Question about 1989 Buick Skyhawk

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Turn signal makes gas gauge drop and cant get wipers to turn off

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Sounds like abad earth wire some were on the car check all earth that you can are getting a good tight conection to the chassis of the car and that no earth wires are broken

Posted on Sep 05, 2009

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No dash lights, no signals wipers stay on continuously. Gauges dont work


Have you checked voltage and ground for some of these systems? These systems usually go hot with key on. As far as turn/wipers, you may have to check multifunction switch?
What is year--make--model?

Dec 21, 2015 | Cars & Trucks

1 Answer

I need a fuse chart. My car did not come with one..My wipers and instruments IE gas gauge, radio, wipers do not work


Year/make/model??? Possible ignition switch problem rather than a fuse problem. Try slightly moving key back and forth with vehicle running to see if wipers and such start working. If so, suspect an ignition switch problem

Nov 15, 2015 | Cars & Trucks

1 Answer

My gas gauge on my 1998 Olds Cutlas reads empty all the time no matter how much gas is in the tank. need solution.\r\nRoy


The sending unit is located in the fuel tank of the car. It consists of a float, usually made of foam, connected to a thin, metal rod. The end of the rod is mounted to a variable resistor. A resistor is an electrical device that resists the flow of electricity. The more resistance there is, the less current will flow. In a fuel tank, the variable resistor consists of a strip of resistive material connected on one side to the ground. A wiper connected to the gauge slides along this strip of material, conducting the current from the gauge to the resistor. If the wiper is close to the grounded side of the strip, there is less resistive material in the path of the current, so the resistance is small. If the wiper is at the other end of the strip, there is more resistive material in the current's path, so the resistance is large When the float is near the top of the tank, the wiper on the variable resistor rests close to the grounded (negative) side, which means that the resistance is small and a relatively large amount of current passes through the sending unit back to the fuel gauge. As the level in the tank drops, the float sinks, the wiper moves, the resistance increases and the amount of current sent back to the gauge decreases. This mechanism is one reason for the inaccuracy of fuel gauges. You may have noticed how your gauge tends to stay on full for quite a while after filling up. When your tank is full, the float is at its maximum raised position -- its upward movement is limited either by the rod it's connected to or by the top of the tank. This means that the float is submerged, and it won't start to sink until the fuel level drops to almost the bottom of the float. The needle on the gauge won't start to move until the float starts to sink.


Something similar can happen when the float nears the bottom of the tank. Often, the range of motion does not extend to the very bottom, so the float can reach the bottom of its travel while there is still fuel in the tank. This is why, on most cars, the needle goes below empty and eventually stops moving while there is still gas left in the tank.

May 30, 2011 | 1998 Oldsmobile Cutlass

2 Answers

Gas gauge is not working, how do I fix?


either the gauge in the cluster is bad or the sender in the gas tank is bad. look on youtube for videos of folks removing clusters and dropping gas tanks and figure out which you want to try first. my experience the sender usually is the bad guy. this is simply a flotation device in the tank which rides on the top of the gas, sends a signal. if you do the sender, make sure you also replace the fuel pump while you are in there as it is 10 years old

Oct 23, 2010 | 2001 Buick LeSabre

1 Answer

Gas guage not working


Voltage from the battery goes through the ignition switch, through a device in the instrument cluster called a voltage regulator (though it is really misnamed), through the gauge, through the wiring to the gas tank, through the sending unit in the gas tank to ground.

The sending unit is an electrical wiper that slides across a peice of resistance wire. the movement of the float moves the wiper. If the sending unit no longer makes electrical continuity, the gauge will read zero. If the sending unit wiper is shorted out, the gauge will read full.

Try grounding the wire at the tank to see if the gauge maxes out, then disconnect it to see if the gauge zeros out. If all that happens, your problem is the sending unit in the tank. If none of that happens, your problem lies closer to the front of the car. While you are under there, you should measure the resistance from the terminal on the tank to ground, just to verify that the sending unit makes some electrical contact.

If the other gauges work OK (temp, oil pressure) then the "voltage regulator" is probably working fine, and the problem is the gauge itself.

If you have no other gauges (excluding speedometer, tachometer and battery voltage meter -- they work differently), then try this:

Put a voltmeter on the part of the fuel level gauge that is supplied by the "voltage regulator." The voltage there should regularly cycle between near zero to 10 or 12, back to near zero, etc. If you get that cycling, then it is most likely the gauge.

Jun 15, 2010 | 1988 Chevrolet Monte Carlo

2 Answers

Gas gauge goes to empty and then full after fillup


very well sounds like the sending unit in the tank. Try running some octane booster and fuel injection cleaner in tank of the truck to loosen any deposits on the float.

May 27, 2010 | 2007 Nissan Pathfinder Off Road

1 Answer

Car suddenly wont start radio,wipers,gauges wont work


Very possible you may have a faulty voltage regulator. I would have it tested which many places do for free.

Aug 21, 2009 | 1996 Dodge Caravan

1 Answer

Transmission problem ? Dash gauges


Ignition switch and wire harness for ignition switch. My husband did both. I was losing dash gauges intermittently and overdrive. Now that is fixed and six months later looks like I need the multi function switch(turn signal, wipers, cruise lever). My husband has to take that all apart again for this problem. My turn signal blinker noise won't shut off. Driving me crazy.

Aug 11, 2008 | 2000 GMC Jimmy

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