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I meant technical other than car stuff. Cars don't tax me all that much. Although there is a lot to know they're not rocket science. I'm not gonna rev mine anywhere near that, let Porter blow his up if he wants. My interest is on the software in the ecu and it's idiosyncracies as even the...

I kinda suspected that based on the test setup. It's why I said earlier I was of the opinion the test was to verify something else and the name of the test is somewhat ambiguous. But since Grim is a pretty sharp guy I wasn't gonna chisel my belief in stone. Injection cut on decel is common to...

It's possible the software is written to make the fuel cut test mentioned a simulation of the airflow FCO and not the rev limiter but I'll test both and find out. The fact that you jumper the idle contact and float the TPS input to test rpm cut leads me to belive it might be associated with rev...

I know it does something as Toyota usually doesn't gimmick a feature any more than they have too. Just that I've never felt much of a difference. It's very easy to test the TEMS with the car parked and engine off. If the actuators are working the system is working unless there is a problem in...

Ok thanks. A bit of confusion though. When I said "fuel cut" I was refering to what Toyots calls fuel cut, as mentioned in the link for testing posted by Grim above. Are you saying that test cuts spark or is it a test to simulate the other fuel cut often mentioned here caused by excess airflow...

Justin, what aftermarket stuff are you referring to? I thought there was only one setup availble that was TEMS compatable. (The name escapes me at the moment). I've never been able to discern much of a difference at all on the stock system, even when the car was brand new.

Grim, at what rpm does this happen? If rev limited it has to be above redline. Are you saying you're exceeding redline in first gear? I was always under the impression the 7MGTE (at least in my 87) did not have a rev limiter. Nor is it mentioned in any of the factory TCCS documentaion I have so...

You can always run the TEMS diagnostics to check out the system. See your manual for instructions.

An ecu based rev limiter? In the 7MGTE? Hmmm....

If it's blocked you have a domestic engine. I did what Grim said (machined a plug and GTAW it shut) but if you have that cap you should "connect" it to your cooling system service. Replace it whenever you replace your coolant along with the other things that are associated with cooling system...

I'd have gotten back to you sooner but I decide to take two hours and overhaul my alternator. I have 19 years of driving a Supra with working TEMS (I assure you, *everything* on my car works) but OK, if you say so ;)

Yes, of course you can...with the right tools. Or did you mean without taking the head off? If you really meant with the manifold on it's going to be more tricky and you'll end up with something goofy since the helicoil bit is bigger. Frankly, I'd take it off and do them all. See bigaaron's...

Wow...just wow. I was wrong: you have three choices. I don't know what to say except there is no point in beating a dead horse. Best of luck to you.

Btw, since we're jawing about oil here's something those of you who care about cost versus value might like to know. Valvoline is giving away 5 quarts of either their MaxLife regular or full synthetic free. That's right, 100% full PAO syn oil free. It can be had in 5-30, 10-30, or 10-40 grades...

The TEMS has nothing to do with your problem as even if it went "bad" it wouldn't cause those symptoms. Hell, the system doesn't do much of anything even when it's working ;)

Fair nuff but being called ignorant isn't a slam, it simply means you don't know any better. Why would you change expensive syn oil every 3K no matter how many miles you put on the car? Why would you use such an expensive oil if the car burns it? Why would you even use 15-40 in the first place...

8 oil changes a year at $40-50 each? Yikes. Ignorance is expensive. My oil expenses are $28 per year, $20 of which is analysis. Once every 3 years (25-30K miles) or so oil cost jumps to $25 when it gets a full change out. I've found this car to be one of the cheapest, most reliable, and...

You should be able to get an assorment in any auto store but if not try these guys. Look in their store: http://tinyurl.com/egwjr Be sure you understand the sizing before you buy.

Can't see what? Where that connector goes to? It's not important....goes to something that won't prevent the car from running.

Since he posed the question in a language that made it difficult to understand I felt it only fair I provide the answer in kind.