Question about 1997 Chevrolet Cavalier
This sounds like a classic fuel system problem. Manually check your 1 & 3 plugs to prove /disprove the code. If they're OK, which I'll bet they are, check the fuel pump. If it tests good then you have a fouled gas tank, I'll bet. Especially if you live in the Northwest. If you let it sit with low fuel, the extra air space lets condensation form, causing rust and moisture in your gas. Usually changing the fuel filter will give you some temporory improvement if this is the problem. If it didn't then it could be your air intake not delivering enough flow to give it the proper fuel/air ratio. When's the last time you changed the air filter?
Posted on Nov 17, 2009
Testimonial: "Helped me rule out the fuel system."
Sounds maybe like your Mass Air Flow Sensor could be at fault it is responsible for adjusting the amount of fuel delivered to each cylinder by the amount of air and the temperature and the charge. try either getting some Mass Air cleaner available at any auto parts store for around 3$. This should fix your problem.
Posted on Aug 05, 2011
You're probably reaching the end of what can be done at home. However, here are the next steps if you can do them. If the coil pack has 3 wires leading to it on is the power and the other two are the ground wires that the computer uses to fire the coils in pairs. If there are 4 wires, there is a separate power for each coil. If there are three, you need to check for continuity between the ground for the intermittent coil and the ECM (computer) If there are 4, you also need to check that the power is consistent. It's also possible that the ECM is going bad -- depending on where it is located in that vehicle, tapping on the fusebox may vibrate it. GM used to actually tell us to smack the ECM to check for problems in it! Good luck, as I said this may be beyond what most "shadetree mechanics" are able to do without special tools and wiring diagrams.
Posted on Nov 18, 2009
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Posted on Jan 02, 2017
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