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Eric
Eric, Automotive Repair Shop Manager
Category: Kia
Satisfied Customers: 23196
Experience:  20+ yrs. experience as repair shop manager and technician.
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2002 Kia Sedona: overheated..coolant..leaking hose..car wont start

Customer Question

My 2002 Kia Sedona minivan overheated & cut out today. We added coolant/antifreeze & replaced the leaking hose but the car won't start. The code on the scan was PO 340 & said Camshaft Position Sensor A Circuit Bank 1. Do I need to replace the camshaft position sensor & how difficult is that? Also, will replacing that part make the car start or is there likely to be another problem. We just had ignition coils, thermostat, gasket & spark plugs replaced yesterday.
Submitted: 1 year ago.
Category: Kia
Expert:  Eric replied 1 year ago.
Hi,

While a bad cam sensor can be the cause of a no-start condition, so can a jumped timing belt which would also set the code for P0340.

The cam sensor is behind the upper timing cover:
graphic


You remove the upper timing belt cover to replace the cmp sensor. Takes about 30 minutes.

I would suggest removing the timing covers and verifying that the timing is correct and if it is, then replace the sensor. If not, then it needs timing belt job

timing marks:

image




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Customer: replied 1 year ago.
How do I verify that the timing is correct?
Expert:  Eric replied 1 year ago.
Hi,

Ok, you have to remove the #1 spark plug, have someone turn the engine over by using a socket on the crankshaft pulley and turning clockwise while you have your finger over the #1 spark plug hole. When you feel air pushing your finger off the hole. It is at TDC(top dead center). Now look at the timing marks on the camshaft sprockets and on the crankshaft sprocket. They should line up as shown in the diagram I already provided.

The #1 spark plug is the one towards the firewall that is closest to the engine pulleys.






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Customer: replied 1 year ago.
That sounds pretty complicated. Should I just replace the camshaft sensor first & if the car still won't start I an get more help or would that just be wasting money? Is there a particular brand I should buy or are they all pretty much the same?
Expert:  Eric replied 1 year ago.
Hi,

Cam sensor is only $45-55, depending upon store you go to. I would go ahead and replace it to start with, and if still no-start, either I can walk you thru the process or have a shop check the timing belt for you.

All the brands are pretty much the same for the cam sensor




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Customer: replied 1 year ago.
I know basically nothing about cars. Is changing the cam sensor something I could do? I don't want to have the car towed to the shop if I can avoid the expense.
Expert:  Eric replied 1 year ago.
Hi,

yes, you can do this yourself.

You will remove the 10mm bolts that hold the upper timing cover(there are 2 upper timing covers- remove the one closest to the front of the vehicle. when facing the belts it will be to your right). Once removed, remove the retaining bolts for the cam sensor, unplug it and remove. Install in reverse.



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Eric, Automotive Repair Shop Manager
Category: Kia
Satisfied Customers: 23196
Experience: 20+ yrs. experience as repair shop manager and technician.
Eric and 4 other Kia Specialists are ready to help you
Expert:  Eric replied 1 year ago.

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