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mazdamaster577
mazdamaster577, Master Technician
Category: Mazda
Satisfied Customers: 691
Experience:  mazda master/shop foreman for 15 years.
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Tribute rough idle when engine is cold.

Customer Question

Tribute rough idle when engine is cold.
Submitted: 5 years ago.
Category: Mazda
Expert:  mazdamaster577 replied 5 years ago.

mazdamaster577 :

it either has a vacuum leak or a coil going bad. is the check engine light on?

Customer:

no I just had it in for a check engine which was egr flow insufficent. they replace vacuum lines and a sensor.

mazdamaster577 :

the intake gaskets are common to leak when the engine is cold. once it warms up, the metal expands and seals the leak. does it drive ok?

Customer:

when you first start it it fast idles for about 10 seconds then slows down and rpm fluxuance almost dieing.

Customer:

it still has a bit of hesation when you take off from a stop sign.

mazdamaster577 :

defantly sounds like a leak. I would replace upper and lower intake gaskest. the check engine light will come on soon.

Customer:

Ok this started about 2 months ago and is getting worse now that cold weather is here.

Customer:

also when it is cold I use to get a red light like a radator light until the car warms up, I do not get this now.

mazdamaster577 :

and it will contenue to get worse. the ruber gaskets have probably hardened over time due to heat and cold. they are like an old rubber band, will crack and break. the coolant level might have been low causing the red light. the shop that replaced the EGR sensor might have topped off the coolant system.

Customer:

ok makes sense I do live in the high desert and do not drive the car alot because I have a company vehicle.

mazdamaster577 :

wheather driven or not, they can go bad just from age.

Customer:

Ok thank you for your time.

mazdamaster577 :

no problem. hope this helps you.

Customer:

Yes and I will click accept for you.

mazdamaster577 :

thank you

mazdamaster577 :

have a good nigh

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