2000 Pajero iO Starts for 5 seconds then turns off

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JTS076
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Hi. I recently purchased for $3k my
Make: Mitsubishi
Model: Pajero iO 4 Door SUV 4WD, Man
Model Year: 08/2000
Engine: 4G93 I4 16v SOHC MPFI {86KW} 1.8 litre
Series chassis: QA H76W

After 3 days owning it I had to do a complete top end overhaul. Replaced damaged exhaust valves with new set valve stem seals and machined head face and removed and cleaned re set rockers. Refitted cylinder head with new gaskets and head bolts, fit new timing belt kit with new water pump, new tensioners and seals, drive belts, new radiator, new thermostat. After $5.5k spent. Awesome, car drove smoothly for two months.

Recently degreased motor and high pressure (rinse not high pressure) cleaned motor. Went to start the car, it ran nicely for about four seconds then died. Had it towed back to mechanics for them to have it for 3 weeks, we’re they Found no fuel Pressure from fuel pump - they removed unit and found damaged plug not making contact 12volts. Temporary removed wires and Re fitted wires/connector to pump giving 12 volts and correct fuel pressure. No spark from back coil, they had spark on first crank now no spark at all - Suspect faulty crankshaft sensor - They Recommend replacing and reassess. I agreed to fit new crank shaft position sensor - Mechanic Supplied and fitted new crank shaft sensor / Found vehicle running for approx 5 seconds then shuts down - Requires further diagnosis - Mechanic called me and explained car still not going invoiced me $595.00 for sensor. Recommend auto electronic specialist and if I can get a tow truck to pick it up. I called Mitsubishi dealership to be told that’s not right what they have done to me and considering the money spent should have got a auto electrician out to diagnose it. I’m now dealing with General Manager regarding this. Any ideas? from a forum full of knowledgeable people would be appreciated as I Don't want to get auto electrician involved until I hear back.

I will try attach video of my problem

Thanks in advanced
Jamie, Perth, Western Australia ????????

had-z
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Your mechanic scanned the

Your mechanic scanned the vehicle prior to replace the sensor? If not, the first thing i would do is find someone to do a report for you and read the error codes registered on the ECU.

Whit that info your mechanic (or another one) will be capable of diagnose the problem.

JTS076
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Thanks for this, mechanic

Thanks for this, mechanic tells me they can’t communicate with obd, apparently no power to it

had-z
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The scanner tool should be

The scanner tool should be cappable of communicate with the vehicle if the key is on the ACC position (to read fault codes) maybe the scanner can't communicate with some brands. Unfornately if the engine is not running, live data of the sensors will be not available to read.

He charge you 595 USD for the CKP sensor? surprise

JTS076
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Yep, sure did. The sensor was

Yep, sure did. The sensor was $250, labour $245. The car starts, runs for 5 seconds then turns off. I’ve been told it might be the immobiliser, something to do with the ignition key. It reads it to start car, then ecu thinks it’s not the right key and it shuts the engine off. I tried to upload a video but could not do this

JTS076
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My apologies. $595 aud

My apologies. $595 aud

had-z
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Washed yourself the engine

Washed yourself the engine prior to the failure? If that's the case try to remember which electrical connectors was in contact with the soapy water/degreaser, seems like something produced a shortcircuit after the wash.

I don't know the Mpi engine, but maybe you can try to disconnect the IAC valve, this will force the ECU to use a default setting for that valve, the engine need the mix of air, fuel and spark to run. Since the injectors and sparks was serviced previously i suspect the problem maybe is related to the air intake.

JTS076
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Hello, So I earthed pin 1 on

Hello,

So I earthed pin 1 on OBD and I got below codes.

__ _ _ _ = 13
Barometric Pressure Sensor (ECU-built in) system (13C-10)

__ __ _ _ _ = 23
Idle Switch (accelerator pedal position sensor built in) system (13C-15)

__ __ _ _ _ _ _ = 25* refer code 43
Timer piston position sensor system (13C-16)

(43) Timing control valve system (13C-20)

had-z
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Nice, seems like the piston

Nice, seems like the piston position sensor was the original faulty one (solenoid timing control valve), this must be the fault preventing the engine to run correctly for more than a few seconds.

Check the wires and sensor (solenoid) itself.

fordem
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You might want to research these codes a little more.

JTS076 wrote:
Hello, So I earthed pin 1 on OBD and I got below codes. __ _ _ _ = 13 Barometric Pressure Sensor (ECU-built in) system (13C-10) __ __ _ _ _ = 23 Idle Switch (accelerator pedal position sensor built in) system (13C-15) __ __ _ _ _ _ _ = 25* refer code 43 Timer piston position sensor system (13C-16) (43) Timing control valve system (13C-20)

Assuming you're referring to the vehicle that matches the details in the first post of the thread, you're using the wrong manuals.

The error codes explanations you're listing are for a diesel engine not a gasoline engine.

JTS076
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Yeah. I seen this last night.

Yeah. I seen this last night. I looked in manual and came up with below

Pajero iO ECU Codes

__ _ _ _ = 13 (Ref page 13A-17) (102)
Intake air temperature sensor system

__ __ _ _ _ _ _ = 25 (Ref page 13A-23)
Barometric pressure sensor system

Am I correct in saying above 2 codes are in MAF?

__ __ _ _ _ = 23 (Ref page 13A-21)
Camshaft position sensor system

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