Do you ever find e85 that's higher than 85%. I ask cause my cheap test tube reading can vary from 85-89% or so. I get fuel from HEB.
Do you test your fuel every fillup?
- Thread starter QuikHD
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Do you ever find e85 that's higher than 85%. I ask cause my cheap test tube reading can vary from 85-89% or so. I get fuel from HEB.
The test tube shows e83-85 on the same gas the sensor is reading as E77.
We let the test tube sit overnight, and the ethanol content dropped to what the sensor was reading.
Do you have link to the device you use? I assume it goes in the tank?
Was the fuel already in your tank or did you test in a separate can etc. first?
^Those look pretty nifty!
Id do it. Def not scared. Ran e85 in my lightning for over a year and never checked it once.
Furthermore, if adaptive tuning is on...STFT's and LTFT's are used to adjust WOT fueling.
Shoot, I didnt even run a wideband. All stock gauges on the truck.
Heres passing the 1/4 mile line...stock heads and cams with a ported eaton @ 18psi
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my bro in law filled his f150 first.... but a sample was dispensed into a mason jar at the same time. I tested it right before we drove off and my heart just sank when I saw the reading....then tested it again to be sure. The one and only time I had not tested in 14 months before a tank got filled and we got burned. I said f-it...lets drive and see what happens...check engine set off 2 minutes down the road with 2 rich codes. We made it to bro in laws house and I called 04sleeper...he said best scenario is drain it. We took the fuel line off the fuel filter, got a clear hose, hot wired the f150 pumps and drained 20+ gallons into my bro in laws flex fuel tahoe. Ran down to kroger with a 5 gallon jug, found good E85 and took it back home to the HD f150
Not sure where you heard that but it is incorrect.
When in closed loop, the computer takes readings from the oxygen sensors which read +/- of 14.64 AFR (Stoich) for your ECU, and makes corrections for it. If your car is idling either rich or lean, the ECU will adjust to try to achieve Stoich. However, the narrow band O2 sensors will only read to a certain point. After that, it will throw a check engine light as c6zhombre mentioned happening. Exactly what I told him would most likely happen. This is only a cruise and part throttle and has nothing to do with WOT.
When the car goes into open loop (WOT), those inputs get ignored and your fueling is purely based off the MAF transfer function and the open loop fuel table. When a car is started, the computer is in open loop until certain criteria is met. The o2 sensors need to be heated to work properly, so this is the main reason there is a delay. After the sensors are heated up, the car goes into closed loop and the O2 sensors make their corrections. The computer will go back into open loop under a variety of conditions. Throttle Position (TP) is one way. There are parameters in the computer that determine what the TP is for Open Loop, and other things. When that TP is reached, and the car goes open loop, and richens up.
Hope this helps explain a little better.
Which flow through sensor are you using, the ones in the article look tiny compared to my -8 AN supply. Of course I don't want to cut down on fuel flow just to test the fuel.
That sucks, I'd make the station pay especially since you show them the results and they agreed by shutting off the pump.
my station is 85% now but will that change in the winter months? Can I leave e85 in my gas tank if I dont run the car for 3-4 months during the winter?
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If you take a look the complete kit from that place is $380, that's not a bad price. You will pay almost that much for a good fuel pressure gauge. It has me thinking... Thanks Tracy, another thing I want now!
Thanks John. You know how ghetto and rigged my cars are. ;-)
The sensor is -8 and it's in the return line. No leaks, no issues and the setup has been driven in all kinds of conditions from drag racing to road course to a 4000 mile trip from TX to Ohio and back.
It also has a fuel temp sensor on it with a switch inside the car so I can keep an eye on what's going on with 3 big pumps working in the tank.
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