[gotn20]

Ok so i have a problem with my car with hesitating under partial throttle constantly poping throug the intake and out the exhaust and generaly running like shit. I thought it was because my car was sd with a cam so i converted to mass air. It now runs much worse. I've checked and double checked that the install is correct. The mass air meter is working if I take the filter off and blow into it revs the motor. Any ways everybody told me to pull my codes and check back. The problem is the car runs so bad that with the idle screw up all the way it won't make it through koer or whatever test. It just dies. I did get some non running codes but i don't know what the fuck they mean. The other problem is i noticed when I was pulling the codes that my headers were just glowing red when it's running. It never did this before. Stock timing and fuel pressure. Any way's here are the codes, Park nuetral positon switch circuit open, CANP circuit failure, fuel pump circuit open pcm to motor ground, secondary air diverter failure, secondary air bypass failure. Does this mean shit to you guys? Thanks for the help guys i'm at my wits end with this shit.

[1slo5.0]

Originally Posted by gotn20 Ok so i have a problem with my car with hesitating under partial throttle constantly poping throug the intake and out the exhaust and generaly running like shit. I thought it was because my car was sd with a cam so i converted to mass air. It now runs much worse. I've checked and double checked that the install is correct. The mass air meter is working if I take the filter off and blow into it revs the motor. Any ways everybody told me to pull my codes and check back. The problem is the car runs so bad that with the idle screw up all the way it won't make it through koer or whatever test. It just dies. I did get some non running codes but i don't know what the fuck they mean. The other problem is i noticed when I was pulling the codes that my headers were just glowing red when it's running. It never did this before. Stock timing and fuel pressure. Any way's here are the codes, Park nuetral positon switch circuit open, CANP circuit failure, fuel pump circuit open pcm to motor ground, secondary air diverter failure, secondary air bypass failure. Does this mean shit to you guys? Thanks for the help guys i'm at my wits end with this shit.

What were the numbers for the codes? Descriptions vary depending on where you look them up. I'd like the numbers so I can look them up. And for future reference, speed density issues with a bigger cam is limited to idle only due to lower vacuum. Normal driving isn't affected....at least not in any of speed density cars I've owned.

[ryans88gt]

sound like timing is retarded too much. Did you remember to put the pin back in after setting the timing. Have you checked the timing.

[1slo5.0]

Originally Posted by ryans88gt sound like timing is retarded too much. Did you remember to put the pin back in after setting the timing. Have you checked the timing.

Either that or its rich as hell. I'm kind of curious as to what code numbers the "CANP circuit failure and fuel pump circuit open pcm to motor ground" are.

[ryans88gt]

Sounds like something to do with the fuel pump relay ground which is provided by the computer.

Another possibility would be a stuck injector.

Maybe a bad computer ground.

[1slo5.0]

Originally Posted by ryans88gt Sounds like something to do with the fuel pump relay ground which is provided by the computer. Another possibility would be a stuck injector. Maybe a bad computer ground.

I don't think one injector stuck would cause both headers to glow red. Maybe one tube but not all of them. I think the problem is deeper than that. You might be on to something with the bad ground. I wonder if the timing was set correctly.

[ryans88gt]

true about the one injector.

I would start with timing and looking up the codes

[gotn20]

The one thing I'm not sure on is that the base timing is correct. It's set at 10* by a light but i need to double check the base.As i haven't looked at it since i set it when i rebuilt the motor So i bump it till i feel air out number with my finger on the spark plug hole. Then turn the crank till it's at zero on the balancer and then make sure the rotor is pointing at the number one right? It never did the glowing shit when it was sd. The codes were 85, 67,81,82,95. I tried to get the engine running codes but it gets to the very end of the test and right as it starts to flash the idle goes down and it dies. I have the idle screw all the way up. Maybe if i drive the shit out of it for a min to warm it up and make it.

[gotn20]

also now that you guys mention it my car does this shit where when i turn the key off the fuel pump primes

[1slo5.0]

Originally Posted by gotn20 The one thing I'm not sure on is that the base timing is correct. It's set at 10* by a light but i need to double check the base.As i haven't looked at it since i set it when i rebuilt the motor So i bump it till i feel air out number with my finger on the spark plug hole. Then turn the crank till it's at zero on the balancer and then make sure the rotor is pointing at the number one right? It never did the glowing shit when it was sd. The codes were 85, 67,81,82,95. I tried to get the engine running codes but it gets to the very end of the test and right as it starts to flash the idle goes down and it dies. I have the idle screw all the way up. Maybe if i drive the shit out of it for a min to warm it up and make it.

You did set the timing with the spout out and then plugged the spout back in didn't you? What do you mean you have to double check the base?

How did you do a mass air conversion and what parts did you use? Did you repin your harness when you put the mass air computer in? Or did you swap for a mass air harness? Is the black ground connected up by the battery tray? Its a black round type connector that looks similar to an old glass style fuse holder.

[gotn20]

I ment make sure i stabbed the dizy correctly on tdc. I alway's pull the spout to set timing. I re pin'd my harness, and i've checked and double checked using the two common mass air write ups that i did it correctly. The intake back firing and sputtering were happening before i converted to mass air. After they still exist, but now the car won't idle and the headers glow. It runs good at wot but like absoulute shit at anything else. I've tried different tps's, maps, coils, plugs, wires,cap, rotor, fuel pump, press regulator. The only other thing i noticed was the spark was blowing out the side of one of my brand new msd wires that night to... And after i turn the car off the fuel pump whines and primes the sytem like i turned the key on. My buddy is supposed to roll over tonight and let me try his mass air meter to see if it helps. I'm down to that, replacing my 160 tstat with the correct one, i have two injectors with broken pintle caps, and my 02's are stock one that i self extended for my long tubes so maybe they shit. Would the engine running codes help alot more? What do you think of the codes i posted? Ryan, darrell thank you guys so fucking much both of you guys have helped me on multiple occasions and I always apreciate the advice and try and listen to a t.

[1slo5.0]

Originally Posted by gotn20 I ment make sure i stabbed the dizy correctly on tdc. I alway's pull the spout to set timing. I re pin'd my harness, and i've checked and double checked using the two common mass air write ups that i did it correctly. The intake back firing and sputtering were happening before i converted to mass air. After they still exist, but now the car won't idle and the headers glow. It runs good at wot but like absoulute shit at anything else. I've tried different tps's, maps, coils, plugs, wires,cap, rotor, fuel pump, press regulator. The only other thing i noticed was the spark was blowing out the side of one of my brand new msd wires that night to... And after i turn the car off the fuel pump whines and primes the sytem like i turned the key on. My buddy is supposed to roll over tonight and let me try his mass air meter to see if it helps. I'm down to that, replacing my 160 tstat with the correct one, i have two injectors with broken pintle caps, and my 02's are stock one that i self extended for my long tubes so maybe they shit. Would the engine running codes help alot more? What do you think of the codes i posted? Ryan, darrell thank you guys so fucking much both of you guys have helped me on multiple occasions and I always apreciate the advice and try and listen to a t.

Have you checked the fuel pressure at all? Definitely put a 180 thermostat in. How does the car run when the engine is cold? Any different than when the engine is warm? When did the problem start? Is it possible that the timing chain jumped a tooth? Check that computer ground by the battery too.