Problem with my 2002 Chevy Venture
3.4L v6 3400
GM tech = JK
question = I stopped for gas a local gas station one Saturday afternoon and
filled my van up with gas. The gas gauge was working at that time I bought
the gas. At first I thought it was bad gas. It has not worked since that day .
It will read full unless is idling then it will go to empty but go back up to full  
after I've driven it and went around a curve or stopped and turned. Then it
goes back to full. I've learned to drive without a gas gauge by using my  
mileage and gas purchases every time. So plan on the miles I can drive on
full tank or whatever.
I'd like to solve this problem soon. Being a single parent of 3 children still  
living at home I am not sure I will be able to afford the repairs.
If it is something simple I can do myself I will....my step dad was mechanic  
and I learned a lot from him plus working for a car dealerships over last 9
years has not been a bad thing either.
Added freon, cold on driver side, blows warm on pass side, now all warm
2001 trans has code P0753, no 1st gear, starts in 2nd. 1-2 shift solenoid
A few other Chevy questions.
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JK:
Answer: Two possibilities. The  most common is a faulty fuel level sensor. This  
sensor is attached to the side of the fuel pump assembly in the fuel tank.  The
tank would need to be removed to replace the sensor. Another  possibility is a
corroded connection for the wiring to the fuel pump. There is a connector under
the van that is prone to getting water into the connector  and causing a fuel
gauge problem, and sometimes ABS light. It's just a  matter of unplugging the
connector, cleaning the terminals, and adding a little grease.
Question: This morning I took my daughter to school and the van seemed to be accelerating, or pulling
itself,  on its own.  Once I got home and put it in park the engine revved up very high and continuously.
 I shut it off and then started it up again and it didn't do it.
Any thoughts on what would cause this?  I would like to have some help information wise before I go to
a mechanic.  I am female and not mechanically inclined by any means.  They usually see me coming!
Help please, Sherry.
Answer: First thing that is needed is to get the code scanned
from the computer to see if any are in there. Most of the
large national parts store chains will do this for free. If no
codes, or there is a code for a Throttle position Sensor
(TPS), then this is a common problem on this engine. The
TPS is most likely the problem.