Question about Demio DW5W Genuine front Grill

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Hi My 1999 Mazda demio has run faultlessly until today. It now cranks over but wont start. I had a friend toe me home and it started. I drove home, but again the car wont start.

I don't know if its related but about a week ago the needle on the fuel gauge has started to jump around and not remain static.

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Could be fuel pump or fuel filter. Try the filters first as they are less costly and often less difficult to access

Posted on Nov 29, 2014

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Sounds like a bad fuel pump or you need gas.

Posted on Nov 29, 2014

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1 Answer

What would cause temperature gauge bouncing ?


Sounds like the sending unit has an intermittent short to ground. Unhook the the wire from the sending unit, and see if the needle stops jumping around. If it quits jumping around, replace the sending unit. If it still jumps around, you have a bare spot somewhere on the wire and it is hitting ground which will cause the needle to jump. Cut out the bad part of the wire and splice in a new section. That should fix it.

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When jackaroo 1988 is motoring where does the needle in the temperature gauge normally be


If your temp gauge has only the cold (C) or hot (H) letters then the operating range would be the width of the needle under 1/2 way between c and h. If it remains steady at slightly over 1/2 way that would be just the setting of the gauge. How to get to know where the needle would sit at a specific position in relation to water temp. Do the following
Remove the temp sender unit and attach an earth wire to the body of the unit to earth. Place the sender unit in a container of water up to the threads .Put a mercury thermometer in the container beside the sender unit Apply heat to the container and watch the gauge needle move in relation to the thermometer reading. Operating temp will be about 80 degrees C on the thermometer and that would be about 1/2 way on the gauge.

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Testing fuel sending unit on ferrari 550 maranello


What is the fuel gauge doing? The sender is easily ID as the problem by symptom analysis. Needle stays in one place or reads incorrectly, sending unit, needle jumps around while driving sending unit.

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The fuel needle is broke, I bought the 97 Lesabre two days ago on a full tank of gas...how many miles can I get out of a full tank


The fuel gauge needle isn't the problem the fuel gauge sending unit inside the gas tank is the cause of this problem, it is not sending a signal to the gauge
As far as how many miles you can go that would be around 300 mixed city and highway most likely.

Aug 24, 2011 | Buick LeSabre Cars & Trucks

1 Answer

Just bought a 95 z 28 its all ready had k&n cold air intake, phantom air to fuel ratio, and vacuum gauges and a port to plug a lap top into so i was told, the air to fuel ratio gauge is showin its...


Cheap air/fuel gauges simply tap off the stock oxygen sensor. That sensor can only tell you lean or rich and the car should idle roughly at 14.7:1 and go rich under acceleration. Cruise down the highway at steady 50 mph and see what the gauge does. Should be calmer.
At idle the needle can bounce around quite a bit. Means nothing. It should however go sometimes rich and sometimes lean. That's how the computer adjusts, if it stays lean too long, the computer tweaks the injectors richer. If it stays rich too long, the computer tweaks it leaner. If the computer cannot adjust the ratio, it will set the check engine light and in that case it should be a flashing check engine (meaning stop the car and tow it to a shop - flash means the catalytic converter can burn out).
If you want to know the actual air-fuel ration you need to buy a wide/band oxygen sensor and related gauge. They are much more expensive and will typically run a few hundred dollars. If the car is stock except for K&N, don't bother with the air/fuel gauge.
As for computer hookup. Go read up about "LT1Edit". Don't buy the software (too expensive for a stock car) but you'll understand what software is out there to monitor your engine (and what hardware you need to buy in order for your laptop to talk to your car).

Apr 16, 2011 | 1995 Chevrolet Camaro

3 Answers

Temp gauge needle keep jumping in the red.


Temperature sensor may need to be checked or replaced.

Jul 17, 2009 | 1995 Chevrolet Impala

1 Answer

Fuel gage on 2005 altima is way beyond full. Does


It is either the sending unit in the gas tank or the dashboard gauge, either job poses its own challenges take your pick. If it is the gauge if you were lucky in a couple of weeks it will become unstuck in to pegged out position but that is only if it is a mechanical issue with the needle itself wedged in place.

Jul 12, 2009 | 2005 Nissan Altima

2 Answers

Fuel Gauge spun around in opposite direction. The electronic display still shows the mileage remaining. What could the problem be???


It will take about 30 min to fix. Well that's how long it took me to reapair my 2006 SL. First remove the 3 screws from the shroud around your column they are under your column. Make sure your column is extended and in its lowest position. Second remove the 3 trim pieces on top of the cluster by using a flat blade screwdriver be careful not to damage your dash. Third remove the single screw on top of the cluster and the two that are underneath. Fourth release the tabs that hold the bezel around your cluster. Fifth each lens can then be removed exposing the gauge face and needles. Sixth gently move the needle counter clockwise until it rest on top of the needle stop. Seventh try to remember how it all goes back together haha. No really it is a piece of cake 30 to 40 min versus the 2 hour quote from my local Nissan dealer.

May 19, 2009 | 2006 Nissan Maxima

1 Answer

2000 Chevy blazer this is the 2nd brand new fuel pump I've replaced in 2 weeks,It runs a hour or two, Then sitting all night won't work in the morning.Same thing the first time . I've checked fuse ,...


Spark......EQUIPMENT NEEDED: 1) fuel pressure Gage....Advanced Auto = $45..... 2) needle nose pliers ( fuse pull )..
There is a fuel pressure access valve located on the fuel injector rail. The access port or "shraider" valve has a black or gray screw on cap. Remove the cap and you will see the valve. CAUTION: The fuel rail is under pressure....before installing the pressure gauge, relieve pressure by starting the engine and removing the fuel pump fuse from the under hood fuse box......
Once the engine quits, turn the key to the off position and safely install the pressure gauge. Put a rag around or under the access valve to catch any drizzling fuel. I always prefer to do this when the engine is cool.
Install the pressure gauge, start the engine, check for leaks and read pressure output at idle, record pressure reading.
Also, it should be checked under load but you will need another person to help.
Once you have shut the vehicle off watch the pressure gauge, it should remain steady and not leak down.
Let me know what the readings are.
Regards,

Feb 13, 2009 | 2000 Chevrolet Blazer

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