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Old 07-02-2012, 03:07 PM   #1
703sti
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Default 2005 Sti engine struggle after 3000

I have a 2005 Sti with a front mount, bov, k&n intake, down pipe, a cat back with, and 118k miles on it. So the problem is after 3k rpm the engine jerks and struggles to climb and this happened after I changed the plugs, plugs are ngk iridium.

This is my first Subie so any help is appreciated, thank you.
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Old 07-02-2012, 03:09 PM   #2
rhino6303
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Chapter/Region: NWIC
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2005 Impreza OBS SRR
05 Legacy GT RBP

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Sorry, but you are in the wrong forum. Try the 2.5l Turbo forum.
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Old 07-02-2012, 05:15 PM   #3
GrundleJuice
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What he said & if it only does it on boost chk plug gap. Off boost and on boost, chk plug wires didn't get swapped. Be mindful if anything you had removed or apart to do the plugs, especially intake related things after the maf sensor
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Old 07-08-2012, 11:06 PM   #4
703sti
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Default

Quote:
Originally Posted by RaceFaceXC
What he said & if it only does it on boost chk plug gap. Off boost and on boost, chk plug wires didn't get swapped. Be mindful if anything you had removed or apart to do the plugs, especially intake related things after the maf sensor
What happens if the mad was disconnected ??
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Old 07-09-2012, 09:43 AM   #5
SubaruTech84
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Default

Is the check engine light on? Your car doesn't have plug wires, its coil on plug. So it's most likely not in that part of the ignition. Does run ok at idle? Possibly cracked a plug installing them? They are a pretty tight squeeze to do on a turbo car. What did you remove to do the plugs??
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Old 07-09-2012, 04:23 PM   #6
GrundleJuice
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Quote:
Originally Posted by 703sti

What happens if the mad was disconnected ??
If the maf (i assume you miss typed) is unplugged the ecu may resort to a "safe" mode and limit rpm/boost to avoid possible damage. Plugging it back in should resolve it. But like we said, you will get better info in the correct forum.
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Old 07-22-2012, 02:07 PM   #7
jwsuba
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2006 sti
3 stage gold prl white

Default had the same deal on my 06 sti

right by the battery where the engine harness plugs in the wires brake inhalf on the plug look at that i will post pic if u cant find

Last edited by jwsuba; 07-22-2012 at 02:51 PM.
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