Question about 2000 Pontiac Montana
Evaporative emission system
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Posted on Jan 02, 2017
SOURCE: emissions test on inspection
There is a slight possibility there maybe a leak in one of the fuel lines or in the top of the tank itself. Do you ever smell fuel? If you can get the car into a clean garage, lay some newspaper or cardboard under the car and with the garage door open WIDE run the car for about 5 minutes, then check the paper for any fluid drips. Try to whiff the scent of the fluid to your nose (try not to inhale it directly) and see if it smells like gasoline. Remember the location in which you found the leak and take it to a mechanic to have them look into it thoroughly, especially in the area that you found the leak. That's just one idea you can try. It'll also help you see if your car is leaking any other fluids also. I hope this helps and don't forget to rate!
Posted on Jan 06, 2009
The gas in the oil thing can only be fuel injector related.I would start by useing a good fuel injector cleaner(recomend BG 44k)and see if that helps.On the emission code I would start by replaceing the gas cap.Its pretty common.
Posted on Mar 06, 2009
SOURCE: 1998 PONTIAC SUNFIRE ADVISE
Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump.
So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself.
The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
I hope this helps and good luck
Posted on Apr 09, 2009
Nope, you just need more miles. When the car's computer has been disconnected from power (such as when the battery is unhooked), it'll set what are called "readiness codes" when power is reapplied. It takes a certain number of miles to clear these - some cars require 50 miles, some 100 miles, and some (such as some Isuzu models) need very specific drive cycles to clear them. Once the requisite number of miles have been driven without issues, the readiness codes will extinguish and your car should pass.
Posted on Dec 10, 2009
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