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Old 10-04-2003, 07:48 AM   #126
richeich
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A good, general rule of thumb is- if you've been under the hood of the car, and something changes immediately after that (rough idle, CEL, etc.), go back under the hood and check for any hoses or vacuum lines you may have knocked loose. That's usually it. Don't forget all the small ones, too.

good luck-
Rich
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Old 10-04-2003, 11:50 AM   #127
sayonara
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So anybody know what/where the tumble generator valve is so I can go check?
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Old 10-04-2003, 11:58 AM   #128
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The TGV's are located on the rear of the intake manifold. There are two, one on each side, they are black and have electrical connectors going to them. It's possible that if you were working in that area the connector got knocked loose.
Find the TGV on the left/driver side since that is the one setting the code, see if the connector is still attached, even if it is disconnect it and plug it back in.
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Old 10-08-2003, 05:31 PM   #129
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the other day i went to fill up my tank when to my dismay i found that my gas cap was missing. i got a new one at a junkyard, but what bothers me is that it didnt throw any CEL's during the whole thing, could something be wrong?
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Old 10-12-2003, 02:20 AM   #130
subbytech
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Default cel's

i dont understand why everybody says "my car threw a cel last week", your check engine light comes on for a reason, whether it be bad gas or bad cats , subaru's are some of the very best in there engineering, so please dont make them sound like there a peice of **** , cause there not , you know it cause you own one, whether it be 15 yrs old or brand new
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Old 10-12-2003, 02:47 AM   #131
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Default check engine

why does everybody that there cars to autozone?
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Old 10-14-2003, 09:46 AM   #132
grindMARC
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Code: Misfires in 1,2,3,4 (Cleared them and they came up again the next day)
Year/Make/Model: 02 WRX
Mileage: 40k
Fix for problem: Switched out plugs to Vpower NGKs (cheapies), changed fuel filter, as per prior post cleaned sensor inside airbox with q-tip + alcohol (but there wasn't any noticable dirt on it), flushed and changed coolant. I'm not exactly sure which thing or combo of things fixed my problem. I'll put my money on the plugs though.

Aside from drop in K&N filter, no tranny or engine mods.

So far 9 days and no CEL
(knock on wood)


Edit: CEL came back on this morning. I think I made it 3 weeks.

Last edited by grindMARC; 10-28-2003 at 01:21 PM.
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Old 10-14-2003, 11:57 AM   #133
bertiescar
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Default Subes DO seem to have a CEL problem

In response to SubbyTech, of course we love our subarus, otherwise we wouldn't be here. However, we're here because the repeate CEL throws befuddle us. They should not be happening as often as they do. And if as you say the CELS indicate a problem that needs to be fixed, wouldn't that indicate that yes, the subes indeed have some troubles that are affecting their engines. It doesn't mean they're junk, it just means there's an issue for some of them. And I believe that's what this thread is about.

It's extremely frustrating when you can't come up with any good reason why your CEL goes off and the computer says there is nothing wrong. As you say, there is something wrong, and as we get these CELs fairly often, the computer is not helping us figure out where that problem is.

Not all of us have great techs to work on our cars.
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Old 11-09-2003, 07:25 PM   #134
rsylvia
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Default P0301 thru P0304 cylinders 1 thru 4 misfire detected

Code: P0301, P0302, P0303, P0304
Cylinder misfire detected on all cylinders!
Vehicle:1997/Subaru Impreza/Outback Sport
Mileage: 88,000
Fix: Autozone downloaded codes for free. I was waiting for the weekend to put new plugs and wire in, to start there. The next day my harmonic balancer "lower belt pulley attached to the crank" came loose and threw my belts stopping me dead in my tracks on the side of a dark rainy road. Inspecting with a flashlight I found the pulley loose and I removed the bolt by hand. The bore in the "cast iron" pulley was wiped out by the drift key in the shaft. Luckily the shaft and key were fine. I returned the next day with a new pulley, belts and lock-tite and drove away at a cost of $120 in parts! Later, I disconnected the negative battery cable and discharged the system to reset the code and everything has been fine since.
History: I just bought the car from a used car lot three months earlier. The dealer had just changed the timing belt, apperently he did not use lock-tite and I'm willing to bet he didn't torque the bolt either.
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Old 11-29-2003, 12:55 AM   #135
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Quote:
Originally posted by matt in fl
It should be fine as long as the light doesn't blink. You can take it to Autozone for a free scan, but don't have them reset it. That way you can find out what the code is.
Whats wrong with the blinking cel?

I get one on the highway sometimes...


-justin
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Old 11-29-2003, 07:15 PM   #136
Mulder
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A flashing CEL indicates a misfire being detected in real time, unlike a steady CEL which indicates a malfunction has been detected at some point in the past and a code stored.
If your CEL is flashing often you should have it checked ASAP and repaired as needed. There may be a problem with the ignition system (plugs, coils, wires) which left uncorrected can eventually cause other problems such as damage to the catalytic converter from unburned fuel.
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Old 11-30-2003, 01:16 PM   #137
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Quote:
Originally posted by mulder
A flashing CEL indicates a misfire being detected in real time, unlike a steady CEL which indicates a malfunction has been detected at some point in the past and a code stored.
If your CEL is flashing often you should have it checked ASAP and repaired as needed. There may be a problem with the ignition system (plugs, coils, wires) which left uncorrected can eventually cause other problems such as damage to the catalytic converter from unburned fuel.
well i dont have cats... i just got new plugs and wires and that didnt fix my flashing cel. although, with the new 'decat pipe', it hasnt happened but once. when it does i let my car coast down the freeway.
I talked to my local dealer about it and they thought it might have been the proecm, but i got rid of that a few months ago.

I also heard that a lightweight flywheel causes ghost misfire codes.

-justin
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Old 11-30-2003, 05:37 PM   #138
anechoic
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Default P1505

OK, the car in question is a 2000 Legacy L wagon, 5MT, stock aside from an aftermarket CD player and a Primitive front skidplate (which shouldn't matter here...), with around 75,000 miles. A couple of days ago, I started it up and the engine was running really rough, CEL was on. Went out to get gas, restarted it - same deal, except now the CEL is flashing. Popped the hood and saw obvious arcing around the #1 ignition coil terminal. So I take to the car to a dealership, who replaces the ignition coil, and all appears to be well. Today, I got another CEL, and the engine kind of lurches occasionally (not as bad as before, though). I went to autozone to have the code pulled, but I can't find a description for P1505 anywhere. One of the plug wires (the one on the arcing terminal) looks a little sketchy, but the replacements won't be in for a few days.

Anybody seen this one before?
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Old 12-02-2003, 10:14 PM   #139
0020L
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I have a 2000 Legacy Brighton with 84k miles, and my car just gave out a P1505. The guy at Autozone looked it up for me, and got a description of, "Idle Air Control System at Adaptive Clip." This was as indecipherable to the Autozone counter guy as it is to me. Can somebody detail out this problem for me? I'm strictly newb-level here, unless we're talking aircooled VW maintenance, so anything you've got would be helpful and appreciated.

TIA
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Old 12-02-2003, 11:19 PM   #140
Mulder
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002, my guess on that one is that the ECU has maxed out its ability to adjust idle via the idle control motor. This may indicate a problem with the idle control unit itself, or an engine problem causing an unusually high or low idle that is out of the ECU's range to properly compensate and adjust for.
There are many things that might cause this type of condition, I'd recommend having a competent shop do some troubleshooting.
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Old 12-05-2003, 01:13 PM   #141
anechoic
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Quote:
Originally posted by 0020L
I have a 2000 Legacy Brighton with 84k miles, and my car just gave out a P1505. The guy at Autozone looked it up for me, and got a description of, "Idle Air Control System at Adaptive Clip." This was as indecipherable to the Autozone counter guy as it is to me. Can somebody detail out this problem for me? I'm strictly newb-level here, unless we're talking aircooled VW maintenance, so anything you've got would be helpful and appreciated.

TIA
Ah, now this sounds similar to my issue. I couldn't remember the code description I got from the Autozone guy (as it made no sense at the time), but it does turn up in some generic lists of OBD-II codes. However, for certain makes, it might mean something else (BMW seem to be one that I recall). Anyway, here's might stab at interpreting this one: in the electrical/electronic world, "clipping" refers to an overload or overrange condition. There's a point at which increasing the signal past a certain level produces no further change in output. Essentially, one of the sensors is getting a reading that's off the scale. Now, in my case, I had a cylinder that was firing intermittantly due to a bad ignition coil/plug wire. Presumably, the occasional cylinder worth of unburned fuel/air getting dumped out of the engine was causing the errant sensor readings. As to how the "Idle Air Control System" actually works, I'm still a little fuzzy.
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Old 12-22-2003, 11:08 PM   #142
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Quote:
Originally posted by grindMARC
Code: Misfires in 1,2,3,4 (Cleared them and they came up again the next day)
Year/Make/Model: 02 WRX
Mileage: 40k
Fix for problem: Switched out plugs to Vpower NGKs (cheapies), changed fuel filter, as per prior post cleaned sensor inside airbox with q-tip + alcohol (but there wasn't any noticable dirt on it), flushed and changed coolant. I'm not exactly sure which thing or combo of things fixed my problem. I'll put my money on the plugs though.

Aside from drop in K&N filter, no tranny or engine mods.

So far 9 days and no CEL
(knock on wood)


Edit: CEL came back on this morning. I think I made it 3 weeks.
Exact same problem at about 41k. Missfire 1-4, rough idle. Brought it to the dealer about a week ago. They sent the ECU in to reflash it but that didn't work. No power mods. Still at the dealers. They still can't figure out what is wrong. Luckily I have an extended warranty.
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Old 12-26-2003, 01:41 PM   #143
m98cox
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Default CEL on 2003 Legacy Wagon

On way to work last Friday, CEL came on. From reading some past post, refueled car and made sure gas cap on tight. Drove for a week and still on. Took to dealer this morning. Had a code P0442, EVAP System Leak. Mechanic thinks was from loose fuel cap, explained to him that it was tight and I had refueled. He said sometimes the code will not clear itself. He went ahead and performed a pressure test.
From report (for you guru's and engineers):
Checked code had code P0442 Evap System small leak. Checked freeze frame data - Fule system for bank 1 OP-DRV-CON, calculated load value 6.3%, coolant temp 183, short term fuel trim 0.0%, long term -7.8%, manifold absolute pressure 3.0 PSIG, engine speed 2425, vehicle speed 62MPH. Checked evap system with Subaru pressure tester and smoker. Tehre was no leaks detected at this time, cleared codes and test drove vehicle. OK at this time. - Under warranty, no cost to customer. Took 3 hours.
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Old 01-02-2004, 01:31 PM   #144
Charlie-III
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Car: 1999 Impreza L wagon
Mods: only suspension
Miles:~48K
Code:P0463-Fuel Sensor High Input.

I was driving my wifes car and we were VERY low on gas. The CEL came on but the car ran OK.

I "cleared" it by cycling the ignition on/off 3 times. I pulled the code when I got home (glad I have a code reader) and it is the P0463.

Could it be just I was low on gas, or is it the precursor to another issue?
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Old 01-02-2004, 03:19 PM   #145
rupertberr
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Quote:
Originally posted by rupertberr
Exact same problem at about 41k. Missfire 1-4, rough idle. Brought it to the dealer about a week ago. They sent the ECU in to reflash it but that didn't work. No power mods. Still at the dealers. They still can't figure out what is wrong. Luckily I have an extended warranty.
Turns out it was a bad fuel injector. Valves also needed adjusting. Covered under my extended warranty. Took just over a week to diagnose and fix.
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Old 01-15-2004, 12:51 PM   #146
EmilyS
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2002 Outback
no mods/ standard transmission
60k miles
codes: ??? but dealer always says they relate to O2 sensor

I've had persistent problems with the CEL coming on since I bought my Subie. The dealer has replaced the O2sensor and/or the CEL sensor at least 4 times (sorry, I'm a girl! I'm not sure what exactly he's replacing...) and has also sent the computer back to the mothership for reprogramming.

He keeps telling me there's no problem with my car, it's just a Suburaru problem with the quality of the sensors/CELs themselves. He's done all this work under the original Subie warranty, or the part's 1 year warranty. So other than the incredible annoyance, it's not costing me anything

He just put in a new one weeks ago and the CEL has just come on again (yes, I am tightening the gascap and not overfilling the tank...)

There must be some other problem with my car, though!

What???
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Old 01-15-2004, 06:59 PM   #147
Mulder
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It would be a good idea to get the car scanned somewhere else so you can find out exactly what codes are being set and post them here. That way we can give you a better idea of what the problem might actually be. If you're located in any state other than CA, you can go to an Autozone and they will scan it for free. In CA they don't do it any more.
Also you can post in the forum for your local area and ask for someone near you who has a scanner (many of us do) to check it for you.
If you happen to be in the NYC/LI area I can help you, PM me. Otherwise just follow my suggestions above and post the code(s) here.
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Old 01-16-2004, 01:11 AM   #148
Andrew Bacon
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Default I'll pull codes for Los Angelinos

Anyone in the LA/San Fernando Valley area- I have a generic OBD2 scan tool that works fine. PM/email/call
-Andy 818-968-1328
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Old 01-23-2004, 11:07 AM   #149
Kevin Thomas
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Quote:
Originally posted by techworkseng
P0441: EVAP System Incorrect Purge Flow
1997 OBS
90,000miles
Fix???

I've allready ensured that the gas cap is tight. I swapped the purge valve with another but no change. Fuel filter and visible fuel lines show no holes. I will begin trouble shooting the pump/lines/canister etc. this weekend.

I know something is wrong because I was getting fuel starvation symptoms (hesitating/surging) when applying very light throttle under low load.

Any brilliant ideas that will prevent me from getting covered in gas this weekend?!

Thanks.

Keith
Keith,

Did you ever find out what your problem was? I have a 1997 Outback that's throwing the same code. Sometime this weekend, I'm going to go check out the fuel pump lines to be sure they do not have any holes or are torn. I did go inside the fuel tank weeks ago to try fixing another 'Check Engine' problem (P0143).
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Old 01-25-2004, 03:14 PM   #150
SubaruImpreza_power
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1998 Forester L
Stock
80K miles
Codes: P0303 Cylinder 3 misfire detected

Misfire on Cly 3.. I think this has to due with me using Bosch Platinum plugs.. However I wonder If I have the same problem as rupertberr? maybe it could be the injector? the coil pack is fine for that Piston.. However I unpluged it and pluged it back in when it was running and still sounded the same..

So right now I'm just going to get new spark plugs.. if the Problem is still their, Then it's the injector then.

Also I should say.. It only Misfires at idle.. Not at anything above 2000 rpms, Also no the light does not flash on the highway.
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