1997 Camaro RS V6 3.8 Automatic. Long crank and when it finally starts it has a strong gas odor. Runs terrible. I am focusing on the P1441 because I think the other codes are a byproduct of it. I have tested the Purge Solenoid and it is working as it should. One side goes to the intake and the other side goes to a gizmo then to the tank with the gas lines. Worth mentioning, the HVAC controls don't work. I have tested from the check valve to Vacuum Tank, holds vacuum. The line going to HVAC, sorta holds vacuum (probably normal?). The one to the manifold is open. So, I smoked it. It is completely severed in the harness. I have it out of the harness. I don't see the other half of the line (don't forget, half the motor on a Camaro is under the dash). There is a gizmo that the Purge Valve goes into, what is it? It goes to the back of the car with the gas lines. Does anyone know where the HVAC goes? I have felt back there with no luck. Does anyone have a pic of where it goes? Does anyone agree that could be the vacuum leak thats causing this? If it is, why is the P1441 present?
Codes:
P0147
P0172
P0175
P0300
P1441 EVAP System Flow During Non-Purge Condition

 

Worth mentioning... The temperature never gets hotter than 150º. I assume that is a thermostat not closing and a secondary problem?

 

UPDATE: I found the other end of the line coming from the HVAC Check Valve. It is on the right side of the Intake Plenum. While plugging it does stop a vacuum leak, it doesn't solve the Long Crank issue. I'm back to the gizmo the Purge Solenoid goes to. I feel like it's a vacuum issue but I don't know where to look or what to smoke.

 

UPDATE: It appears to be a Vapor Canister Purge Vacuum Switch. I can turn the Purge Valve on/off from my scanner (SnapOn Verus). I'm not sure how to test this. Is it normally closed or open? What does it do? How do I put power to it since it's under the dash. I feel like I'm going down a rabbit hole. However this does fall in line with the P1441?

 

download factory service manual here. 1996svcman should be same as yours. http://www.mediafire.com/?40mfgeoe4ctti

 

Thanks, Craby!

 

Take you gas cap off and see if you still have the long crank issues.

They only way I can think that the evap system could cause a delay in starting is if the tank is under pretty heavy vacuum and it was holding the pump back. Removing the gas cap will not fix anything but it will give you an idea of what is going one.

My first step would be to act like it was a no start and see what it is missing when it was cranking or not starting. Fuel pressure? Signal to the Fuel injectors or spark. The follow it from there. Could easily be the early signs of a failing fuel pump or a bad failing crank sensor.

It would not be the first time I have seen codes that were not causing the real issue. I have seen cars go 7+ years and 100.000 with most of the evap system missing and it had almost no effect on the way they car works. Many tuners offer to turn off evap code reporting during the tune.

 

I agree... I had stopped "Updating". I didn't think anyone was listening.

While looking at miss fire data I noticed 6 and 5, mostly 6 (firing order 165432) seemed to be getting the most action. As RMPs raised they all joined in. I suspected 6 was dead and 5 was a sympathetic miss. I put the scope on it and #6 is drawing ten times the current anything else was. I have ordered a new injector.

I also noticed the MAF Sensor was reporting 7+ grams. That might just be the injector? However the P0172 and P0175 point to MAF. I ordered a MAF as well.

Thoughts?