Engine power cuts out at 2500 to 3500 rpms
 

Did a little work to my 86 camaro its got a 305 now the power cuts out around 2500 to 3500 rpms i am running out of ideas the engine light is on and the code reader has read anything from the mass air flow sensor to now the o2 sensor any ideas would help it is now reading code 45 but it has a new 02 sensor let me know what you think.



Thanks Dustin

Re: Engine power cuts out at 2500 to 3500 rpms
 

exhaust is running rich

Re: Engine power cuts out at 2500 to 3500 rpms
 

If you've traced down lots of codes that don't make much sense you might want to get a new ECM, but not before you check all your grounds.

Also, in some situations the module inside the distributor can go flaky and give you certain "windows" in the RPM range where they break up or lose power. Pretty rare, but it can happen.

Re: Engine power cuts out at 2500 to 3500 rpms
 

Any suggestions on how to go about fixing either of those I just replaced the distributer coil and what not so I'm just lost at this point.

Re: Engine power cuts out at 2500 to 3500 rpms
 

Can you elaborate on this?
What all did you mess with in the process?
Pull any vacuum lines or electrical connections? EGR unhooked?

Re: Engine power cuts out at 2500 to 3500 rpms
 

Well the engine was rebuilt some vacum lines were bypassed before the rebuild and didn't have problems then and there is an egr delete kit All sensors are brand new and all electrical is hooked up.