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Neutral
Joined: Jul 2018
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Hello from ny! I have a 2010 clubman s. On cold starts it runs awful! Misfire on all 4 cylinders. After a few revs it smoothes out. I have replaced the plugs and coil packs. A local tech suggested a can of sea foam in the tank. Same symptoms. He then cleaned the valves of carbon. Twice. He says the hpfp is working right. Anybody have an idea what i should do next? Getting frustrated. Cel is on and car has 46000 miles on it.
Last edited by Mad mini 2010; Jul 2, 2018 at 06:55 PM.
6th Gear - An Official NAM Greeter
Joined: Mar 2016
Posts: 2,990
Likes: 331
From: Southern oregon
Hi and welcome to NAM!
Before you throw a bunch of parts on it, pay an indie shop to run a scan on it, to see what codes, both common and hidden. It may just need a cam or crank position sensor!
Before you throw a bunch of parts on it, pay an indie shop to run a scan on it, to see what codes, both common and hidden. It may just need a cam or crank position sensor!
Welcome. 
Scan it first. +1
Scan it first. +1
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MINI Guru/ MINI Owner Since 2004 | NEW Lifetime Part Replacement | Local Pickup
Milltek | Genuine MINI | Forge Motorsport | NM Engineering | ECS Performance | M7 Speed
Customer Service Hours: 8am-8pm EST|Sales Team Hours: 8am-11pm | SAT 10am-7pm 800.924.5172
6th Gear
Joined: Jun 2014
Posts: 2,244
Likes: 264
From: Dover, PA
Welcome.
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
B2AAA (I don't have a listing of this one)
P173B MINI - CAN Engine Coolant Temperature Invalid
Sound like the Coil Pack might be cracked. I would check Coil Pack, Ignition Wires, and Spark Plugs. Check for cracks, corrosion, wear or torn boots, and rust.
But that is only a start.
Best of Luck.
Motor On!
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
B2AAA (I don't have a listing of this one)
P173B MINI - CAN Engine Coolant Temperature Invalid
Sound like the Coil Pack might be cracked. I would check Coil Pack, Ignition Wires, and Spark Plugs. Check for cracks, corrosion, wear or torn boots, and rust.
But that is only a start.
Best of Luck.
Motor On!
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6th Gear - An Official NAM Greeter
Joined: Mar 2016
Posts: 2,990
Likes: 331
From: Southern oregon
P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
With these codes, usually the cam position sensor and or the crank position sensor and prime candidates for replacing!
When this one is on: P173B MINI - CAN Engine Coolant Temperature Invalid.
The thermostat needs replacing, or the DME (ECU) may have an issue.
Make sure to get some contact cleaner and spray all the wiring connections you have disconnected are sprayed. Also the main coil plug is a corrosion area and special attention should be done to it!
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
With these codes, usually the cam position sensor and or the crank position sensor and prime candidates for replacing!
When this one is on: P173B MINI - CAN Engine Coolant Temperature Invalid.
The thermostat needs replacing, or the DME (ECU) may have an issue.
Make sure to get some contact cleaner and spray all the wiring connections you have disconnected are sprayed. Also the main coil plug is a corrosion area and special attention should be done to it!
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