KevinWestdijk

Hello I'm new to this forum so my profile is kinda of blank at the moment. The coming weeks I will ad some pics cause at the moment uploading from my iphone won't work(?).

The problem I have is a strange one (for me btw )

After garaging my Saph for many years I am trying to get her up and running again.

The damned thing had many faults which had to be sorted...I sorted most of it and replaced everything possible, sensors, filters, fluids and so forth.

Now the only problem which is left is this. I had a faulty TPS which caused stalling and generally let her fall dead (with a bang). I replaced it with a second hand PF09 from a Ducati. Now it idles at 2500 rpm hot or cold engine it doesn't matter. With the ISCV connected. Without plug connected I adjusted back to 500 rpm on a hot engine all electrics off.

A few facts:
I replaced all engine sensors no exceptions
I gapped TDC sensor
Replaced fuelfilter
Adjusted fuelpressure to specs req for map
I replaced ISCV
TPS was a second hand one and placed it same position as the old one.
Without ISCV connected it drives fine no hickups whatso ever. It pulls smooth from the line.
Currently not running boost, CO has to be reset.

Is my mindset correct;? A MW L8 Ecu with a black PF09 TPS will generally set itself to "0" (Idle) while throttle loose thus idling? I can't explain why it wants to Rev this high at Idle position.
Can someone set me straight? What am I missing.

Further specs of my Cos is a healthy oldschool spec running a T35 on greys a flowed head and mild cams. The ECU is a non lambda L8 red top.

So hoping for some help...the upcoming weeks I"ll complete my profile

Regards Kevin

Turbosystems

iTrader: (5)

set the tps closed throttle voltage to 0.23v
it is important that the ecu sees 3-5 degrees of throttle angle at closed throttle

KevinWestdijk

Ok I did give a little angle while placing like the old one better adjust and measure is what you are saying right(?)

Turbosystems

iTrader: (5)

ignition on engine not running ecu plugged in, cover off the hair brush, meter set to 20v dc, back probe pins 11 negative and 17 +ve
adjust the tps till meter reads 0.23 volts throttle closed

KevinWestdijk

Usefull I will adjust tomorrow or wednesday and will feed back the results. Thanks for helping so far!

KevinWestdijk

Ok did some measuring...
Between 11 and pin 15 0.008 V.
I have an old diagram wich states pin 15 as MAP sensor and pin 17 for TPS.
So to cover all bases I measured both with results between .008 and .010 V. I also took another ground from the car and measured pin 15 and 17 again with same poor result. Any advise what to do next?

Turbosystems

iTrader: (5)

My mistake tps is pin 17 I have corrected all the posts with the correct pin outs for future search referencing
These things happen when you are an old senile confused old antique like me lol
Is your ecu powered up and are you doing your tests with the ecu plugged in and back probing the pins, is your meter set to 20volts DC
pins 1and 19 are ecu earth and are connected to the inlet plenum, pin 20 is battery voltage +ve. You should get battery voltage at 1 and 20 also at 19 and 20 whilst the ignition is on or the engine is running
Take a measurement between pin 11 and pin 30 ignition on and ecu plugged in
you should get 4.7-5v
Pins 11 and 15 ignition on engine not running 2 bar map should give you 2.3volts
3 bar 1.5volts should read 1.7 volts

KevinWestdijk

Yes I did all of the above...double checked my multimeter and result is haven't measured a Volt what so ever..
BTW thanks for the help thus far👍👍

Need to read better just checking battery voltage now

KevinWestdijk

Ok...1&20 and 19&20 reads 0 Volt. Battery + and 1&19 reads 12,6 Volt wich rules any earth problem out I guess...

mike77cos

Did you ever get to the bottom of this, I now have the same problem on my 2WD that is running L8

KevinWestdijk

Well yes. Replaced all gaskets at the inletmanifold. And replaced the engine loom for a new one. It was giving me problems for a while. Even rewired some stuff but it was al breakdown maintenance so I opted for a loom from CW Looms.

mike77cos

Looks like my my problem was a stuck amal valve