99 Cobra continued issues.

[PotatoC570]

I am having issues with my 99 cobra. About a week ago I lost all power to the engine and had to get towed. I have 400 miles on my rebuild after getting the kinks worked out of it.

Now I was able to get a reader from my friend and I threw code P0340 which is a cam position sensor code. I replaced the sensor, cleared the code. The car will start and run if I have my foot the the floor but then the RPM goes from 1000 to 2000 and back down to one, almost like I have a huge lumpy cam in it. But, I do not sadly and it is just running poorly. The code says it could be anywhere from a sensor to wiring to the PCM. I pulled up the handy inter-webs and I found out that there is a known issue that an out of phase alternator could cause enough interference to cause the cam sensor to get all out of wack. If this is the case, should I take the belt off and run the car to see it happens, or unplug the 3 pin connector on the top of the alternator itself? I do not want to spend 190$ on an alternator for it not to be the issue.

 

[01yellercobra]

Did you ever pull the FRPS and check it? I've never heard of an alternator affecting the cam sensor on these cars.

 

[PotatoC570]

Did you ever pull the FRPS and check it? I've never heard of an alternator affecting the cam sensor on these cars.

No, I did not. But, why would the FRPS throw code P0304? Would it not throw its own code? The only engine code I have is because of the cam sensor issue. If I take it off how do I test it?

 

[PotatoC570]

http://www.allfordmustangs.com/forums/4-6l-tech/309132-p0340-error-code.html

https://www.stangnet.com/mustang-forums/threads/p0340-camshaft-position-sensor-circuit-fault.721665/

http://www.moddedmustangs.com/forum...gine-light-still-off-but-backfiring-help.html

 

[01yellercobra]

No, I did not. But, why would the FRPS throw code P0304? Would it not throw its own code? The only engine code I have is because of the cam sensor issue. If I take it off how do I test it?

Because electric gremlins can be weird. My wife's 06 GT will throw a cam sensor code when the alternator dies.

Sent from my SAMSUNG-SM-G935A using Tapatalk

 

[PotatoC570]

Because electric gremlins can be weird. My wife's 06 GT will throw a cam sensor code when the alternator dies.

Sent from my SAMSUNG-SM-G935A using Tapatalk

So how do I check the FRPS when I go home?

Also, I posted those links for you to read.

 

[PotatoC570]

Because electric gremlins can be weird. My wife's 06 GT will throw a cam sensor code when the alternator dies.

Sent from my SAMSUNG-SM-G935A using Tapatalk

The alternator thing did not work, it still acts up. Still have the cam code, how do I check the FRPS.

 

[01yellercobra]

Posted in your other thread.

How did you check the spark? Usually if the plug is wet it's a sign there's no spark.

Or....I wonder if your FRPS blew? When I had one blow the car run like crap, was hard to start, and I could smell the gas. It might be worth pulling the FRPS and seeing if you can blow through the vacuum port.