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Old August 5th, 2018, 01:39 AM   #1 (permalink)
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Power loss when shifting in gear.

Hello y'all recent I bought a 2006 eclipse gs and whenever I full throttle the car and I shift hard and fast from 2nd to 3rd gear at 6k rpm or 6500k rpm my car power loss or bogged down rpm drop to 4000k rpm and would slowly picking back up to speed. Anyone have this issues please help me out??. No cel or anything. I was thinking it could be the slave cylinder or my mass air flow sensor but not sure.
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Old August 6th, 2018, 01:07 AM   #2 (permalink)
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3rd in mine is kind of long, acceleration kind of degrades at about 70. I don't pay attention to RPMs really. I'll have to see if that's "normal". I'll log some runs and get back to you.
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Old August 6th, 2018, 07:32 AM   #3 (permalink)
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You don't make much power, and are falling out of the powerband. Fix your exhaust issues
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Old August 6th, 2018, 04:44 PM   #4 (permalink)
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Getting a reflash might help with that powerband issue
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Old August 7th, 2018, 12:14 PM   #5 (permalink)
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Originally Posted by Orion3003 View Post
Getting a reflash might help with that powerband issue
He has his O2 sensors wrong, so he's running with super wrong air fuel ratios on half his cylinders. Not sure why he says no check engine light in this thread where in the DNA Motoring header PSA he talks about his codes.
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Old August 19th, 2018, 05:13 PM   #6 (permalink)
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AFR

or Timing

or slipping clutch disc.

My disc clutch got tranny fluid on it when my seal broke and I only noticed in the upper range and all i felt was a lot less acceleration than usual. No smells or smoke.
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Old December 9th, 2019, 04:19 PM   #7 (permalink)
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So I've been having a similar problem with my 06 eclipse gs in 3rd gear about 4k rpm it will start to loss power and evenly stall out if left in 3rd shifting to 2nd seems to still maintain a steady chug then goes away....shifting from 3rd to 4th under 4k doesn't cause a chug...only mod on the car atm is an intake just rebuilt exhaust from header back but those are oem parts nothing special...no idea where to start on this issue?
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Old April 15th, 2020, 10:52 PM   #8 (permalink)
140whp+15.72%= 162hp
 
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Can I call it "The Sweet Spot"? OP shifts from 6,000-6,500rpms and next gear is at 4,000rpms meaning Mivec is still active. I think my GS does the same but it doesnt lose power it climbs as it should... now if he's 3rd gear comes at 5,000rpms and drops to 4,000rpms before climbing then i dnt know what's going on.
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Old April 16th, 2020, 08:20 AM   #9 (permalink)
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The guy was ignoring a known problem that will cause power reduction, and also has parts known to shift the powerband higher. With his mods, about 7400rpm was the sweet spot for me to run a 15.3 NA. He didn't want to fix the issue he had, he wanted to shift the blame to something that wouldn't require welding, eg, changing a part, except for his exhaust manifold, which was the source of the issue (the problem started when he put the new exhaust manifold on)

Problem is, his O2 sensors were still only on cylinders 2 and 4, so he measured the same exhaust twice to calculate his air fuel ratios for both, which is known to cause the car to run wrong, and he was falling out of powerband before coming back into it due to not having enough RPM.
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Old April 20th, 2020, 12:32 AM   #10 (permalink)
140whp+15.72%= 162hp
 
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So he knows what his problem is but doesnt want to tackle it properly? 🤔🤔 I thought most ppl come here because they dont know what is the problem they're facing to fix it. Best of luck to him anyways...
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Old April 20th, 2020, 09:11 AM   #11 (permalink)
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Not always. Some come here looking for easy answers. Eg, people who have low oil pressure don't want to hear that it's not always the $15 sensor. People with idle issues would rather change MAF sensor than look for vacuum leaks. People also really hate hearing that an answer involves welding, or anything beyond their skill level when they cheaped out and bought bad parts
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Old April 24th, 2020, 12:27 AM   #12 (permalink)
140whp+15.72%= 162hp
 
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They were 480$ but i prefer the simplicity of RRE Headers. I avoided the other brands for reasons like welding and stuff. While welding isnt beyond me. I just dont have the creativity. I would had never guessed to drill a hole for a O2 sensor on DNA headers.
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