AVCS Timing over advanced - Both banks P0021 and P0011
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AVCS Timing over advanced - Both banks P0021 and P0011
I've recently bought an '08 Impreza, 1.5 L non-turbo (Japanese Anesis model).
Took out the air filter and found it black as night, so changed it out. To get it back in I had to unplug the MAF electric jack and undo the hose clip for the intake line. Put it back in and then got the engine light after a couple drive cycles.
Undid the battery and the code went, but drove off and car stalled on me, read another forum which told I should let it idle for ten minutes after taking out the battery. Took out the battery and then put it back in, let it idle...
Now the engine light comes back. Read the code and it shows both P0021 and P0011. The oil was pretty bad so I changed oil and filter and cleared the code. After about 5 drive cycles the light is on again.
Any thoughts?
Thanks very much.
Took out the air filter and found it black as night, so changed it out. To get it back in I had to unplug the MAF electric jack and undo the hose clip for the intake line. Put it back in and then got the engine light after a couple drive cycles.
Undid the battery and the code went, but drove off and car stalled on me, read another forum which told I should let it idle for ten minutes after taking out the battery. Took out the battery and then put it back in, let it idle...
Now the engine light comes back. Read the code and it shows both P0021 and P0011. The oil was pretty bad so I changed oil and filter and cleared the code. After about 5 drive cycles the light is on again.
Any thoughts?
Thanks very much.
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Oil condition
Oil was pretty bad, could see some sludge on the dipstick when I pulled it, the filter was dirty as fk..
I put it Total 10w-30 5k oil in it yesterday..
I put it Total 10w-30 5k oil in it yesterday..
#4
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Prob find that the AVCS screen filters in the banjo bolts ( oil feed pipes to AVCS solenoids) are bunged up with sludge and tarnish if the engine oil was that bad.
Worse case scenario would be the AVCS pulley's sludged up internally but these can be stripped and cleaned too.
Mick
Worse case scenario would be the AVCS pulley's sludged up internally but these can be stripped and cleaned too.
Mick
Last edited by merlin24; 19 March 2016 at 10:32 PM.
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No filter in AVCS Banjo bolt
Seems there is no filter in the banjo bolt in front the solenoid.. Lots of gunk in there tho... I checked to see whether the filter had fallen inside the solenoid area but nothing in there either...
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#8
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The solenoids are possibly sticking............. you may need to take them apart and clean, along with the camshaft actuators (need to check for dirt stopping them moving)
http://opposedforces.com/parts/impre...llustration_1/
http://opposedforces.com/parts/impre...llustration_1/
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Solenoids cleaned up, seemed to be moving freely. Guessing the only option now is to clean up the cam sprocket?
What i find weird is that it's throwing both codes at the same time. Coincidence they both become plugged?
What i find weird is that it's throwing both codes at the same time. Coincidence they both become plugged?
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Reckon if the neutral position switch was faulty it would throw a code for that? Anyone with any advice on how to remove and clean the cam sprockets?
#12
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This thread should give you some idea re: cleaning
http://forums.nasioc.com/forums/show....php?t=2441411
this maybe useful as well
http://legacygt.com/forums/showthrea...s-191330.html?
http://forums.nasioc.com/forums/show....php?t=2441411
this maybe useful as well
http://legacygt.com/forums/showthrea...s-191330.html?
Last edited by Don Clark; 25 March 2016 at 06:28 PM.
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Best of luck
Gary
#17
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No it doesn't, it's an on off switch. On when in gear (avcs active), off when in neutral (avcs inactive). I know it sounds like a long shot because it is but if cleaning the pulleys doesn't fix it I would look there. The simplest way to rule it out is by unplugging it and make a loop with a piece of wire to fool the car into thinking it's in gear. Or just download free SSM and cable £5 off eBay and you can monitor it along with just about every other parameters on the car.
Best of luck
Gary
Best of luck
Gary
some years are on in gear, others were off in gear, around 05/06 it changed iirc.
hth
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