help..check engine again

[dindy]

no logs thats the trouble!! the cel comes on after driving about 30 minutesor more, but as i told you when i shut off the engine and restart it it will go off....not every time it comes on! but when it comes my car on idle its like shaky and ziff ziff ziff noise under bonnet. since no vacuum leak found. are there ways to check the o2 sensor?

[CTScott]

Originally Posted by dindy

no logs thats the trouble!! the cel comes on after driving about 30 minutesor more, but as i told you when i shut off the engine and restart it it will go off....not every time it comes on! but when it comes my car on idle its like shaky and ziff ziff ziff noise under bonnet. since no vacuum leak found. are there ways to check the o2 sensor?

That's tricky, unless you can drive around with a diagnostic scanner, so you can read the code before shutting it off. For the O2 sensor, a diagnostic scanner is the best way to verify if it is working correctly.

[Absolutely Red 12]

Originally Posted by dindy

no logs thats the trouble!! the cel comes on after driving about 30 minutesor more, but as i told you when i shut off the engine and restart it it will go off....not every time it comes on! but when it comes my car on idle its like shaky and ziff ziff ziff noise under bonnet. since no vacuum leak found. are there ways to check the o2 sensor?

If the car throws a CEL, even though it goes away, the code is stored.
Get a scanner, and retrieve the stored code.
If there are too many codes stored, erase them. Retrieve the new code as soon as the light comes back.

[nookandcrannycar]

Originally Posted by dindy

no logs thats the trouble!! the cel comes on after driving about 30 minutesor more, but as i told you when i shut off the engine and restart it it will go off....not every time it comes on! but when it comes my car on idle its like shaky and ziff ziff ziff noise under bonnet. since no vacuum leak found. are there ways to check the o2 sensor?

I really like some of the British words for things...such as bonnet (for hood). I once put some items in a locker at a train station in Madrid. The instructions for using the locker were available (onscreen) in about 8-10 languages. Two of the language choices were 'American' and 'British'.