Took a weekend trip to the river, drove a few hundred miles,
On the way home not far from home as a matter of fact my Impala started to sputter and die, I had half tank of gas. After sitting for a few minutes it would crank but when putting it in gear it would sputter and die. No sensor lights came on no check engine light, The only light that came on was the change oil light. Checked the oil and there was plenty and it was not that dirty. Managed to get it to Auto Zone they hooked it up to the computer and it said that no error codes had been thrown.
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Amazing.....At this very moment in time.....my 2000 silhouette is doing the same thing....if you were unaware.....ventures Montana's and silhouette are from the same mold. Very similar in all aspects. My diagnostics have got to the fuel pump part of suspects....but I have already checked filter, relays, fuses and ignition electronics....my latest suspect is the pressure sensor that monitors the pressure of the gas tank....there is also a pressure sensor on the injector rail I'm suspicious of. I'm going to find out how to place each sensor in "okay ....fuel pump turn on and pump fuel to the throttle body" to check them. In my case....I don't smell any gas after turning the engine over....trying to start it.....sometimes for over an hour....never any gas smell....so I suspect fuel delivery is the problem. The fuel pump has several sensors that control whether or not it needs to run....and pump gas. I can hear my fuel pump run for 2 or3 seconds when I turn the ignition to the on or start positions.testing all of those sensors is my plan of action for this 3 day weekend. Your on track with your work and suspicion of the position sensors......vacuum leaks will follow the sensor checks. Vacuum leaks could cause a couple of sensors to fail too.....I dropped my fuel tank last weekend....and found the fuel pump to be in working condition.....I removed my fuel filter and punched a hole through it for free flow.....to eliminate it from the list...after checking the vacuum angle....I will move to the electronics side.....with the ignition switch first and the transmission position indicator switch following.....I've plugged my trouble code reader in and didn't get any indication of any failed electronic devices......my problem and your problem seem to be very similar, except that I am doing all of my work on the van myself. I will try to keep you informed of my diagnostics through fix it.it would be nice to know how yours is advancing too.....there are a few directions you can progress into.....hope one solves your problem....if not.....there will be more ideas to come....until I solve my problem....good luck to. Us both and onward we go......Nick.ps couldn't spell or grammar check because I'm using my phone to compose....and the typing pad covers the entirescript being typed. Sorry for any problems. Associated
I had a similar problem that turned out to be dirt contaminated gasoline. The "fix" was always to replace the fuel filter but it would not stay fixed. In particular, each time I started having problems it was after I let the gas tank level get low.
What I did that you can consider was:
But a new fuel filter.
Get a 5 gallon gas can.filled with fresh gas.
Get some cheap gasoline proof container (or several containers) for waste gasoline.
Make a "vacuum cleaner" out of an electric in-line low pressure gas pump, some low pressure gas hose, and a couple of pieces of copper tube, 20 ft of two conductor wire, and two alligator clips. It connects hydraulically copper tube to suck out the gas tank, fuel hose, pump, fuel hose, copper tube to go into the gas can. The wire and clips are to hook the fuel pump to your car battery.
Drive the car until the fuel level is low.
Remove the fuel pump module.
Vacuum the gas tank into the waste gas container through the opening left by the fuel module. Try to get the dirt off the bottom.
When you have vacuumed all you can get, stop awhile and let the dirt settle in the waste container.
Vacuum the gasoline from the waste container back into the gas tank. Vacuum high in the container so the dirt stays in the waste. Try to wash any dirt in the gas tank to below the fuel module opening.
Stop a while and let the dirt settle.
Repeat vacuuming and washing as many times as needed to get the tank clean and empty.
Inspect the tank interior with a mirror and flashlight looking for rust, dirt, etc.
Running so few miles has accelerated the aging of the battery - the battery never had a chance to fully recharge in such small trips - so now you have to replace it a year sooner than usual.
Just replace it.
the damage could have been caused by the leaky intake. you may not have caught it in time. if coolant was getting into the oil(mixing) it will wipe out your bearings. that being true..it is also true that they could have caused the problem in a few ways. it would be very hard to prove, due to the fact that you did have an intake problem. hope this helps
Sounds like a possible fuel pump problem...When they begin to go bad they will overheat and lock up, then work fine for a while and do the same thing again. By changing the filter you lowered the flow resistance and allowed the pump to work a bit easier but still being bad, it did the same thing again. There are other things that can do this as well, but pump is most common.
Try cleaning the fuel pump filter. Under the seat behind the driver lift the carpet and you will find a round cover with six screws remove the cover. The fuel pump is directly below unscrew the retaining round plate and remove the pump. At the base of the pump is a small filter if it is covered in black muck that's your problem. clean and replace. job takes about 10 mins good luck. please let me know how you got on!