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Old 07-21-2019, 11:02 PM  
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Secondary air pump won't shut off?

2004 SVT Focus
I searched for this issue but couldn't find an exact match and/or couldn't understand the lingo used.

So I recently had the check engine light come on, and it came coupled with this issue. As I drive, I continue to hear the sound that I'm pretty sure is the secondary air pump running, kind of a hissing noise that I'm accostomed to on startup, and it normally goes away once the engine is warm. Now since the light has been on, whenever I run the car, it happens normally on startup, but then never shuts off while I drive. Other things that I've noticed are that the oil temp gauge seems to stay lower than usual. This is very recent so I'm driving in 75-90 weather, summer in Minnesota. Once when I let it idle for a while, I went inside to grab some things and came out maybe 3 minutes later, the sound that I think is the pump had shut off, and the oil temperature had gone up to what it usually sits at after running or driving for a short while, about halfway between the cold and hot sides of the gauge. Later while driving (without shutting off the engine in between) the hissing sound came back and the oil temperature dropped again (at the new low value it sits at about 20% from the cold end of the gauge). Other times where I have had it idling for a few or several minutes, the supposed pump has seemed to run the whole time, so this one time where it shut off was an anomaly. I haven't driven for a long period of time yet since this has happened, mostly just trips to work, the gas station, bar, etc. in a small city. The engine temp gauge goes up to a normal value even with this thing running, but the oil temp stays at a subdued reading.
Any advice on whether I'm understanding the issue or not, if similar things have happened to others, what I should avoid doing with my car in the meantime, would be appreciated.

I bike to work when it's not raining, so it's not like I'm in urgent need to drive everywhere. I plan to take the car in for service, but stories have made me paranoid of getting ripped off by mechanics since I don't know enough to spot fraudulent diagnostics, so I figured if I can have someone here maybe increase my confidence in my understanding of the issue, I can go in and have an idea of what's wrong already and how much work needs to be done.

Thanks, and happy driving!

stone-dog


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Old 07-22-2019, 07:10 AM  
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The SVT doesnt have a secondary air pump , what was the CEL you had ?

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Old 07-22-2019, 04:33 PM  
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Quote:
Originally Posted by 1turbofocus View Post
The SVT doesnt have a secondary air pump , what was the CEL you had ?

Tom
What's a CEL?
edit: sorry, Google says CEL is the check engine light. As far as I know my car only has one that I'd name the check engine light. It's the one that's orange and shaped like an engine.

If you mean the code, I have no way of finding that out

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Old 07-22-2019, 07:50 PM  
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Need to know the code , many parts places will check it for free

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Old 07-23-2019, 03:32 AM  
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I'll go to O'Reilly and ask for them to scan the codes for me

Last edited by stonedogmillionaire; 07-25-2019 at 02:46 PM.
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Old 07-23-2019, 06:23 AM  
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Not trying to be rude here but this is what I went to school for. The question you are asking is the equivalent of someone calling a doctor and saying I have a fever diagnosed me. There's ten thousand things that can be wrong with you, and there's 10,000 things that could be wrong with your car.
Every automotive parts store we'll hook up a scanner for free. The type of scanner that you need just to read codes you can get for under twenty bucks.

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Old 07-23-2019, 06:50 AM  
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Quote:
Originally Posted by stonedogmillionaire View Post
So there's nothing you can tell me but to get the code? The whole reason I posted was because I don't know the code. No guesses, no other information?
We can throw a thousand guesses at you.... They would just be guesses. That's not how you fix a car LOL.

Without the code, there is not much we can help you with. That is always step 1 when you get a CEL.
Buy a scan tool and check it for yourself. Not a bad thing to have handy with a 15 yr old car. Or go to ANY auto parts store and they will scan the code for you for FREE.
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Old 07-23-2019, 06:52 AM  
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The sound you are hearing may be the electric fans coming on, which is perfectly normal. There's a guess for you.....

The CEL may or may not be related.... Nobody knows....
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Old 07-23-2019, 08:47 AM  
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Does the Gauge cluster allow for you to go into debug/diagnoses mode and read codes that way or is it only through the ODBII port?

https://www.focusfanatics.com/forum/...test-mode.html

Looks like feild 6 will display or scroll the DTC codes.

This is something you can try to do if you dont want to go to the part store.
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Old 07-25-2019, 10:18 AM  
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It's P0125

also misfires on cylinders 2&3 apparently, but I think the issue I was originally looking for is rooted in that code up there. I guess my cooling system just won't shut off even if the engine is cool enough? It runs constantly whatever it is, but only since the CEL came on, and it keeps my oil temp really low on the gauge. Today when I shut off the car and then got back in 5min. later the oil had warmed up by sitting there with the warm engine but then when I started up again it cooled back down to sub-optimal

Last edited by stonedogmillionaire; 07-25-2019 at 10:28 AM. Reason: add information
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