A week or so back i asked if anyone could tell me about the erratic idle / running on my K74, unfortunately nobody replied . I'm now thinking it could be a either vacuum solenoids or the egr or both? Could some one tell me the test procedure for testing the solenoid valves and the egr so i can rule out either or both. My symptoms are upon start up everything is fine until warm up occurs then i get erratic idling ( rev counter down to 500rpm up to12-1500rpm) hunting like a misfire . if i rev engine it kind of clears but if i take it to about 3000rpm rev counter shows erratic reading and engine vibration. On a road test drives fine for a while then you get juddering like on tickover. I have noticed that the egr valve is opening and closing all the time is this normal? I tried posting a video but apparently the video file is to large and i cant seem to shorten it or compress it for some reason. i could post via messenger or whats app if someone wants to see it ( just pm your details and ill send it to you) Ps Im quite new to the workings of Mitsy pickups and trying to work out how things work on them.

cheers

Dartmoorman

Forgot to mention i have borrowed a Snap on Solus to read any codes that might be present but non are showing up whether there are any or reader cant pick them up? I was told this week that below 2006 vehicles uses MUT111 not obd2 ? could anyone shed some light on that please.

is the light on? solus normally reads them

live data too

No thats the thing no light on , getting on my tits so it is lol

thats a good thing!

watch the live data!

That's quite odd, Does the EML come on at all?

Ill plug the Solus in again , what kind of readings am i looking for really a specific value i take it? With regards the egr is that supposed to open and close so much all the time on these?

Quote: Daviemtc wrote in post #7

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That's quite odd, Does the EML come on at all?

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Not even when you turn the key on startup?

No Daviemtc , obviously you get dash light via key but start everything goes out as normal ,no EML showing nothing

OOH. ok . You can try earthing out pin 1 on the diagnostic port, the codes should then flash up like morse on your eml, The ABS warning light will also flash , cant remember the sequences off the top of my head short flash and long flash etc. but they are in the manual somewhere and plenty of chat about this on here in the past, just search eml codes, curious you're not getting an orange light though.

Don't have egr so cannae comment on that one. Any sensors out should give you a code MAF for example . Don't know if you'll get a code with injector issues, which is possible with yer symptoms,

Quote: Daviemtc wrote in post #13

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Don't have egr so cannae comment on that one. Any sensors out should give you a code MAF for example . Don't know if you'll get a code with injector issues, which is possible with yer symptoms,

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search "fault codes using the dash lights" in the forum search box first post by treeboa explains the code reading bit properly. G'dluck

As he says be CAREFUL with the wires , I remember reading too that pin 4 is an earth, I just wire pin 1 to the throttle pedal tho.
.

cheers

here you go...
If you are going to read your fault codes be careful as you will be making a connection from the diagnostics socket to earth, gettinjg it wrong may bollox something up so check twice and check again

turn ign OFF have a good look at the diagnosis connector under the drivers side dash, you need to locate pin 1 this should be in the top left but some have noticed the connectors upside down, check and re check

Make an earthing wire that will go into pin 1 and run it to earth, i use the steering lock, ensure this connection is secure.
Turn on the ign, read off the trouble code.

When you turn on the ign you will get a pause of 3 seconds, then you will get the flash code, for example 24 will show as 2 long flashes (1.5 secs each-- a pause of 2 secs then 4 short flashes 0.5 secs apart.) when all the codes have been read you will get a repeat of the first one you got. Turn ignition OFF before removing the earth wire.

To delete faults disconnect the battery for at least 10 secs, reconnect, let it idle for about 15 minutes.

The ABS will flash as well you can remove the ABS relay in the engine bay to prevent this if you wish but its not
a problem

These are the list of trouble codes



Code No Diagnosis item
11 Accelerator pedal position sensor
12* Boost pressure sensor system
13 Barometric pressure sensor (ECU Built in) system
14 Fuel temp sensor
15 Engine coolant temp sensor
16 Boost air temp sensor
17 Vehicle speed sensor system
18 Pump speed sensor system
21 Crank angle sensor system
23 Idle switch (accelerator pedal position sensor built in )
25* Timer piston position sensor system
26* Control sleeve position sensor system
27 Accelerator pedal position sensor (sub) system
41* Main throttle solenoid valve system
43 Timing control valve system
46 Injection correction ROM system
48* GE actuator (in the middle of control sleeve position sensor inoperative) system
49* Over boost (variable geometry control pressure system malfunction) <4WD>
51 EGR valve position sensor system
52 Variable geometry control pressure system
54 Immobilizer system

If the above-mentioned diagnosis codes code number with the asterisk can be displayed along with another code number in the parentheses simultaneously check the other code number before replacing the ecu

12 (41, 49), 26 (48), 25 (43), 41 (12, 49), 48 (26), 49 (12, 41)


ABS Brake system

11 Front right wheel speed sensor
12 Front left wheel speed sensor
13 Rear right wheel speed sensor
14 Rear left wheel speed sensor 11-14 Open or short circuit
15 Wheel speed sensor Abnormal output signal
16 Power supply system
21 Front right wheel speed sensor
22 Front left wheel speed sensor
23 Rear right wheel speed sensor
24 Rear left wheel speed sensor 21-24 Abnormal
25 Free wheel engage switch
26 4WD position detection switch
27 Rear differential lock detection switch
32 G Sensor detection system
33 Stop lamp switch system
41 Front right solenoid valve
42 Front left solenoid valve
43 Rear solenoid valve
51 Valve driver
53 Motor driver
63 ABS ECU



"The above guide is based on the opinion and experience of the individual member and is not endorsed by the L200 Forum, professional advice should always be sought before attempting a similar repair / modification, which is undertaken completely at the members own risk"

Thankyou Daviemtc

To rule out the EGR as being the problem, just unplug (and bung) the vacuum pipe going to the EGR valve - the valve then stays shut.

Quote: Heathen wrote in post #20

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To rule out the EGR as being the problem, just unplug (and bung) the vacuum pipe going to the EGR valve - the valve then stays shut.

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