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Old 04-01-14, 06:18 AM   #1
sknhgy 
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Check Engine Lights :mad:

My 2007 Corolla has a CEL that is telling me there is a leak or bad electrical connection in the evap system. I changed the charcoal canister - at a cost of $200+ and that didn't help. How do you track down problems like this. I don't want to go to the dealer because they cost to dang much. What to do?
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Old 04-01-14, 06:23 AM   #2
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My 2007 Corolla has a CEL that is telling me there is a leak or bad electrical connection in the evap system. I changed the charcoal canister - at a cost of $200+ and that didn't help. How do you track down problems like this. I don't want to go to the dealer because they cost to dang much. What to do?
The one and only time I had the "check engine" light on a RAV4 I took it to the dealer and it turned out I hadn't tightened the fuel filler cap enough. I left the dealer half an hour later with a tightened fuel filler cap and a bill for something like $18.
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Old 04-01-14, 06:49 AM   #3
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Did you have the codes read? Its often an O2 sensor.

Consider ignoring it unless you see a drop in gas mileage or performance. A little piece of black duct tape in the right place helps

Try disconnecting the battery... sometimes it will reset

Many folks run cars for years with no problem with the light on.......like me
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Old 04-01-14, 06:58 AM   #4
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a small evap leak or a large leak?-large is a loose fuel cap or broken line/hose.a small leak needs a smoke type machine to locate-and a skilled tech-go to a repair shop.
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Old 04-01-14, 08:31 AM   #5
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There are places like Aamco that will give you a free printout of your diagnostics and tell you what the problem is. Without knowing the exact code, it's impossible to say. Check engine lights come on for everything from coolant that needs changing to emissions-related problems, as well as the "simpler" situtions others were describing. If your state requires annual inspections, your car likely won't pass unless you get it taken care of.
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Old 04-01-14, 09:07 AM   #6
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There is a little gadget that will read the error code and shoot it to your cellphone.
Sorry, I forget where I saw it, or what it's called. But it wasn't expensive, maybe $30?
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Old 04-01-14, 09:10 AM   #7
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Did you have the codes read? Its often an O2 sensor.

Consider ignoring it unless you see a drop in gas mileage or performance. A little piece of black duct tape in the right place helps

Try disconnecting the battery... sometimes it will reset

Many folks run cars for years with no problem with the light on.......like me
That works for me because we don't do emissions checks with state inspection where I am. Just south though and a CEL is a failed emissions check.

My Nissan Altima I couldn't get the light turned off. I replaced 3 of the cheap sensors of the 4 that were coded and pulled and cleaned the air idle control valve (the expensive one.) The car was running like crap and this fixed it right up. Still couldn't get the CEL to turn off though.

My Jetta I took in for a recall. The recall was on the coil packs which they replaced. They didn't reset the CEL though and 4 years later it's still on. I average 30 mpg out of my 28 EPA highway rating and it still runs like a raped ape. Love the torque of that little turbo.
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Old 04-01-14, 09:28 AM   #8
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It may take a few starts to clear the code, how many times have you started it since the repair?
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Old 04-01-14, 09:59 AM   #9
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We have to pass emissions here. I took it to a garage that has treated us well in the past. They are going to smoke it.
I hope it all goes well. The dealer wanted $109 just to read the codes. Screw them.
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Old 04-01-14, 10:08 AM   #10
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Old 04-01-14, 10:12 AM   #11
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Whenever a CEL comes on for us, we just go to O'Reilly's and they will read them for free.

That comment about black tape brings back memories of when we bought the Suburban. Neither the dealer's tech/make ready people or us noticed the the CEL was coming on when turning the key- it was discovered when we had the oil changed right after buying it (we always get an oil change when buying a used car). Took it back to the dealer and they pulled the panel and discovered that the light had been disconnected. We got a free brake job and the A/C recharged
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Old 04-01-14, 10:18 AM   #12
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I bought my own scanner for around $30. Advanced Auto has them, but they might be a bit more expensive there. You might even be able to find one on e-bay.
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Old 04-01-14, 10:50 AM   #13
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I had a similar problem. Went to a local shop early on the weekend, mechanic was not in yet (they run just one mechanic on Saturday, closed Sunday) but the guy who opened ran the reader and cleared the code. No charge. Most shops will read the code and clear at no charge. They figure that makes it a 90% plus chance that if it returns so will you (at least if you go anywhere).

He said that code can sometimes be spurious.

Sadly it came back 3 or 4 days later. Air leak, they smoked and found it, mainly part to fix it.
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