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04-03-2009, 01:40 PM | #1 |
Drives: 07 sedan Join Date: Jun 2007
Location: Home
Posts: 108
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Last edited by camelll; 07-03-2010 at 12:45 PM. |
04-03-2009, 01:48 PM | #2 |
Drives: '08 Bayou Blue LB AT Join Date: Oct 2008
Location: West Hills, CA
Posts: 2,517
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Mike,
Compare your plugs to this pdf file from Bosch.
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04-03-2009, 02:03 PM | #3 |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Yes that color is from the additive. The plugs look ok. Are those the stock plugs?
Why are you running additive? If it is to reduce knock, stop running additive and run plugs one heat range colder. Maybe you have a vacuum leak somewhere. |
04-03-2009, 02:09 PM | #4 |
Learn to Relax
Drives: 2007, Meteorite, LB Join Date: Dec 2008
Location: Anaheim, CA
Posts: 2,070
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It's just my opinion. The plugs look oily on the threads. It also looks like it's not burning cleanly. I have no experience with supercharged engines.
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04-03-2009, 02:56 PM | #5 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
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04-06-2009, 11:13 AM | #6 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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Hmm curious... I am looking through the repair manual to see what they say about this particular code, "system too lean", and quite a variety of common causes...
Like you said it only really happens at idle, so my gut feeling is it has something to do with your PCV hoses. I know you are 99% sure that's not it, but that's still a 1% chance that it might be I mean, idle is when you have the strongest vacuum in the manifold, correct? so if there's a leak somewhere, it would thus probably have the biggest effect in this condition, and not while the throttle is opened wider. And, Occam's razor... You messed with the oil catch tank, a problem happened, always look for the simplest explanation first
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
04-07-2009, 10:32 AM | #7 | |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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Quote:
The second time I had to disconnect the lower radiator hose and dropped some coolant. After adding coolant I "burped" the air from the lines... I had to repeat this twice, after which the idle hunting went away. This most recent time I found my coolant reservoir cap slightly open and the tank nearly empty. After topping off the radiator and filling the reservoir half full, all seems well again. Not a "by the book" solution, just my experience, and easy to try. I also tend to get low idle speed and fluctuating ignition timing, etc, every time after disconnecting the battery/resetting ECM. It just seems to take a few normal driving sessions for the system to settle. |
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04-07-2009, 10:43 AM | #8 | |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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Quote:
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04-07-2009, 10:56 AM | #9 |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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04-07-2009, 11:03 AM | #10 |
Lurker supreme!
Drives: old and boosted! Join Date: Nov 2006
Location: Ottawa, ON, Canada
Posts: 792
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This is all good to know. I'll definitely be getting a catch can at some point soon.
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2006 Red Blitzed RS 5-door |
04-08-2009, 09:21 AM | #11 | |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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Doc, if you buy one I totally recommend getting decent heater hose and trashing that shitty clear stuff that seems to come with most kits. I installed mine on Saturday, using one piece of good hose... car seemed ok at first but ran like crap yesterday, the piece of clear hose was all sucked in--replaced it last night and now it runs like a champ! Why do companies do this, make it harder on customers to save a few cents on a length of hose?! grarrr |
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04-08-2009, 09:33 AM | #12 |
Drives: '08 Bayou Blue LB AT Join Date: Oct 2008
Location: West Hills, CA
Posts: 2,517
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My catch can just arrived at my P.O. center. I'll install it this weekend.
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04-08-2009, 11:28 AM | #13 |
Drives: 08 Yaris Sedan Join Date: Oct 2008
Location: California - Bay Area
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Ive always had a slightly lean condition since i installed my weapon r intake. Because of the relocation of the MAf sensor closer to the throttle body. So much that the fuel trim was starting to max out.
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04-08-2009, 11:29 AM | #14 | |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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Quote:
I think the reason dealing with the air in the coolant lines solved my idle control problem is because the ECT is one of the things that tells the ECM to enrich fuel mixture after warmup. An air bubble screws with sensor reading and trouble is intermittant. I'm guessing my low coolant level also caused the similar problem later. Another thought, before you go replacing sensors willy nilly, do you have any way to check their function first? Of course the dealer uses the "intelligent tester" thing, but I don't remember if Autozone or other places can also test such stuff for you |
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04-08-2009, 03:36 PM | #15 |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
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I think they basically do what you did, except they spit on the finger before running it around inside the intake
dayam, $600 I hope it doesn't come to that. Dunno maybe you need some more good luck charms... anyway, you'll figger it |
04-08-2009, 04:35 PM | #16 |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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well hot diggity dawg! good news at last
how the hell did you get a clamp on it down there? did you have to remove the TB? or do you mean you clamped the top end |
04-08-2009, 08:51 PM | #17 |
Drives: '08 Bayou Blue LB AT Join Date: Oct 2008
Location: West Hills, CA
Posts: 2,517
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You should sell your boost gauge to KK and buy a vacuum/boost gauge like I have. You would have seen that your vacuum was off.
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04-08-2009, 09:43 PM | #18 | |
Drives: 2007 Yaris HB Join Date: Apr 2007
Location: my own little world
Posts: 1,256
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Quote:
lol, I got a boost/vac gauge from Garm ages ago Noogs, autometer ES series (same as yours?) looks like most of us went with autometer come install it for me why doncha, take your mind off your fuel injected fever dreams congrats on tracking down that slight hissing camelll! it's interesting because I examined that same hose on my car tonight and found the stock tension clip dealie not tight at all... is it better to use the screw type clamps on vacuum hose? |
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