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VTEC won't kick in

 
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Old 01-20-2015, 07:09 PM
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VTEC won't kick in

HI guys
I'm a recently new owner of a 1991 JDM prelude SiVTEC
H22A engine BB4 chassis
it has about 155000kms/96000miles
engine and car goes great but in the 800kms or so I've driven it only got VTEC to kick in once or twice. I really wanna fix this problem and unleash the full potential of my lude.

Things I've tried
-tested solenoid, clicks with fast response
-VTEC oil pressure switch gets 5V from plug and switch has nil resistance when closed.
-jumpered diagnostic plug, no CEL codes
-changed oil, cleaned solenoid screen
-previous owner was running standard unleaded, I have since changed to premium, though I've driven less than 50kms on the new fuel
-previous owner also changed out a new distributor as it was stalling very often

please help me out here any help is appreciated, please be gentle, I'm new
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Old 01-23-2015, 05:50 PM
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Re: VTEC won't kick in

sweet 91 JDM are probably the rarest year preludes. I had an issue once with my car running sluggish with no vtec and I swapped the distributor to a different one and it ran like new.
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Old 01-24-2015, 05:45 PM
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Re: VTEC won't kick in

thanks, glad you like it I'll probably post some pics up when she's all done up. I don't think the wiring was the best of jobs cause it's very electrically noisy ( tach needle bouches at high rpm, poor radio signal) but the distributor definitely works, and engine is not in limp cause I can rev all the way up to 7.2k. I'm from New Zealand where where we get quite a lot of Jap cars as straight imports cause there's no need to convert.
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Old 01-28-2015, 10:53 AM
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Re: VTEC won't kick in

the bouncy tach needle is 100% signs that there is or will be problems with the distributor.
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jdm, jdm h22 help, jdm h22a, vtec


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