Got my built 7m running last night!! couple questions. Vid. on post 66

[92nsx]

Ok well thank you for all the help, and the education on the TPS. For shits and giggles I will pick up a 10k pot, maybe even a ten turn pot so I can figure out what ohm level makes the TCCS un happy. I will connect it to VTA and E2 and see what she dose. Also I can search around for a different TCCS, if I can find one at a decent price. Do you know what year TCCS will work for my 89? Is 89-92 all the same? I am guessing it has to be from a M/T 7MGTE.

Do you have any idea why the engine idles when the TB is open to the world, and using no metered air?

If anything I will wate untell I get my stand alone and hope we can figure it out then.

 

[Zumtizzle]

Is your ecu brown plug or yellow plug?

(89 is a sketchy year)

 

[92nsx]

Yes, it is gray plug. I just dont know if the 90-92 ecu will work for me.

 

[92nsx]

ok well playing with the TPS some more here and I found this. At 550 mv(VTA-E2) the idle shoots up to 2900-3000 and stays there. At 549 mv the idle is doing the jumping thing. So any value less the 550mv the Idle is jumping. the ohm reading at 550 mv is 1005 ohms. Also code 41 dose not show up, code 51 dose, I am guessing because the IDL is not there.

When I open up VTA more the idle dose not increase or decrease as long as I stay above the .550 mv point.

BTW: this is with the TPS of the TB, and throttle plate is closed all the way.

 

[figgie]

umm

I know that you are not running the stock TCCS without a TPS that has a IDL switch or one that been rigged to act like an IDL switch.

Right??

Complicating thing more than they need be.

What year is the ecu of the car?

 

[92nsx]

umm

I know that you are not running the stock TCCS without a TPS that has a IDL switch or one that been rigged to act like an IDL switch.

Right??

Complicating thing more than they need be.

What year is the ecu of the car?

I am a little confused, sorry.
I am using stock TCCS & stock TPS
Car is 89 turbo with OEM TCCS and OEM TPS sensor.
I also have been confirming tests with another TPS I have that is out of a 88 turbo.

 

[92nsx]

Any one? What is needed to fix this problem? Full stand alone? MAF PRO? Different TB? New intake manifold? Intercooler? IC piping? Turbo? Anything????? This Supra can not be driven this way!!! And I really dont want to part it out or sell it. I also do not think Toyota will have any clue what to do. When I called them and they said they "probably" can't do anything to fix it, (once I told them about the mods, what it is), but they said bring it in and we can look at it

This is a call out to ANYONE, if you can please help!!!!!!!!!!

 

[IJ.]

MoTeC

 

[Kristian_Wraae]

Did you try different ECUs?

A friend of mine had the same problems with strange crappy idle, misfiring and idle that shoot into the sky. His car was a Frankenstein car made out of several different years.

They had the correct ECU (89+ and engine harness for 89+). But it turned out that the ECU was wrong after all. They exchanged the ECU to a pre89 and all was well. And also the CPS was faulty.

Don't you have any friends with Supras? Maybe you could borrow a new ECU from one of them. Get one of each and have a go at it.

 

[92nsx]

Ian,
MoTeC I am only worried about a basic fuel map, setup, and suck for it such for it. I am guessing they do not send a a "basic fuel map" with there EMS for a 7M and will need everything programed for start up. With my current problem I do not know if one could data log it eather. Also with a a MoTeC I do beleave the whole engine needs to be rewired correct, or just the TCCS plugs? M600, M800?

I am guessing people do not like the AEM EMS plug n' play for our cars?

Kristian,
There are a couple other supras around here but they are eather non-turbo or 87 turbo. So far no one has steped up to let me swap the TCCS local. A pre 89 TCCS will not fit my car as it has a a gray, 89, plug set up.

 

[IJ.]

Rob: While the MoTeC isn't PlugNplay it WILL work with all of the stock sensors/components.

Base map takes about 15>20 minutes to get something that will run the car well enough to drive then another 20 minutes road tuning will get it good enough to get to a dyno and get right.

There's a LOT of fine tuning/fiddling to get everything set to run how you want but not too many tuners will take the time to do this all anyway as time =$$$

The AEM PnP is another option but not one I've been hands on with, I know the MoTeC inside and out and wouldn't hesitate to recommend it as their service/support is second to none.

It costs more but in my opinion is well worth every cent.

There are a LOT of other options when it comes to standalones and these days very few are "bad" you just need to sit down and draw up a list of things you want it to actually do and find a unit that fits the bill.

I tend to max out any hardware I get my hands on and the MoTeC is no exception so I've had to option it up a few times and this is where it gets expensive.

 

[emiliorescigno]

You're welcome to borrow my ECU sometime, I'm not sure what exactly it is...but I know it has yellow plugs...

 

[92nsx]

Um....thank you Emilio, I wonder if it will fit my TCCS plugs? Yellow (pre 89) ECU's is normally differnt (larger)and have 4 plugs,(one extra harness with like 4 wires on it) I dont think so but we could try. I know your are 90 n/a to turbo, do you have your Supra with you at state? Or maybe even have a random pic of your ecu. Eeather way give me a call if so.

 

[need new tires]

no dis to JJ but sometimes it is just faster to hang new parts. but most don't have 5 supras to swap parts with i guess(I'm spoiled). JJ is going about solving the problem the true way and actually finding the problem. its like rebuilding a starter,alternator, pumps etc. its just not worth the time anymore(in most cases).

i say swap TB, then swap ecu. if that fails it goes to the harness.

again just my opinion

-shane

 

[92nsx]

Swaping the TB will produce a whole new slue of its own problems since the TPS will not be OEM to this TCCS But yes I would like to swap it out but again it would not cause code 41.

TCCS swap: yes, I would like to so that but no one around here has one. And to spend $150 to buy a "used" one, I would rather put towards the EM system, then a "spair" TCCS witch rarely go out and would get replaced by EM system anyways.

****If any one out there has a spair for me to test mine, I will be more then happy to pay for the shipping costs and buy you a few beers.*****

The Wire harness under the hood will never be replaced with a oem one If anything ever got that far MoTeC would already be installed, and custom harness can be made for 1/8 the cost of a toyota one. Again the only reason I would replace the harness is due to a broken wire I could not find/fix. But since all wires(from sensor harness to harness at TCCS) have great continuity (.2-.1 ohms) there are no broken wires thus not needing the harness to be replaced.

Thank you for your input Shane

 

[92nsx]

Checking to see if any one else has any other ideas. Started looking into MoTeC, John Reed has not got back to me yet. I search more on Google and found one place that had prices listed and the basic M600 was $3999:aigo:. So I am guessing by the time options are added and such it will be close or over 5k. I think I will just go with AEM EMU since it seems to the same options, just no DBW but that is ok. Sean got his AEM for $1400 w/ GM map sensor/air temp. I would rather save the $3500, and also have my GT42R or GT37R turbo :evil2: plus extra for what ever.

Anything I could do/add to throttle plate to make it have a tighter fit? Just looking for any ideas for stuff to try since this is a long weekend and I have no plans.

THX

 

[jdub]

The AEM will work well.

Just get a new TB as discussed earlier...the homemade one you have is out of round. I doubt you can fix it without a new body.

 

[IJ.]

Rob: I never said it was the cheap option

 

[92nsx]

Rob: I never said it was the cheap option

You got to pay to play, right. LOL I just didn't think it would be 4 time the price of a AEM. more like 500-1000 more.

Any who I am working on my temp displays this weekend. Pics. tomarrow

 

[IJ.]

ALL the cool guys have one