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Old 09-26-2013, 08:21 AM   #1
Sully313
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03 SVT down on power... sometimes.

This is the second time in 2 weeks it happened. It feels like its only running at 60% power.

The first time it happened I left for work in the AM and it just felt really slow. This was the day after an autocross where i hit the rev limiter about 8 times per run so I thought I hurt something. I went to lunch the same day and it was fine and has been ever since.

This morning it did it again.

First thing that came to mind was a clogged cat but I don't believe a clogged cat would cause a intermittent loss of power.

Everything tune up related from coil to plugs and fuel to air filter has been in the last 6k miles or so.

So.. has anyone else expereince this with their SVTF? I'm currently in Kansas City for work so I don't have any tool besides a basic tool kit, jack and jack stands so its difficult to do any diagnostic work. So, any help would be appreciated.


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Old 09-26-2013, 12:19 PM   #2
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You say this only happens in the AM when the car is cold.... Do you warm it up before you start driving? The SVT does not like the cold, runs like crap and has high revs when its not warmed up long enough. I would suggest letting it warm up for like 8-10 min before you start driving and see if that helps. I try to let mine warm up for at least 5 min but when it starts to get colder outside il let it warm up for 10 min, otherwise she runs like crap for a couple miles. If you have the cold weather package and its super cold out you can plug in your engine block heater to help warm it up faster. So like I said, try to warm it up good before you start driving and see if it helps.
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Old 09-26-2013, 12:20 PM   #3
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I have a 2003 svt and mine gets to be very sluggish, bought new plugs wires and coil. But other times it will put you back in your seat. Im glad someone else has this problem lol
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Old 09-26-2013, 02:39 PM   #4
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I recently moved into an apartment now and its too loud to let it warm up without pissing off neighbors. It was 60ish this morning. My garage is usually about 75-80. Next time i'll try shutting it off and restarting next time it does it. It may just be the nature of the beast.

My car never really threw me back in the seat. :)
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Old 09-26-2013, 03:47 PM   #5
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lol well i guess i should say throw me out of my seat haha.
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Old 09-26-2013, 10:29 PM   #6
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Quote:
Originally Posted by Sully313 View Post
I recently moved into an apartment now and its too loud to let it warm up without pissing off neighbors. It was 60ish this morning. My garage is usually about 75-80. Next time i'll try shutting it off and restarting next time it does it. It may just be the nature of the beast.

My car never really threw me back in the seat. :)
That sux, im almost sure its prob just cuz ur car is cold. When you start driving with it cold just go real easy on it until it warms up to normal temp. Do you have cold weather package? Try using the block heater if u do, that might help and it wont make any noise.
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Old 09-27-2013, 08:51 AM   #7
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This sounds remarkably similar to the issues I was experiencing when my cam positioning sensor went bad. >Here< is the thread I made about it if you're interested.
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Old 09-27-2013, 08:00 PM   #8
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^^^Wouldnt that throw the CEL? Is your CEL illuminated? Good guess on the cam pos sen. Will deff cause the slugishness and lack of power but wouldent it be all the time and not just when the car is cold?
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Old 09-27-2013, 08:29 PM   #9
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^^^Wouldnt that throw the CEL? Is your CEL illuminated? Good guess on the cam pos sen. Will deff cause the slugishness and lack of power but wouldent it be all the time and not just when the car is cold?
Mine only threw a CEL after about 2-3 weeks of having those issues intermittently. It also only had those issues when the car was cold. If I got it up to operating temp without having a problem it would run perfect until the engine got cold again. Sometimes it happened 3-4 times in a row and then didn't happen the next 5 or 6.
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Old 09-27-2013, 09:24 PM   #10
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Quote:
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This sounds remarkably similar to the issues I was experiencing when my cam positioning sensor went bad. >Here< is the thread I made about it if you're interested.
Yeah, the symptoms all sound similar. Down to the ones that I just associated to an SVT and never though it was in issue. Especially lacking low end power when it does run right and a bit of a rough idle on start up. I haven't had a check engine light for p1383..... yet.

I may replace it anyway since its cheap.
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