Low \ No Evap Purge Flow and Check Engine Light
#1
Low \ No Evap Purge Flow and Check Engine Light
Finally had some time to come back and try and give back to the group.
My 2007 V8 Vantage was throwing a CEL for low or no evap purge control circuit ( dont remember the exact code as I didnt save it ) A common cause of this is to replace the evap pump motor which is located behind the drivers side rear wheel well cover. The part from Aston incudes the entire assembly, pump and a cannister looking thing and is about $300.
For the DIY crowd you can use this Bosch 0261222018, which I believe is a Volvo part., and is an exact replacement, but does not come with the bracket, or the cannister. Now what I discovered in the process is that the canister actually contains an air filter element for the pump. I very carefully popped the top off and mine was actually filled with a bunch of dirt and leaves. I gave it a light brush with soapy water and blew it out. Upon reflection the actual cause of my CEL was very likely restricted flow to the unit because of the dirty filter. Im adding this to a list of once a year or so maintenance items for the car.
Heres a link to the actual pump itself on Amazon should anyone come looking...
Next up, clutch....
Cheers!
My 2007 V8 Vantage was throwing a CEL for low or no evap purge control circuit ( dont remember the exact code as I didnt save it ) A common cause of this is to replace the evap pump motor which is located behind the drivers side rear wheel well cover. The part from Aston incudes the entire assembly, pump and a cannister looking thing and is about $300.
For the DIY crowd you can use this Bosch 0261222018, which I believe is a Volvo part., and is an exact replacement, but does not come with the bracket, or the cannister. Now what I discovered in the process is that the canister actually contains an air filter element for the pump. I very carefully popped the top off and mine was actually filled with a bunch of dirt and leaves. I gave it a light brush with soapy water and blew it out. Upon reflection the actual cause of my CEL was very likely restricted flow to the unit because of the dirty filter. Im adding this to a list of once a year or so maintenance items for the car.
Heres a link to the actual pump itself on Amazon should anyone come looking...
Next up, clutch....
Cheers!
#4
Interesting. I had the same fault on my 2007 DB9. I replaced the purge valve and the problem went away. After replacing it, it came back on. After clearing the codes, it hasn't shown up again, but because of weather, I havent driven it much. I will check the similar canister (if present on DB9) and see if similar issue.
#5
Interesting. I had the same fault on my 2007 DB9. I replaced the purge valve and the problem went away. After replacing it, it came back on. After clearing the codes, it hasn't shown up again, but because of weather, I havent driven it much. I will check the similar canister (if present on DB9) and see if similar issue.
The air filter is in the video at 2:59. The video author identifies it as a charcoal cannister but that is not what it is.
#7
Sharing my recent experience on this. I've had a periodic P0442 with my 2014 Vantage which I assumed was a gas cap issue (I would clear the code and it would not come back for months on end). P0442 been persistent recently and I have an annual state smog test due, so I came back to this thread (having already purchased the Bosch pump (A) mentioned above for ~$50). After manhandling the fender liner I discovered two additional points of interest. First, as shown, the OEM hose (C) connecting the pump (A) to the filter (B) was degraded and in itself may have been the source of the EVAP minor leakage. I took the hose to AutoZone and found a suitable replacement for $2. No luck at hardware stores as their hoses (plumbing applications apparently) were generally too rigid. The proper sized 5/8" ID hose (best to take the unit along to be sure) is a tight fit in any case and a heat gun can ease the fitment along. Second, I was going to clean out the filter as mentioned above but discovered that the filter unit itself (B) was a VW part, 1C0-906-621-A, which I picked up at the local VW dealer for $16. Prying the old filter apart was also more difficult than expected so very happy to discover yet another alternative part. One last thing to mention is the 3 screws that hold the OEM pump (A) to the black metal bracket (screws are on the back of the pump) did not fit the replacement Bosch pump screw holes. Finding a screw to fit was a PITA, and I apologize for not remembering the size, but I believe the new screws were 1/2" fine thread and possibly an 8. Overall a straightforward job and a nice opportunity to look around.
New components in place
Original filter
New components in place
Original filter
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