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Old 08-06-2006, 08:47 PM   #1 (permalink)
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Default jdm d15b problem

just swapped a jdmd15b in my 1995 civic dx...got the rywire harness and everything hooked up.....no c.e.l.s on but when i start the car for the first time when its been sittin for a few hours it idels high around 2500-3000 it calms down quick but the bouce idles for a min or so....what would cause this?? and how do i fix it i checked for vaccum leaks nothing....when i first put the motor in it was fine this just started....what do i do?
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Old 08-06-2006, 11:48 PM   #2 (permalink)
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once it warms up does it idle at 6-700? Are you sure if it is timed right and the idle is also set correct? check the throttle cable.. make sure the throttle plate is closing all the way/ not binding up a lil sumwhere.
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Old 08-06-2006, 11:52 PM   #3 (permalink)
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*#$@ !!!!! my computer sucks. im sorry

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Old 08-19-2006, 07:03 PM   #4 (permalink)
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is there a fast idle thermo valve on the D15B? it's a valve on the under side of the throttle body. if there is one take it off via the 3 bolts, loosen the 2 screws holding on a plate and there should be a plastic part with a brass looking nipple in the middle tighten the plastic part back down as tight as possible. and put it back together and you should be good. but if this is the case it uasually can be identified by the idle bouncing up and down violently before calming down...
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Old 08-19-2006, 07:07 PM   #5 (permalink)
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play with the tps sensor on the back of the throttle body
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Old 08-19-2006, 07:12 PM   #6 (permalink)
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hmm...normally you can't unscrew the TPS but if you manage to be sure to have a multi-meter to get it back to specs.
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Old 08-19-2006, 07:15 PM   #7 (permalink)
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Quote:
Originally Posted by NeonPinHead
hmm...normally you can't unscrew the TPS but if you manage to be sure to have a multi-meter to get it back to specs.
the "rivets" holding the tps on, are only supposed to "fool" u, u can cut a groove in them and unscrew them with a flathead screwdriver...i did it =)
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Old 08-19-2006, 07:21 PM   #8 (permalink)
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yep, that's the "normally" part I welded on some 10mm bolts easier to work with the TB on the IM.
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Old 08-19-2006, 07:26 PM   #9 (permalink)
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Quote:
Originally Posted by NeonPinHead
yep, that's the "normally" part I welded on some 10mm bolts easier to work with the TB on the IM.
good idea
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