I think I got bad gas either water or junk because I never had any trouble then added gas, on an almost empty tank, and the very next day it started to stall, chug and choke. We added dry gas, no good then my husband changed the fuel filter, nothing, then the fuel regulaor and then the fuel pump. It ran better and I drove it to work and it quit again it was hard to start and we had to trailer it home. My son, who is an auto tech was visiting so my son and husband did some diagnositcs and they unplugged the mass air flow censor, the O2 censor and the car did not even miss a beat so they determined that it may be the PCM or brain. We changed that out and it ran fine for a couple of days but today it started chugging and choking it did not stall but it seems to happen at low speed about 20 or so.?? any ideas?? Thanks,
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There can be several things that cause it. (I ordered a trouble code unit for these things.) This is 1 easy thing, fill the tank with around 88 octane and add dry gas with injector cleaner. This will get out water vapor and some other junk. A bad or malfunctioning O2 sensor can cause that also. (Most parts stores can check for trouble codes.) Most parts chain stores can give you a rough idea. To me it sounds like it's getting to rich of a mixture and "flooding".
Next time it does that, pop the hood and see if it has a strong gas smell. It could be as simple as a clogged fuel filter. Does the check engine light come on? If so it has sensed something not working right. hence you can get a trouble code. A bad gas cap can cause more troubles than you'd think.
I think you should head to a mechanic. Sounds like you got water in the fuel system. You could possibly resolve the issue by filling up with a fresh tank of gas, but that could also cause more problems if there is a lot of water in there already. I'd take it to a trusted mechanic.
The sulfur smell is usually low grade gas or a problem with the catalytic converter. In your case I would go for bad gas, especially if the problem just started happening recently. You can try adding premium to the tank and drive it out. You may have to replace the fuel filter once or twice if the gas has water or other contamination.
Looks like your fuel supply line has got chocked. This happens when the dirt from the gas tank comes into the fuel line when the tank is getting empty as it has happened in your case. Check your fuel filter and replace if required.
Possible fault could be that the empty tank had broough in dirt into the filter or fuel system. Please try to remove the line and check or replace fuel filter.Even it is possible if water is inside the system which will come out only when the tank is empty. Check this out.
This sounds like it may be as simple as cleaning the water or gunk out of the gas tank which is what I always do 1st because it's easy and inexpensive.
If your fuel is contaminated with gunk, grime, water and/or bottom junk like rust this will cause stalling!
It's most likely bad fuel or clogged injectors so....
Fill the tank with High Test, Add some dry gas and a good fuel system cleaner or 2 or 3 and this should dissolve all the gunk and clean the injectors!
Read & follow the cans' instruction carefully.
If this cures the problem never let your gas tank get below 1/4 and especially never run it to empty as this is when the gunk and/or water will enter the system!
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