'03 Proteg has a rough idle

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HombreDeFamilia

Member

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'03 proteg LX

• May 18, 2010

• #1

'03 Proteg has a rough idle

First post, whassup guys. My new familia is puttering once it gets warmed up. 2-5 minutes after a cold start, the engine starts going pop, pop-pop (usually in that pattern, one, followed by two consecutively, every few seconds) any time it idles. It's almost imperceptible on the tach, dropping maybe a couple dozen revs. And this never occurs while in gear, always smooth operation. Any ideas before I take it to the shop?

 

M

McBadass

Member

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2009 MS3

• May 18, 2010

• #2

HombreDeFamilia said:

First post, whassup guys. My new familia is puttering once it gets warmed up. 2-5 minutes after a cold start, the engine starts going pop, pop-pop (usually in that pattern, one, followed by two consecutively, every few seconds) any time it idles. It's almost imperceptible on the tach, dropping maybe a couple dozen revs. And this never occurs while in gear, always smooth operation. Any ideas before I take it to the shop?

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My guess would be vacuum lines. theres a thread around here somewhere that shows how to check for a leak in the vacuum lines with soapy water. Did you recently change anything about your engine?

 

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HombreDeFamilia

Member

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'03 proteg LX

• May 18, 2010

• #3

I bought the car two weeks ago and it looks bone stock. I have a couple of aftermarket bolt-ons coming, but I haven't done anything save change the oil yet. I'll hunt around for that post, thanks for the tip!

 

M

McBadass

Member

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2009 MS3

• May 18, 2010

• #4

If you stay around here you can find guides and how-to's on anything..... and great deals on almost all parts (stock and after-market)

 

S

Sliver5

Member

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2002 Protege 5

• May 18, 2010

• #5

Try cleaning your EGR valve, there's a thread on how to do it in the How-To section of the forums. Its a common problem among the proteges.