GRAVEDIGGER

recently swapped motor. now when iam driving and let off gas, lights get a little brighter. also when iam back on gas they dim. wtf anyone know what causes this. car is still the same year obd .so i dont think its the ecu. could it be to tight of a alternater belt?

mycivicstoo(s)low

Check your alternator and grounds.

GRAVEDIGGER

grounds are all good. alt looks brand new. swap is usdm with about 30000 miles.i also used a brand new harness and cleaned all grounds etc before install. help someone . this sh-t is annoying

ALLBLINE

That's what you get for not letting me drive your ride

GRAVEDIGGER

bump for more replies

blackhatchy

usually when you let off the gas, the lights get dim, and when you step on the gas the lights get brighter.

Ekay

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackhatchy &raquo;</TD></TR><TR><TD CLASS="quote">usually when you let off the gas, the lights get dim, and when you step on the gas the lights get brighter.
</TD></TR></TABLE>

he obviously put the motor in backwards

built562

other than voltage output from alternator, check the belt tension too. also make sure the bulbs are the correct wattage.

99blackcivicSi

alternator, grounds

Fowler.

My 00 dx did this when I put my gsr in, my 97 cx did the same thing when I put my ITR into that.. it's a pretty common occurance with swapped Eks. I'm not quite sure how to remedy it though...

I wouldn't be so quick to say it's the alternator or the grounds as there have been other people that have run into the same problem..

99blackcivicSi

That is just a starting point to trace the problem you go with the most obvious choice first because 50+% of the time that is what it is.you normally don't touch the auxillary light harness when doing a swap so i might have something to do with the alternatar not charging (fully) not hooking one of the grounds up or having to move a ground and not scraping the paint all the way off of where you put it and therefore not getting a proper ground. just a couple of ideas

GRAVEDIGGER

just cleaned and sanded connecters for the grounds from valve cover,h-lights-tranney. also made sure all grounds including battery were tight. checked all plugs ,connections to alt etc. belt is tight but i dont think overtight.might just be stuck with this i guess.

GRAVEDIGGER

also using all stock bulbs.car does not do this while idling ,only when clutch is disengaged or engaged and car is moving.

99blackcivicSi

hmm did you check realys or anything under the hood see if anyof them might not be getting full power? or if one of shotty that is all i got might be able to think of something else i will get back to you.

ace1875

go to Autozone or whatever you have there and have them test your Alternator and battery to be on the safe side. (just incase)

slammed_93_hatch

seems like belt or battery, you say the alt looks brand new go get it tested

monicle

Ive got the same issue after my b18c into my 2k ive just lived with it as none of the posts on this site about it have come up with an answer.

GRAVEDIGGER

does not do it when heater fan is turned on either.bump for more replys

b20_ed

sorry to hijack the thread, but what does it mean when you brake and the headlights and everything else dim? Then when I get to about almost 3k they are normal. I checked grounds...... And nothing dims when I have my heater blowing full blast???

GRAVEDIGGER

ttt for help

GRAVEDIGGER

ttt for help got new batt,alt was fine ,but what about voltage regulater?

IS3Fifty

well 12V is what your looking for for power. With a new battery and you say the alt. is fine. I assume you got it checked out right? Everything should be fine. As said by someone earlier make sure your grounded properly.

GRAVEDIGGER

all factory locations aND I USED A BRAND NEW OEM HONDA HARENESS