revs dropping???

viki · 26th May 2008, 21:13

Hya I have just brought an L reg civic and have noticed that when I have anything other than the engine on, ie the lights or the wipers my revs drop til the car almost cuts out, it never does cut out but its a pain in the backside! Is this a common problem and does anyone know how to fix it
cheers viki

ViBe · 26th May 2008, 21:20

hmm.. i've experienced this too, but i dont think its anything to worry about. The ECU controls the revs according to the circumstances, for example they are higher when the engine is cold, and then gradually go down as the engine warms up.

FWH · 26th May 2008, 21:22

Hi Viki,

This forum is for the 2006+ Civic, but you may find someone who will recognise this problem anyway.

Which Civic is it exactly?

cylon2007 · 26th May 2008, 22:14

When you turn on anything electric it puts load on the electrical system so the alternator works harder. This puts an extra load on the engine soeducing the revs slightly. It could be that on your car the tickover is set a bit slow. Raising the tickover may help.

Bungle · 27th May 2008, 14:21

Does the idle speed recover after lights are on, or does the RPM stay too low?
It could indicate a problem with the alternator, but that would also mean your batt runs flat from time to time.
If it stats causing a problem, like the enigine actually cutting out, take it to a garage.

26th May 2008, 21:13	#1 (permalink)
viki Valve Cap Join Date: 26th May 2008 Location: birmingham Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	revs dropping??? Hya I have just brought an L reg civic and have noticed that when I have anything other than the engine on, ie the lights or the wipers my revs drop til the car almost cuts out, it never does cut out but its a pain in the backside! Is this a common problem and does anyone know how to fix it cheers viki

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This thread is about: revs dropping???, it's in Previous Civics at the Honda Civic forum Civinfo; Hya I have just brought an L reg civic and have noticed that when I have anything other than the engine on, ie the lights ...

26th May 2008, 21:20	#2 (permalink)
ViBe Supporter Locking Wheelnut Join Date: 20th May 2008 Location: Göteborg, Sweden Posts: 113 Thanks: 0 Thanked 0 Times in 0 Posts	hmm.. i've experienced this too, but i dont think its anything to worry about. The ECU controls the revs according to the circumstances, for example they are higher when the engine is cold, and then gradually go down as the engine warms up.

26th May 2008, 21:22	#3 (permalink)
FWH Super Moderator Civinfo master Join Date: 3rd June 2007 Location: Sweden Posts: 5,225 Thanks: 6 Thanked 43 Times in 39 Posts	Hi Viki, This forum is for the 2006+ Civic, but you may find someone who will recognise this problem anyway. Which Civic is it exactly?

26th May 2008, 22:14	#4 (permalink)
cylon2007 Triangular Exhaust Join Date: 14th April 2007 Location: South Manchester/North Cheshire Posts: 467 Thanks: 0 Thanked 2 Times in 2 Posts	When you turn on anything electric it puts load on the electrical system so the alternator works harder. This puts an extra load on the engine soeducing the revs slightly. It could be that on your car the tickover is set a bit slow. Raising the tickover may help.

27th May 2008, 14:21	#5 (permalink)
Bungle Rocketship door handle Join Date: 3rd July 2006 Location: SE London/Kent Posts: 1,217 Thanks: 0 Thanked 0 Times in 0 Posts	Does the idle speed recover after lights are on, or does the RPM stay too low? It could indicate a problem with the alternator, but that would also mean your batt runs flat from time to time. If it stats causing a problem, like the enigine actually cutting out, take it to a garage.