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well correct me if im wrong but the o2 signal doesnt necesarily mean o2 failure, in my book under that it lists actually alot of things that would make that code, the o2 is just reading that the afrs arent right... the book is actually pretty vague and lists ignition stuff, fuel stuff and so...

Okay so I said that it threw code 21... and i know what a car does when it overheats and it wasnt overheating. also I put the whole thing back together like 1500 miles ago with the head checked and decked and a hks mhg and arp headstuds, and it doesnt run hot and it doesnt consume coolant nor...

Okay so today it finally threw code 21, which as far as my book says is o2 signal. it still is bogging down low.. I threw a spare o2 on and it made no difference. it seems to run fine until about 15-20 mins into a drive consistently, well after its warmed up. problem is the book lists tons of...

Look, all I was saying is I dont have a bhg, my car was not really overheating im sure of that so I guess thats probably a finicky coolant temp sensor, because I checked and it wasnt any hotter than usual, my rad isnt clogged, its an aluminum one and its new, Its safe to say that theyre separate...

Okay so I guess I should have posted my mods or my Iq level because I know how to check for codes and I know the 7m pretty well, as well as knowing cars in general pretty well. I guess I was just looking for supra gurus to point out something such as "the coil packs will cause that" or tps...

The diagnostics port.

Yes, I have a diag tool and it did not throw a check engine,( in the past when diagnosing different things this has worked great)It isnt a bhg. im pretty sure its an ignition thing and if not its a coolant temp/fuel thing.

My code scanner sure does grasp this concept.... as I said it has no cel codes.. look for newbs to pray on somewhere else.:aigo:

It isnt a bhg I know that for a fact and I did state that it didnt throw a check engine. also it was not really overheating. I drove It a bunch today and it never did the collant guage thing it just has that hesitation and I think its throttle based, but Ive heard with tps sensors itll want to...

Okay so I was driving my 87t home last night and after it gets up to temp It seems to not be able to get out of its own way down low... and in addition the coolant temp says its starting to over heat.... when I pop it into neutral to pull over the guage goes right back down to normal, then I put...