So ive now replaced, plugs, wires, cap, rotor, ignition coil, cam pos sensor/pickup coil. Did an injector test with my solus snap on scanner and every valve clicked for each injector. So wouldnt that mean I have injector pulse? The scanner reads 0.0 mS for the injectors tho when I crank the motor. Does that mean my pcm is bad? And right after i prime it with fuel and crank itll make some puffing noises out the intake. I'm really at a loss on what to do. The motors been replaced before and someone suggested it might of went out of time.

 

If your scanner is telling you zero injector pulse width, you need to find out WHY it is doing so. Can you monitor which injector should be firing??? Will it tell you that? Getting spark? Got fuel pressure?? Timing is purely mechanical. It can't get out of time, without something breaking, or, someone's intervention. (or, a loose distributor clamp....)

 

Nah wont tell me which one should be firing when, will tell me the pulse width for each individual one. It has fuel pressure and has spark. And im pretty sure the timing is on. I pulled the #1 plug and brought it to TDC and the rotor was pointing at #1 on the cap. Im wondering if i need a pcm. I still get my P0505 code and it has a new iac valve and the throttle body is as free of carbon as it gets.

 

May be a problem with the wiring then..... If you can test the injectors with the scan tool, and they appear to be working..... what about the cam position sensor? is IT working?

 

It cant check that, but as far as I know it's working, its brand new so id hope so. I think ima try a junkyard pcm and see where that gets me next.

 

Check for a ballast resister, or the crank positioning sensor..old dodges..check main fuse.

 

Havent changed the crank pos sensor, but the rpms shoot up a lil when I start it and my scanner reads the rpm's so shouldnt that be working? And I don't believe mine has that resistor, someone said they usually have em on the firewall but I dont see it. Changed out the pcm and it did nothing, Put a test light on my injectors but only one made it light up, pulled the map sensor connector and didnt change anything. Im at a loss.

 

Verify you are getting power to all of your injectors. They are 12 volts, so, test light will work fine.

 

If this does end up being a cat issue, order the magnaflow bolt up from this website, its the cheapest i found, and i had no issues with the site, came the day they said it should and has both holes for a pre and post 02 sensor, but if your truck doesnt have the post it comes with a plug, its pretty simple to install except you need too weld the driver side y pipe to the cat.

The total with shipping is 154.-- something

http://discountperformanceexhaust.co...5-p-20291.html

 

100% sure its not the cat. Something to do with injector pulse i just dont know what.