Meatman wrote in
379fd23ee0bd.TakeThisOut@d15g2000yqg.googlegroups.com:
> Condition: CAR OFF after up to temp. Any weather as I recall.
> -
> In the quiet of the night (and you aren't suspecting it) it made me
> think a motorcycle was accelerating in the far
> distance...brrrrRRRRRRrrrrrrrrrrrr......... tapers down and done.
> -
> Year or so ago, it seemed random to me. Definitely not persistent.
> LAST NIGHT after -key off- I sat in the car for about an hour on the
> phone. Same symptom audible inside car time-after-time-after-time at
> same interval +/-. About every 40secs. for AT LEAST AN HOUR!
Semi-normal. EVAP tests run even after shutdown.
> -
> -AND YES I have a DTC: P1456 + P0420. 'guessing' that the P0420 was
> caused by the 1456 (?)
No. They are totally unrelated.
> -
> -AND YES I've had the fuel vapour/smell issue for about 6-months (only
> noticeable sitting at idle, of course). No ongoing overnight fuel
> odor/leaks.
Where do you live? If anywhere that has snow in winter, you probably have
corrosion on certain parts of the EVAP system, specifically the electrical
control-solenoids.
Honda, for some bizarre reson, installed the highly-complex and extremely-
sensitive EVAP system under the car, at the rear, just where moisture and
salt buildup are the worst.
I have compiled a list of Honda EVAP diagnostics documents, here:
<http://www.tegger.com/hondafaq/misc/evap-diag/>
If you feel like taking a shot in the dark, you can replace the gas cap
with a new Honda one (NOT aftermarket!). This usually does not fix a P1456,
but people seem to want to try that first.
--
Tegger
>> Stay informed about: 98 Accord V6...EVAP noise (L. rear) ongoing/persistent now.. 
FAQ
Search
Profile
Private Messages
Log in
