Question about 1996 Pontiac Grand Prix

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Gas gauge fluxes up and down - 1996 Pontiac Grand Prix

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Fuel Pump sensor. Easy DIY if you have a cut out center in rear seat unlock & fold down while in back seat lift carpet in the trunk right in front of it you will see a silver metal plate that covers the fuel pump & sensor remove it and the sensor is located on top right under plate. This is also to protect the sensor and fuel pump. You should be able to complete the task in about 30 minutes.

Posted on Apr 27, 2014

Testimonial: "how do I fix it after I get it out"

  • John Warren
    John Warren Apr 29, 2014

    Try your fuel cap first,if not then a fuel pressure test or reference fuel pump and sending unit item #472407127266 by Spetra about $113. The fuel level sensor is built in the unit.



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1 Answer

Why is my gas guage is going up and down in my 1999 caravan?

Could be power fluctuations to the fuel gauge sending unit, a bad sending unit or a bad gauge. The sending unit would be the most likely cause.

Aug 11, 2014 | 1999 Dodge Caravan

1 Answer

Gas gauge stay on full but at idle moves up and down

Replace fuel sender in gas tank, mounted on fuel pump module.

Jan 17, 2014 | Cars & Trucks

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Started my 2005 Kia Sorento this morning. It sounded and felt rough than died. Started it again gave it some gas and kept running rough. but RPM's fluxing up and down.

If no "check engine" or "wrench symbol" shows on the dash, the problem may be with bad gas.

If you do have a light displayed on the dash, Autozone, Advance, and Oreilys will scan the car for free. They can give you the defect number and sell parts to you if you can fix it yourself. If you need someone to fix it, at least when you call, you can price the repair by name.

Let the car idle and warm up before accelerating. See if it smooths out or makes noises. The noises would indicate problems that should not be driven.

I hope my solution is helpful.

Sep 11, 2012 | 2005 Kia Sorento

1 Answer

I have a 1998 dodge grand caravan and my gauges won't come on

Im a computer Geek, not a car mechanic; My mechanic took the Guage Cluster Out and Insisted: I NEED a new one; Not True and Its a V.E.R.Y. Easy fix.

1.Remove Srews.
2.Unplug the main instument panel power supply plug.
(there may be a few bulb sockets that need to be disconnected, as well).
3. Don't Bother Examining the Contacts, Opposite the Plug In Socket.
4. Heat a Soldering Iron (Buy a Cheap 9.99 Soldering Iron, Solder, Flux) kit
(sold at Radio Shack; You want the thinnest Solder and USE THE FLUX. Not using flux, and/or 'cold soldering' is most likely the reason the solder cracked).
5. The cracks are so tiny you cant see them, all of the time, even under magnifier, so just brush, or dip your finger into flux and smear it over the 8 or 10 pins.
6. Heat one by one until original solder melts on each of the Power Socket Pins.
7. Let Cool, Wipe Clean..
8. Flux all Contacts Again,Flux heavily, heat an extra thin solder on the tip of the iron, not on the circuit board and try to drip a small blob of solder onto each of the your 8 to 10, or so, etc. contacts.
11. Make ABSOLUTELY CERTAIN, no 2 contacts are touching each other; if so, melt the solder off of one or both of the two touching one another.

I am A computer repairman who has made a small, side business, of soldering contacts, on guage clusters, for as many repair shops, in my community,who wish to pass savings onto their customers. I charge $25 per and hope the shop owner passes their savings onto the consumer.

So Far? 95% of the clusters i have soldered, were repaired by this method. Its so reliable: if It doesn't work, there's no charge~!, if any questions

Sep 17, 2011 | 1998 Dodge Grand Caravan

1 Answer

While sitting in park, my 1999 ford explorer with the 5.0 v8 has good oil pressure on the gauge. After driving for awhile the presure starts to flux really bad. The presure remains good while driving at...

maybe it's ur gauge! you can get it pressure tested at ur local auto shop for pretty cheap i think! Sounds to me like its nothing major as long as you know you got oil pressure! ( check temps while driving) BUT i wouldn't worry to much about it as oil pressure tends to flux as car is driving/ getting warm and oil gets lighter. Worst case scenario is a leak in the timing cover gasket and whoever replaced it should cover it. Do you see an residual oil near it? or on the ground when its wet and you pull out of your parking space? Hope this helps!

May 04, 2011 | 1999 Ford Explorer

2 Answers

First thing in the (cold) mornings heater wont work. water gauge flux's up and down weird . then about 20 mins into driving its warms up

Your engine coolant is what your heater gets the heat from. You need to start your car and let it warm up for awhile before any heat will come. This is how most cars heaters work. Yours sounds like it is working fine; most cars take a little while to warm up.

Hope this helps!

Dec 07, 2009 | 1992 Toyota Paseo

2 Answers

99 Chrysler 300M gas gauge droping down to empty

you are going to have to replace the sending unit for the gas gauge, it is located in the fuel tank.

Jul 20, 2009 | 1999 Chrysler 300M

1 Answer

Fuel gauge dont work

the sender in the tank needs to be replaced -- mine does the same thing. take it into a shop and tell them that your gas gauge fluxes and they will drop the tank and replace the sender. until then, watch your mileage.

Jul 22, 2008 | 1999 Pontiac Grand Am GT

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