27 replies to this topic

[Turch09]

I will ask of the shop plugged it in but I'm in Victoria Canada so not sure if they have a reader ! I'm taking it to the shop tomorrow will have them replace the stepper motor get them to check all the vac lines and see what happens

[Bobbins]

I'm jealous ... I did a week kayaking around the Desolation Sound area a couple of years ago, you live in a great part of the world!

 

Stu.

[genpop]

Hi there is free diagnostic software available:http://www.theminifo...-reader/page-11

as well google for mems-diag and mems-gauge. All you need is a 5V usb-ttl converter  and the conection to your car.

You may diagnose if your map sensor , and temperature sensor work  as well as if your IAC is working and a lot of other things.

[Turch09]

They don't have a reader here and also it's Japanese so they wouldn't be able to read it

[Wiggy]

The fact it's Japanese doesn't make any difference. Late Japanese models were hybrids. Mostly SPi tech, with an MPi ignition system.

Few garages would be able to fix any car with an ECU without having at least a basic diagnostic reader.

Replacing the Vac Pipes and the Stepper MIGHT fix your problems, but maybe not. That could be more money down the shute. A Sykes Pickavant ACR4 (there's one or two others) could be a good investment if you want to keep the car for a while.

And Vac Pipes changes, sensor changes and stepper changes are very DIYable.

[Turch09]

Would this be the tool to get ?

https://www.ebay.com...ogAAOSw5UdbWGbc


Or should I try this

https://rover.ebay.c...tm/283394025396

Edited by Turch09, 27 February 2019 - 05:35 PM.

[genpop]

@Wiggy

Hi what is a Pickavant ACR4 able to do more than free software?

Even the mems-diag can do logs. ( yes it is a bit tricky  to export it but it is possible).

Without a logfile you have to decide immediately where or what the fault is.( If you are a professional working in a garage with a lot of expierence it is ok)

with a log file you may diagnose later and ask other people who are faniliar with that car and its faults.

Or do you sell them?

[Turch09]

So the shop has no idea and they say the vaccume lines are all fine! It runs alot better with the tps unplugged and when it warms up it doesn't rev hunt anymore. Not sure if it's good for the car to have the tps unplugged tho?

[Wiggy]

@Wiggy
Hi what is a Pickavant ACR4 able to do more than free software?
Even the mems-diag can do logs. ( yes it is a bit tricky to export it but it is possible).
Without a logfile you have to decide immediately where or what the fault is.( If you are a professional working in a garage with a lot of expierence it is ok)
with a log file you may diagnose later and ask other people who are faniliar with that car and its faults.
Or do you sell them?

I've no idea. I don't have an SPi, I have an MPi. And the free software doesn't work with MPi. So I can only comment on what I've used.

[genpop]

Hi Turch09,

can you do do it yourself work? Do you have laptop, tools to work on the car? Familiar with welding jobs, do you have a voltmeter and are familiar with it?

Have a look to your TBI unit. Have somebody switch on and off the ignition.There should be a noise from the stepper motor and the butterfly should move slightly. If not take the tbi apart and have a look to the stepper motor.TPS should regulate between 0,5 and 5 Volt.

By the way, unplugging TPS will not hurt engine, engine will run in limp mode and run very lousy with a high fuel consumtion. In worst case your catalytic converter will die!

[genpop]

and of course read this:http://www.theminifo...oint-injection/

Edited by genpop, 28 February 2019 - 07:18 AM.

[pete l]

What ECU does this car have ? the 2J MPI one ? 

What diagnostics plug do you have ?

[pete l]

If you have the MPI diagnostics plug then you could get one of these.

 

https://www.aliexpre...sAbTest=ae803_4

 

I have one and have compared it to a T4 that I now have and the readings are identical.