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B18c1 will not go past 4,000 rpms

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Old 04-26-2009, 12:20 PM
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Default B18c1 will not go past 4,000 rpms

Just got done putting in a b18c1 with a p30 ecu and when driving the car it will not go past 4,000 rpms and will not pick any speed, what the hell is wrong?
Old 04-26-2009, 12:30 PM
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Default Re: B18c1 will not go past 4,000 rpms

What codes are you throwing? Sounds like limp mode.
Old 04-26-2009, 02:40 PM
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Default Re: B18c1 will not go past 4,000 rpms

Agreed.

In nearly all cases, this is because your VTEC solenoid is not properly hooked up and/or broken.

Also, you might look at this thread
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/b18c1-not-engaging-vtec-new-solenoid-oil-switch-no-cel-new-harness-2480698/#post37859903

Might have useful info.
Old 04-26-2009, 03:55 PM
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Default Re: B18c1 will not go past 4,000 rpms

samething happened to my buddys jdm h22 it almost hit like a limiter at 4k we switched his ecu to a p28 that was chipped and it solved the problem
Old 04-26-2009, 05:33 PM
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Default Re: B18c1 will not go past 4,000 rpms

Not to sound bad or anything but a friend of a friend was having this same type of problem. After going through many things it was something dumb, he had less than a quart of oil in it. Once he put more oil in, it worked again. You never know...
Old 04-26-2009, 05:35 PM
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Default Re: B18c1 will not go past 4,000 rpms

All good advice. Make sure everything is connected properly and attempt to find a a spare ecu to test
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