuz of all the excess fuel that has blocked it??
Wednesday, January 25, 2006 - 01:59 pm, by: Mark Northcott(My91gt)
Yeah that's been done. Also new candles and still doing it Been on the phone to Neil he seems to think that it's the engine ECU.
Basically it's idling at 600rpm (with or without aircon) Disconnecting the air-flow meter made no difference. It is really fuely and is also really laggy in acceleration.
Wednesday, January 25, 2006 - 02:39 pm, by: Mark Northcott(My91gt)
Ok trying to narrow this down.
There's spark coming out of the coil pack on the drivers side, but when it gets to the distrubuter cap it's either hasn't got enough spark to go in or there's not enough spark to come out...
Wednesday, January 25, 2006 - 02:45 pm, by: Ryan Rankovic(Ryan1j)
my TT was sounding like a monster rex the other week when I got water on the coilpacks while degreasing the engine bay... went away once it all dried out.
i dont think that helps your situation though sorry!
Wednesday, January 25, 2006 - 02:48 pm, by: Mark Northcott(My91gt)
Actually Ryan you may be right, called lexus and they had one with the same problem a couple of weeks ago, was the coil pack. Leads are being tested now... So yeah. Bout to call Neil and order some coil packs lol and some leads.
Wednesday, January 25, 2006 - 02:57 pm, by: Mark Paddick(Sparks)
I have two ECUs here doing the same thing so it's a good chance that's the problem. Both are extremely rich at idle. One actually drives OK once it is over about 1500 rpm. Going price for a 2nd hand one is in the $200 to $250 range. Often they can be repaired and sometimes they just don't want to be. I don't have any good spares ATM.
Wednesday, January 25, 2006 - 03:00 pm, by: Mark Northcott(My91gt)
the thing that I'm finding funny is how it's only on one side of the engine...
I have been told it's a good chance it's the coil pack. Damn public holiday in the middle of the week would make things alot easier as to getting stuff if peoples were still trading tomorrow. haha
Wednesday, January 25, 2006 - 03:13 pm, by: Mark Paddick(Sparks)
One side of engine IS strange, maybe it was a crook cat all along as it is the only thing I can think of common to one side. There are two igniters, dissys, caps and stuff but their outputs are split to both sides.
Sounds like a coil pack to me also. I accidentally left one of mine unplugged on mine when I did some work last time (turbo model) and the car sounded and drove as badly as a WRX.
Wednesday, January 25, 2006 - 05:18 pm, by: Mark Paddick(Sparks)
The problem is that once the spark leaves the coil pack it goes through a distributor to two cylinders on each bank. You would need two faulty coil packs but only for 1/2 the time, same for distributors and rotors. Maybe damaged plug leads on one bank, cam on one bank or exhaust. Or 4 faulty injectors all on the one bank. Even the ECU would have a hard time keeping the fault to one side
Wednesday, January 25, 2006 - 05:30 pm, by: Mark Northcott(My91gt)
ok my bad. Cylinders 2,3,5,8 aren't working which is the drivers side coil pack.
Pulled off the dizzy cap and rotor button both are McF--ked. Corrison n •••• through them both just cleaning up now to see if it will at least fire on 8 cylinders.
Thursday, January 26, 2006 - 03:48 pm, by: Mark Northcott(My91gt)
Thanks Steve I'm going to order 2 new coil packs tomorrow from James at Castle Hill Toyota $142.50 each Dizzy Caps - $45.00 each Rotor Buttons - $15.00 each New Leads $170.00
So yeah that wallet is going to be fairing a little worse for wear. But i figure cuz no one is exactly sure what could be causing it I'd rather spend the extra and make sure it's ok. Cuz if's one side's gone there's prob a good chance the other side isn't far.
But when u look at the old spark plugs they have RS some have signs of corrison and others extreme heat.
Thursday, January 26, 2006 - 09:04 pm, by: Luke Middleton(Spook)
Mark,
I have a similar problem to yours, though mine is missing under load once the engine warms up. I picked up a set of dizzy caps and rotor buttons and fitted them last night and still have the same problem. My old rotor buttons were cracked. The car does run smoother when not missing, but again once warmed up, put your foot down and it misses like a mad bastard. Did James quote you on the parts? - I purchased the parts from him on Wednesday and he charged me $36.03 per rotor button and $57.20 per cap. If you pick them up for the prices you listed, I'm back for a refund of the difference. I suspect I may have a faulty coil pack or ECU.
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Ooops, that's the next thread down. 
