The 87 4Runners been running with issues like a malfunctioning TPS and a head gasket leak for a while now. I've got a replacement engine set up for it, which leaves me with the exhaust.
Its beginning to rot out bad. I'll probably see if a shop can either booger some patches in or a full single exhaust. That leaves the cat. Its 27 years old. I can only imagine how plugged it is with ago and the carp tune I have on it. I also don't have $100 on top of the rest of the cost of the pipe fabrication to buy a new converter.
My question is this: can a 1987 Toyota 22RE run without a cat? The EFI is an ancient system. Can it run fine without being re-tuned? Before you go saying catalytic converters are necessary emissions equipment, the crap tune that it had for the last 6 months is far worse than no cat.
What say GRM?
It does not require a cat to function. It will have no effect.
Depending on which system you have, you could get a MIL.
Easily taken care of.
But don't throw away the old cat... If the matrix is still inside the cat can be worth money at the recycler... At least in Maryland anyway...
parker
Reader
7/30/14 8:55 p.m.
The O2 sensor is upstream of the cat. It will have no effect to remove cat.
noddaz wrote:
But don't throw away the old cat... If the matrix is still inside the cat can be worth money at the recycler... At least in Maryland anyway...
87 is probably the pearl-bed catalyst. Still worth a couple bucks, but most cat collectors can't really efficiently extract the metals from it so they often skip it.
I will also echo the others... you don't need a cat for the engine to operate. Worst is that it may cause the engine light to come on, but its highly unlikely. There should only be one O2 sensor before the catalyst. Since there is no sensor after the catalyst, the computer doesn't even know it exists.
Thanks guys. My wallet is smiling.
FYI
http://stores.ebay.com/Performance-Curve/_i.html?_nkw=2%22+converter&_sid=60497141&_sop=2&_trksid=p4634.c0.m14
Cats needn't cost $100
I've welded $30 cats with positive results, but as mentioned above, with no downstream sensor the should be no negative effects. Shoot fire, baby.
OBD 1 on back does not monitor the catalyst whatsoever, and you can fake out the OBD2 systems pretty easily.
