Bit of help with my wee rally car please.

[Tristan]

Hi all , I have a Ford KA Rally car , I've replaced the old 1.3 engine with a 1400cc , 16v Puma motor , good bit of headwork etc , and using Motorbike Throttle bodies , and the existing M4 that controlled the old engine . I have it starting , but it's incredibly rich , black smoke on blipping the throttle , misfiring and sooting the plugs , even leaving the pistons damp on top!
I'm using the standard fuel rail and pressure regulator from the Puma , and the standard Ka fuel pump.

Before I bring it to a Motec Agent's rolling road , can I tweak the AFR , just so I can make it run a bit sweeter , to check for leaks , be they oil , coolant or indeed vacuum? And either check or calibrate the Throttle Pot , as I've wired the 'bike one into the Car's loom.

Can I just connect to the Rs232 port on my computer? The car has a lambda sensor connected .

Thanks in advance , Tristan.

[OmarK]

Hi Tristan,

If your M4 has a serial number greater than 3000 then you can use a standard serial cable to connect from the M4 to your laptop. You can then download/install our latest version of M4 software. This will allow you to communicate and do some minor tuning before you take it to the dyno

[Tristan]

great ,cheers , I'll check the serial number tomorrow!
and if the serial number is less than 3000...?

[OmarK]

We have a PCI cable which is used to communicate with the < 3000 serial numbered M4s and all the M48s...

[stevieturbo]

Poor spark could also give similar symptoms

[Tristan]

We have a PCI cable which is used to communicate with the < 3000 serial numbered M4s and all the M48s...

I've ordered one today from my Motec agent! cheers

[Tristan]

Got it sorted , took it to myMotec man , TrackDayPerformance.ie , and we found the ECU was acting up , and wasn't getting signals from the TPS , or temp sensors etc . He fixed it ,and mapped it , running clean as a whistle now .

Oh and my 1st rally with the new engine was 2 days later , and we won our class! Happy days.

[Tristan]

Thread revival!

How do , all

I've been pottering away at the wee Ka , stripping back all un-needed bits of Ford wiring loom. Looking at the MoTec wiring code , it mentions PATS in a few places , anyone know what this is?

  Ford KA EEC IV 60 Pin ECU
1/7/2002
OEM Used Function                      Comments Wire Colour
1 No Backup 12 Volts Constant 12 Volts Orange/Yellow
2
3 Yes Vehicle Speed Sensor Callibrate White/Blue
4 No Heater Control Mod. White/Black
5 No PATS White/Green
6 Yes PATS Loop to 0 Volts Or Aircon Press Sw Black/Red
7 Yes Water Temp Callibrate Requires resistor White/Green
8 No Fuel Pump ON Violet/Black
9 Yes AFM Callibrate Brown/Blue
10
11 No Purge VSV Black Orange
12 Yes Injector Cyl 1 With PATS Black/White
13 Yes Coolant Fan Relay Black/Blue
14 Yes Injector Cyl 4 With PATS La Relay No PATS Black/Yellow
15 Yes Injector Cyl 2 With PATS Black/Yellow
16
17 No Data Link White/Green
18 No Data Link Blue/White
19 No Data Link Grey/Violet
20 Yes 0 Volts Black
21 Yes Idle Control Black/Blue
22 Yes Fuel Pump No PATS Black/Blue
23
24 Yes Mag Sync Signal White/Violet
25 Yes Air Temp White/Violet
26 Yes Sensor 5 Volts Yellow
27 Yes Octane Adjuster Callibrate White/Black
28 No Power Steering Brown
29
30 Yes Sync 0 Volts Brown/White
31
32
33 Yes Lambda Relay With PATS Injector 3 No PATS Black/Yellow
34 Yes Injector Cyl 3 With PATS Injector 4 No PATS Black/Orange
35 No Inntruments Overheat Signal ????? White
36
37 No 12 Volts As Pin 57 Violet/Yellow
38 No PATS Grey/Orange
39 No PATS Black/Orange
40 No 0 Volts Black/Yellow
41 No PATS Violet/Black
42
43 Yes Clutch Position Sw. Callibrate Brown
44 Yes Lambda Signal White
45 No 12 Volts Constant 12 Volts Blue/Red
46 Yes Sensor 0 Volts
47 Yes TPS White
48
49 No Data Link Air Flow Meter Grey/Violet
50 Yes AFM White/Blue
51 Yes Injector Cyl 1 No PATS Black/White
52 Yes Injector Cyl 2 No PATS Black/Yellow
53 Yes Fuel Pump With PATS
54
55 Yes Ref 0 Volts Black
56 Yes Mag Ref Signal Black
57 Yes 12 Volts Violet/Yellow
58 Yes Ignition 1 Black
59 Yes Ignition 2 Black
60 No 0 Volts Black/Yellow

[AdamW]

PATS = Passive Anti Theft System.
You say you are looking at the Motec wiring schematic, but this is fords system, nothing to do with motec??

[Tristan]

Sorry, I have that too, I just posted the above to show where I encountered the PATS acronym. It's an M4 in the OE Ford ECU case, with the OE Ford ECU plug.
Thank you.