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Ron, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 35523
Experience:  35 year in the Auto repiar business ASE Certified
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Have a hyundai santa fe 4 cyl.. just changed the head and

Customer Question

hello, have a hyundai santa fe 4 cyl.. just changed the head and timing belt... now when i start it it runs really rich.. when i unplug the cam sensor it all smooths out for 10 seconds then dies.. any answers?
Submitted: 1 year ago.
Category: Hyundai
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

Is the check engine light coming on and if so can you tell me what fault code and or codes are setting?

Customer: replied 1 year ago.
no check engine at all
just rough running
Expert:  Ron replied 1 year ago.

If you where not having this problem before the head and timing belt where installed I would go back in and recheck the timing belt alignment.

Customer: replied 1 year ago.
well i have done that.. checked it twice actually.. why would it smooth right out when i unplug the sensor toy the cam.. can it be a bad computer?
Expert:  Ron replied 1 year ago.

Unplugging the cam sensor is only tricking the computer and likely masking the problem. If its an electronic concern there should be a code and or codes setting.

Customer: replied 1 year ago.
okay.. checked everything on this lil car.. and i found that the one and three cylinders are not getting fuel or firing....the plugs are not really soaked so.. i changed around the injectors same thing.. so i ask.. what can it be now.. is there a fuel sensor or something.. there are no codes at all flashing
Expert:  Ron replied 1 year ago.

Are you getting power to the power side of the suspect injecotr and is so are you also getting the ground switching signal from the ECM?

Customer: replied 1 year ago.
is there a limp mode where it shuts down if the crank sensor is faulty.. i'm told it sometimes does not give a code
Customer: replied 1 year ago.
it is two cyl. 1 and 3 that are not firing... well there is spark just no injector interaction

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