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bad gas mileage, cant rev past 6k rpms.No check engine light

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Old Jul 29, 2003 | 01:53 PM
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Default bad gas mileage, cant rev past 6k rpms.No check engine light

Can anyone give me ideas on what would be wrong with my car. I already checked all the fluid levels, changed oil and had compression check done. Everything turned out fine. I'm thinking it might have something to do with the i-vtec solenoid. Does anyone know where I can find it and the lines for it. Any help would be appreciated thanks.
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Old Jul 29, 2003 | 01:58 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (k20em2)

By your username I'm assuming K20A in a 03 Civic Si?

You have to have codes if you cannot rev past 6.
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Old Jul 29, 2003 | 02:19 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (poison)

Its a k20a2 in a 2001 civic coupe. Noe there is no check engine light. I already had them check for any codes. I did have a p1166. My a/f sensor(first plug on the cat) was not connected since there was no female plug to plug it into. I had to spilce into the a/f aensor and connect it to the ecu. That took of the check engine light, but I'm still having problems. I 100% sure I wired it properly. Could the wires I used be the problem? I used 18 guage copper wires from radio shack. Any else with some ideas?
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Old Jul 29, 2003 | 02:25 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (k20em2)

Welcome to my world, but with a constant CEL
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Old Jul 29, 2003 | 02:30 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (k20em2)

Oh ****, EM2 = coupe Si = EP3 my bad.

Sounds like a wiring problem.
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Old Jul 29, 2003 | 02:43 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (poison)

I'm pretty sure the wiring is good. I had it sent to hasport to get it done. Is there any trouble shooting guides I can look into about this problem?
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Old Jul 29, 2003 | 02:48 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (k20em2)

Well, if the motor is not operating properly, then there has to be a CEL, unless your MAP or TPS is not set properly.

Check the TPS to be set at .5v at idle, and 4.5v at WOT.
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Old Jul 29, 2003 | 03:00 PM
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Default Re: bad gas mileage, cant rev past 6k rpms.No check engine light (poison)

Ok, I'm not very good mechanically. What TPS and how can I check it out? Thanks for the quick replies.
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Old Jul 29, 2003 | 04:14 PM
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Default

I know tps is throttle position sensor. use a multimeter to check, it has three wire's and is located on the throttle body.
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Old Jul 29, 2003 | 05:23 PM
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Default Re: (Sleepy03)

ok, Do I just stick the multimeter at the end of the terminal?
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Old Jul 29, 2003 | 05:36 PM
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Default Re: (k20em2)

take it back to where you got your work done
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Old Jul 29, 2003 | 07:15 PM
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Default Re: (EVIL BALL BAG)

obviously it sounds like its running too rich. does it stutter or hesistant when you get on it and when it revs??? is your bumper black? do you have a cat? can you smell gas/exhaust???? i had similar problems on my b18b, it ended up being a shitty ecu.... i hope its just a loose wire or something
Good luck!
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