Running rough

SRBSTN2256

MEMBER
2005 MAZDA TRIBUTE
6 CYL
2WD
AUTOMATIC
143,657 MILES

Its missing real bad an has DTC PO 351-352-353-354 AN ive changed coils an it still missing bad wont even pull of when u press acelarator

Friday, August 19th, 2011 AT 3:59 PM

8 Replies

JACOBANDNICKOLAS

MECHANIC
109,645 POSTS

Hello,

It sounds like the engine can be hurt lets do a compression test to make sure the engine is okay. Here are two guides to help.

https://www.2carpros.com/articles/how-to-test-engine-compression

and

https://www.2carpros.com/articles/engine-vibration-at-idle

Please run down these guides and report back.

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Saturday, September 3rd, 2011 AT 3:16 AM

TURBOJAY

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1 POST

I had this problem and had to replace the head gasket did it myself cost me $230.00 all fixed. I love this site.

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Thursday, August 29th, 2019 AT 1:44 PM

MAZDAOWNER

MEMBER
3 POSTS
2004 MAZDA TRIBUTE
6 CYL
AWD
AUTOMATIC
50,000 MILES

When my tribute is stopped either in park or drive the engine sounds like its iddleing up and down however the rpm gauge stays at around 5000rpms, it does it whether warm or cold, it doesnt stall but just doesnt sound right, any ideas?

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)

RASMATAZ

MECHANIC
75,992 POSTS

Check the fuel pressure, idle air control valve and throttle position sensor to include the oxygen sensors-

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)

DEBIDO

MEMBER
2 POSTS
2001 MAZDA TRIBUTE
6 CYL
4WD
AUTOMATIC
110,000 MILES

I had an error code 0305 so my husband changed the spark plugs and the engine light went off. The truck is still running rough on startup, once it is warmed up it runs fine. My husband noticed a small hose that looks like an intake hose, he thinks this hose air into the engine. This hose is all squeezed in when the truck is running and while it is running rough. He pulled the hose off and the truck stalled and now my engine light is on again. Can you tell me if there is a sensor problem or mayble the idle air control valve?
Thank you

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)

KHLOW2008

MECHANIC
41,814 POSTS

Hi Debido,

Replace the hose and retest if problem persists. Some hoses cannot be disconnected as vacuum leakage can cause stalling due to the MAF not getting sufficient air flow reading.

What is the EXACT trouble code for the CEL to indicate now?

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)

DEBIDO

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2 POSTS

My husband took the idle air control valve off and just left it plugged in, when we turned the key to on, it wasn't working. He took it off completely and sprayed
carb cleaner in it and plugged it in again and it is moving up and down but not very quickly. How do you know if the idle air control valve is faulty?

If this isn't the problem then I will replace the hose.

The engine light went out on it's own.

Thanks for your help

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)

KHLOW2008

MECHANIC
41,814 POSTS

If IAC is working as described, it should be in working order. Unless the idling is out of specs and cannot be controlled, then the IAC is bad. A bad IAC would trigger a trouble code.

When IAC gets clogged with dirt, it sometimes takes a few cleaning session to get it in good working order.

Though the CEL might have gone off, the trouble code is recorded in the PCM and a scan would reveal what is it. It could be related to the problem.

The hose is part of air bypass and if it has collapsed, the amount of air is reduced and this can result in lower idling speed.

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Thursday, August 29th, 2019 AT 1:44 PM (Merged)