Camshaft sensor and P0340

[cruiser_wa]

Hello,

I am a newbie to the forum, hoping someone can help me. When I was driving on highway 60-65 mph, suddenly the engine light came on and engine start cycle up and down. What I mean, if I apply the gas it will go about 3000 rpm and then suddenly drop down 2000 and then go up and again etc. I managed to get out the highway. It kept doing up regardless of the gear I was in. When checked the diagnostic code, it returned the code P0340. Thanks the info on the forum, I learned this either means some battery issue, or an error with camshaft sensor. So, I got a new one, and again thanks to this forum (you guys are great), I replaced it. I also checked the voltage on the battery, which reads 12.66V. I didn't check the amps, because I couldn't figure out how to do it. But I don't think its that because I notice no cranking issue when I start the car.

Anyways, I do not have the issue when I am driving anymore. I went up to the highway, made sure the RPMs are way above than when I had the issue. Try to accelerate aggressively so forth. Drove about 10 miles, and there was no sign of that stuttering. But, when the car is parked or N, if I push the gas and increase the RPM same thing starts to happen between 3500-4000 RPM. I never this before so I can't tell it started to happen with my incident, or its just normal behavior (though doesn't feel like it).

So my normal driving is fine, but I still would like to know if there is any other issues so that I avoid another highway scare.

There are some fairly stupid around where I live, who would try to take over or won't yield to a car that's clearly in distress and have its flashers on trying to make to the side of the road.

[randyincctx]

Originally Posted by cruiser_wa

But, when the car is parked or N, if I push the gas and increase the RPM same thing starts to happen between 3500-4000 RPM. I never this before so I can't tell it started to happen with my incident, or its just normal behavior (though doesn't feel like it).

Are you still getting the P0340 code,or maybe a new one?
I'm not sure if that's the rev-limiter kicking in @ 3500-4000,but I haven't really revved up like that when in 'N' either.
If your still getting the P0340 code,you might want to check the harness from the connection back,and see if the wiring insulation is hardened,brittle,or broken.....
Or if you purchased an aftermarket CPS,there is always the possibility it's no-good right out of the box(fairly common complaint w/aftermarket replacements).

[cruiser_wa]

Hi,

I drove about 10 miles, and engine light didn't come back on. It shows "done" and no other code. Hopefully it will stay that way

Meanwhile I am curious about the rev-limiter kicking in P or N.

[SanchB]

Sounds to me like a definite rev-limiter. I know mine does this, but it's a turbo and I have read that is normal. I'm assuming it would be the same even for non turbos if it's a manufacturers doing, but better check that statement... U know what they say when you assume.