19 replies to this topic

[llelkes]

Hi Everyone!
I have a 2000 mini MPI. The body had a bad shape, so I decided to repare it. Since I did not had so much time to do it by my own, I foud someone to repair the body and paint it. They also repared the gearbox (asked someone to repair the gearbox - 2. sp. synchron problem) and fit a Tuning Kit Stage 3 from minisport.
Now it looks great from outside - but it the engine is not running well.
They think the problem is with the ECU, but I do not whant to spend more money on try and let see (they aready changed some sensors - takes a long time - but nothing).

I am from Slovakia and here I did not know a good mini service so I decided to do it by my own. I already repared some cars by they were with carburator - so I am beginner with the injection engie.

End of my short storry, now:

Cold engine:
the car starts good, but the rpm at start is a bit high (something between 2000-3000)
runs also not bad (just from driver feeling)
Warm engne:
if I release the gas the engine is stopping or has a wery low rpm - dieing
if the rpm is around 2-3000 can drive, behaves as no problem (just from driver feeling)
if I set the rpm to 1000 - 1200 for a while (10 sec) than I release the gas - it holds the rpm around 1000 (as it should be)
SRS light is on all the time

My questions
- where to start?
- where can I get (buy) a diagnostic tool for the engine?

Thank You,
Laci

(sorry for my english ...)

[Guess-Works.com]

Look (listen) for an air leak, possibly in the inlet manifold. Possibly worth taking the inlet manifold back off and making sure the 2 split O rings which locate the inlet manifold to the head are present and not misaligned.

[llelkes]

Thank, for tip will check ...

any idea for an engine diagnostic tool?

[llelkes]

Hi Everyone!
I checked the inlet manifold, no leak ...
but!
found that there is a problem with the fuelling. After driving the mini and stopped, there is coming a ticking noise from the engine - some ventil for fuelling system (it is ticking for 30 secounds) and there is a perssure in the fuel tank. I take down the pipe going to the fuel pump the fuel was spurting out. If I take out the fuel cup it stopped.
Any idea why?
Thanks,
Laci

[llelkes]

Hi Everyone!

I visited a lot of services around my place, a reasult is better but not good.

The best was a rover service they changed some sensors to original rover ones and the servo for basic rpm. Now the engine is not dying but mnot runnig as it was before.

If the engine is warm - 1 st speed 1000 rpm , press the pedal - full gas, and the engine starts to pic up rpm very very slow. Aftre 2500 runs nicely.

Any idea?

 

Any idea for good Mpi Fault Code Reader? And some default values?

We ware able to connect to one of our computer and we are getting "live data" from sensors while the engine is running, but no errorcodes? Is it ok? Does the MPI mini stores errorcodes?

 

Thank You,

Laci

 

(I am really sad because my mini is more than a year is not running well, and nobody is able to fix it)

[mk1leg]

Hi..turn the key to Aux before start and pump the throttle 6 times......this will reset the ecu and start the engine....good luck

[Fast Ivan]

Hi..turn the key to Aux before start and pump the throttle 6 times......this will reset the ecu and start the engine....good luck

 

lol, really? that cant be true

[Fast Ivan]

the MPI will produce error codes if they are present.

 

Some values:

 

Lambda, this should change from high to low very quickly, the change will be to quick to note the figures but so long as they are going up and down (from rich to lean mixture).

Coolant temp sensor, this will be (obveously) the temperature in degress, so will increase as the car warms

MAP sensor, 30 at fast idle, 100 when first started.

inlet temp sensor, 20 to 50 degrees on a hot engine

throttle position, 4.5 degrees +

throttle switch, either on or off when the throttle is pressed or released

crank sensor, should just say its working, no values

cam sensor, should just say its working, no values

injectors, if I remember right they should be around the 1 mark or just below.

stepper position, if I remember right it should be around 40, I'll have to check this though and the injectors.

Hope this helps.

[mk1leg]

 

Hi..turn the key to Aux before start and pump the throttle 6 times......this will reset the ecu and start the engine....good luck

 

lol, really? that cant be true

 

yes it does give it a try........

[llelkes]

Thanks for the values ...

I had no time to test it, but the engine reset is working - my air-bag lamp blinked :)

[llelkes]

Hi,

I just bought

ACR4 30255400

I got several pods for rover Rover 1 300565 and Rover 2 300567

and cables with OBD connector 30214100, 30212400, 30212900, 30212700

unfortunately it is not communicating with my mini.

 

Please help me what do I need to communicate with MPI mini.

Thank You,

Laci

[llelkes]

Hi Everyone!
Finally communicating with Mini ACR4 and Rover V3 pod.

Values at warm engine:

I.A.T  79 (Intake Air Temperature)
E.C.T  97 (Engine Coolant Temperature)
R.P.M.  912 (Revolutions Per Minute)
M.A.P. SENSOR  62,7 (Manifold Absolute Pressure)
THROTTLE POS. 5,3
THROTTLE SW.  OFF
BATTERY VOLTS  13,5
O2 VOLTS. BNK. 1 4,27
F/BACK BNK1 ST  OFF
COIL 1 CHARG.T 1,63
COIL 2 CHARG.T 1,67
INJECTOR 2 P/W  1,86
INJECTOR 4 P/W  1,80
STEPPER POS.  77
CRANK SYNC ST  GOOD
CAM SIGNAL  GOOD
IGNITION SW.  ON
AIR COND.REQ.  OFF

Could You help me if these values are OK.

Thank You, regards
Laci
 

[tmsmini]

Your stepper position looks way off. It sounds like you may have been making adjustments to the idle stop screw. The engine should manage your idle.

 

The ACR has a procedure for resetting the stepper. You will need to find out why it has been trying to compensate. I believe the stepper range is 16-24 at idle.

Terry

[llelkes]

Hi

 

Your stepper position looks way off. It sounds like you may have been making adjustments to the idle stop screw. The engine should manage your idle.

 

The ACR has a procedure for resetting the stepper. You will need to find out why it has been trying to compensate. I believe the stepper range is 16-24 at idle.

Terry

 

Hi, the idle stop screw is not adjusted. What else can be the problem?

[Fast Ivan]

Have you done anything with the idle air control valve? cleaned it/changed it/checked for cracks on the housing?