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vtec_me · 09-29-2008, 06:30 PM

I just picked up a eg hatch, and found out that when ever i turn on the headlight my idle surges, but when its off it does not do it. does anyone know whats up? could it be poor ground or battery?

Justin66 · 09-29-2008, 08:16 PM

Maybe give that a check. Your Idle Air Control Valve (IACV) might not be working right. Does this happen when you turn on anything else (defogger, A/C) ?

EGDriver93 · 10-02-2008, 03:23 PM

A grounding kit took care of my surges. Also try cleaning out your throttle body. Helps a bit. Prob your IACV though.

George777 · 10-02-2008, 03:27 PM

One of your wires could be exposed too, so when you turn the lights on it reacts with something else or grounds out. It wouldn't hurt to trace the wires and make sure there aren't any exposed parts.

JdMsoles · 10-03-2008, 01:34 AM

i would just check the battery if its below 12.4 volts then your going to have problems where things start acting up like that just check that first before doing anything else and make sure ground to battery is clean of rust or anything i don't think its the iacv, should be around 4.5v no more .5volts GL!

fijitec · 10-03-2008, 12:41 PM

is this problem solved..?

vtec_me · 10-25-2008, 09:04 AM

no not solved yet still doing this i havent checked my iac valve yet, but when its cold it surges pretty bad too drops almost to 400-300 and goes back to 1100 last time i check battery was at 11.8 ill clean off my grounds and see waht happens

eg'sforlife · 10-25-2008, 09:18 AM

it still sounds like a grounding problem like your lights are grounding off something i had this problem once and my grounding wire for my light was corroded but its looked fine just looking

prpprimo · 10-25-2008, 12:08 PM

Check the output voltage from your alternator. It should be around 13.5 to 14.3 volts. (you should be able to do this with a basic multi meter or bring it to a local auto parts store that offers free diagnosis)The symptom your describing sounds like a charging issue. Most all components are designed to run off a full 12 volts. If it falls below that, it can affect the engine idle circuit.

It is similar to jump starting another car that has a dead/weak battery. Once the cables are connected, you will notice the engine in the car delivering the charge decrease RPM's to compensate the load.

phyregod · 10-25-2008, 01:58 PM

^^ That would be my first guess. Weak alternator. Next would be the ground thing.

09-29-2008, 06:30 PM	#1
vtec_me Junior Member Join Date: Jun 2008 Location: arkansas Posts: 28 iTrader: 0 / 0% Rep Power: 0	idle surges when headlights on??? I just picked up a eg hatch, and found out that when ever i turn on the headlight my idle surges, but when its off it does not do it. does anyone know whats up? could it be poor ground or battery?

09-29-2008, 08:16 PM	#2
Justin66 The Hondaswap Canadian Join Date: Dec 2007 Location: Peterborough, Ontario Age: 22 Posts: 986 iTrader: 0 / 0% Ride: 1990 Intergra GS/XSi Rep Power: 27	Maybe give that a check. Your Idle Air Control Valve (IACV) might not be working right. Does this happen when you turn on anything else (defogger, A/C) ? __________________ 90 Integra GS/ XSi - JDM B16A SiR2 w/ full exhaust & short ram - J1 Tranny - Skunk2 stage 1 cams & gears (not installed yet) - H & R lowering springs - Rear strut bar and front camber kit - HKS Hi-Power exhaust - Powersteering removed - JDM 1-piece headlights & sidemarkers - Optima RedT relocated to rear XBOX LIVE: JustinE66

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10-02-2008, 03:23 PM	#3
EGDriver93 Junior Member Join Date: Sep 2008 Posts: 15 iTrader: 0 / 0% Rep Power: 0	A grounding kit took care of my surges. Also try cleaning out your throttle body. Helps a bit. Prob your IACV though.

10-03-2008, 01:34 AM	#5
JdMsoles Junior Member Join Date: Jan 2008 Posts: 8 iTrader: 0 / 0% Rep Power: 0	i would just check the battery if its below 12.4 volts then your going to have problems where things start acting up like that just check that first before doing anything else and make sure ground to battery is clean of rust or anything i don't think its the iacv, should be around 4.5v no more .5volts GL!

10-03-2008, 12:41 PM	#6
fijitec Junior Member Join Date: Jan 2007 Posts: 24 iTrader: 0 / 0% Rep Power: 0	is this problem solved..?

10-25-2008, 09:04 AM	#7
vtec_me Junior Member Join Date: Jun 2008 Location: arkansas Posts: 28 iTrader: 0 / 0% Rep Power: 0	no not solved yet still doing this i havent checked my iac valve yet, but when its cold it surges pretty bad too drops almost to 400-300 and goes back to 1100 last time i check battery was at 11.8 ill clean off my grounds and see waht happens

10-25-2008, 09:18 AM	#8
eg'sforlife Member Join Date: Oct 2008 Location: Mooresville, NC Age: 18 Posts: 61 iTrader: 0 / 0% Ride: 92 Civic LX Rep Power: 1	it still sounds like a grounding problem like your lights are grounding off something i had this problem once and my grounding wire for my light was corroded but its looked fine just looking

10-25-2008, 12:08 PM	#9
prpprimo Hondaholic Join Date: Jun 2008 Location: ABQ Posts: 142 iTrader: 0 / 0% Ride: 91 hatch z6/ 98 coupe z7 Rep Power: 2	Check the output voltage from your alternator. It should be around 13.5 to 14.3 volts. (you should be able to do this with a basic multi meter or bring it to a local auto parts store that offers free diagnosis)The symptom your describing sounds like a charging issue. Most all components are designed to run off a full 12 volts. If it falls below that, it can affect the engine idle circuit. It is similar to jump starting another car that has a dead/weak battery. Once the cables are connected, you will notice the engine in the car delivering the charge decrease RPM's to compensate the load.

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idle surges when headlights on???