Recent Topics
Ground effect
by mjoekingz28
02/13/16 04:36 AM
20w50 thick? i present to you Penrite's 50w70!
by FordCapriDriver
02/13/16 03:46 AM
08 caravan / oil seeping from spark plug
by Mark72
02/12/16 11:25 PM
Holley Accelerator pump probem
by nwjones18
02/12/16 10:56 PM
Sealant for threaded air hose fittings.
by BigD1
02/12/16 10:37 PM
on line data search programs - which is best?
by bmwjohn
02/12/16 10:11 PM
What size air compressor is needed
by ram_man
02/12/16 09:45 PM
DHS wants to force car owners to use OEM parts
by faltic
02/12/16 08:54 PM
Castrol Edge 5w30 no longer A5/B5
by slacktide_bitog
02/12/16 08:20 PM
Best Oil Analysis?
by countryboy9799
02/12/16 07:28 PM
Left my lights on and battery died.
by joegreen
02/12/16 07:25 PM
Honda CRX '91 transmission fluid
by jhmed80
02/12/16 07:18 PM
Newest Members
wdleighton1, RTS, jhmed80, engus, Rob_Pol
56902 Registered Users
Who's Online
19 registered (dmdx86, Char Baby, Ifixyawata, dec219644, bbhero, Andy636, 2 invisible), 465 Guests and 89 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
56902 Members
66 Forums
244628 Topics
3984672 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3211604 - 12/09/13 06:57 PM 2008 Accord I4 low idle/vibration help
Brybo86 Offline


Registered: 10/08/11
Posts: 1751
Loc: Chicago, IL
I thought I fixed my low rev/ vibration issue but obviously not. 2008 Honda Accord 2.4L I4 86kmiles

Scenario:
When the car is warm from driving I get an RPM of about 550-600 which also gives me some not so nice vibrations. This only happens then the car has been completely stopped for at least 2 seconds, Such as stopping at a light. It only happens in gear, D or R, with the brake on, either foot or handbrake it doesn't matter.
I took it to the dealer to have them check the engine and trans mounts. They come back 1 hr later and they say they all look good and they didn't feel any vibes...???

I looked in the service manual for the process to check the front vacuum controlled engine mount. The vacuum from the solenoid is between 20-22 inhg. It also changes to 0 with revs. Solenoid seems to be working fine. The mount holds vacuum well with no drop in vacuum after a few mins.

So according to the service manual when the vacuum line going to the mount is removed from the solenoid (or vacuum is released using my mityvac) the engine should change in idle smoothness. If the vacuum is at 20 when Idle the mount is working and should be smooth. when engine is revved the vacuum is released and the mount functions without vacuum.

So since my car does not change its vibrations with or without vacuum I think the mount is bad and should be replaced.
Dealer did not buy this argument.

Can anyone who has a 2008-2011 I4 check to see if they get increased vibes when the top vacuum hose is removed from the mount solenoid?
It is down and left from the oil dipstick in the pic with three tiny dots next to it, little rubber boot on top. there are 2 hoses coming out towards the front of the car. remove the top one going to the mount and please check if there are and increased vibrations. Thanks again.


If you don't have this car/engine do you have any advice/thoughts?
_________________________
08 Honda Accord EX-L 2.4L RP 0w20 116k
01 Kymco People 50
95 Lexus LS400 M1 AFE 0w30 178k
95 Yamaha Jog
86 Kawasaki 454Ltd Valvoline 20w50 18k

Top
#3211610 - 12/09/13 07:04 PM Re: 2008 Accord I4 low idle/vibration help [Re: Brybo86]
gregk24 Offline


Registered: 04/13/13
Posts: 4219
Loc: FL, USA
I have a 2006 Honda Accord 2.4 and its not the smoothest Ive ever felt, however, it is the smoothest idle of any 4 cylinder Ive felt.
_________________________
2012 Honda Accord EX-L 36K
M1 AFE 0w20 / Fram Ultra

2005 Chevy Uplander 133K
QSD 5w30 / Fram Ultra

1991 Buick Park Avenue 120K
Supertech 5w30 / Fram Ultra

Top
#3211667 - 12/09/13 08:10 PM Re: 2008 Accord I4 low idle/vibration help [Re: Brybo86]
Tosh Offline


Registered: 05/12/05
Posts: 2617
Loc: Silicon Valley
Seems like you are diagnosing it correctly according to the FSM. Odd that the stealer isn't agreeing and jumping at the chance for some warranty work...

Top