Question about 2007 Chevrolet Optra 1.6
Posted by Anonymous on
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Posted on Jan 02, 2017
How old is the Catalytic Converter, sometimes they will get clogged up and affect performance.
Posted on Aug 26, 2008
There are TONS of reasons - the first , and least expensive, step is to read the codes that the onboard computer is throwing. Instead of spending a lot of money on a code reader, or wasting money by going to the dealership, find an AUTOZONE (or, sometimes MERCHANT's will offer a "we'll check your CHECK ENGINE LIGHT for free) and they'll give you a generic read of the code(s).
I say "generic" because the computer DOES throw specific codes; the "we'll do it free" places usually don't have the same kinds of super-readers that the dealerships or high-end repair shops own. But, bear with me for a sec....this may save you some money.
If the generic code says, "O2 sensor"....that's not as specific as you'd like (because there are multiple 02 sensors!)...BUT....if ONE sensor is not functioning properly, its a pretty good bet that the other(s) will be failing soon too, since they were all installed at the same time and all were made by the same company, etc.
The "generic" code WILL tell you enough info as to which sensor is bad (the one in front of the converter vs the one behind the converter) so....if THAT is the code, then simply replace both behind or both "in front". Follow?
Now, where you'll typically get the most common code is for low fuel pressure. If you've never changed your fuel filter...that's a good place to start. The "generic" code will indicate "fuel pressure". If you've never changed the filter....see? BUT, a fuel pressure problem could also be as simple as "loose gas cap"! If your generic code says "fuel pressure", then I'd reset the computer (disconnect the battery for a few minutes and re-connect), and while the battery is disconnected, make sure that the gas cap is tight and the little rubber gasket around the cap is in tact.
Keep in mind....a "check engine light" doesn't mean that your computer is throwing codes CONSTANTLY! It means that the computer sensed something at some point while the scan was running and SOMETHING got its attention. "IF" the fuel cap was loose, for example, just re-tightening it will not reset the "check engine light"! You gotta reset the computer (disconnecting the battery is easiest), THEN the light will be off. If the light returns, then the problem was something other than the gas cap.
Taking your time and doing a little on-line research can save you a ton of money! A 2000 is relatively easy to work on yourself...at least SOME of the issues...even if you're not a really techie-kinda person. Take the easy and inexpensive shots first....
Hope this helps.
Posted on Oct 12, 2009
Take the vehicle to Auto zone to clear the computer. It may just quit doing that after the codes are clear. if the flashing continues the computer is at fault
Posted on Jan 14, 2010
SOURCE: check engine light is on
I would have them take a good look at the fuel preasure and also the coil pack, as the car may run good at times and then skip whenever,hope this helps, also have they scanned the computer for stored codes as if its skipping the check engine light must be on.
Posted on Sep 04, 2010
SOURCE: I have the engine warning
check engine lights can come on for a variety of reasons anything from low oil to a **** miss fire or a low voltage reading on a scencer i would have the computer scanned for any codes and cleared.
Posted on Dec 16, 2010
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