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[devonkev]

Hello everyone!

So recently my 2.2cdx auto has been starting from cold really badly. It would always start but it would be very lumpy and as soon as you would try to pull away it would nearly stall as if it was getting no fuel. It has had these same symptoms before twice. First time was O2 sensor, second time was air flow sensor and both times I had to wait until it ended up in limp mode before it would give me fault codes so I knew what to replace.

This time It doesn't really want to even get into limp mode. It starts but then dies straight away. I cleared the fault codes and then I got it to start but it would rev above 2000ish rpm with sounding like it was going to die.

I just managed to get it warm and now it is , it restarts and runs fine? Someone suggested it may be a cold start sensor or something like that gone wrong?

Any ideas wouold be much appreciated?

many thanks

Kev

[feeutfo]

What where the codes that where cleared?

[devonkev]

Thanks for the reply!

These were on it before I started it. I guess they were generated from when I was trying to start it the morning before with no real luck. It ran but wouldn't drive.

P0110 - Intake Air Temperature Circuit High Input
 (01) - Not present

P0100 - Mass Or Volume Air Flow Circuit Low Input
 (02) - Not present

P1700 - SVS request via CAN
 (00) - Not present

P0135 - O2 Sensor 1 Heater Open Circuit
 (04) - Present

P0130 - O2 Sensor 1 Open Circuit
 (04) - Not present

P0203 - Cylinder 3 Injector Circuit Low
 (02) - Not present

P0204 - Cylinder 4 Injector Circuit Low
 (02) - Not present

P0202 - Cylinder 2 Injector Circuit Low
 (02) - Not present

Then I got it running and I refreshed the list and it changed to these

P0110 - Intake Air Temperature Circuit High Input
 (01) - Not present

P0100 - Mass Or Volume Air Flow Circuit Low Input
 (02) - Not present

P1700 - SVS request via CAN
 (00) - Not present

P0135 - O2 Sensor 1 Heater Open Circuit
 (04) - Present

P0130 - O2 Sensor 1 Open Circuit
 (04) - Not present

Then I cleared the remaining fault codes and drove it around for half an hour completely fine( now its warmed up!) and checked for fault codes again. Turned it off left it for 15 minutes and started it again, still no fault codes?

Im lost! Thats why I asked about a temperature sensor?

Thanks for looking!

[PhilRich]

When was the air filter last changed? It may be worthwhile removing the airbox top & inspecting the filter, at the same time removing any buildup of grit & dust in the airbox bottom. When re-assembled, disconnect the MAF plug & see if there is any change to the cold start/running issue. It may also be worthwhile to remove the MAF from the air trunking & carefully removing the plastic criss-cross cover & spraying the MAF sensor wires with either MAF Cleaner, Compressed Air or Isopropylene Alcohol to remove any oxidisation on the sensor. I know 'those in the know' will say it does no good, but I can only speak from my own experience, where it has indeed done the trick! If the MAF is not the culprit, it may then be time to look at cleaning the Throttle Body & related vacuum pipework. There is a guide for this in the Maintenance Section as indeed there is for checking & cleaning the Breather Tubes. Also check that the electrical connector to the vacuum pump (roundish gismo attached to the airbox by a half-round plastic cradle between the Coolant Expansion Bottle & Airbox) is firmly attached. HTH

[Marks DTM Calib]

Thats a lot of random codes!

Which sudgests to me a supply issue.

Check the supply wires to the ECU and the main ECU plugs including the main 0V connection on the engine.

[Sixstring]

Beat me to it!
was going to suggest a rogue (poor) earth could be at fault.

To check, earth the engine well with a jump start cable to the negative connector on the battery, and try and start again, noting the codes once more.

[Marks DTM Calib]

Beat me to it!
was going to suggest a rogue (poor) earth could be at fault.

To check, earth the engine well with a jump start cable to the negative connector on the battery, and try and start again, noting the codes once more.

Cough, no earths on a car, chassis grounding points, 0v etc etc but, not earth 

[Sixstring]

Yes, as an ELECTRICIAN, I know this, but was trying to make it a bit simpler for the O.P   seeing as I have no idea of his technical expertise...........

Good point, though. Asking him to "ground the engine on a ground point" didn't sound quite right. Easier to ask him to "earth" the engine???

[Marks DTM Calib]

Yes, as an ELECTRICIAN, I know this, but was trying to make it a bit simpler for the O.P   seeing as I have no idea of his technical expertise...........

Good point, though. Asking him to "ground the engine on a ground point" didn't sound quite right. Easier to ask him to "earth" the engine???

Nah.....lets educate them! 

[devonkev]

First of all many many thanks for all the input here guys. Looks like I'm going to have a busy evening tonight!
To sixstring, I'm an electrician too so I'm hoping we should be speaking the same language!