Question about 1990 Volvo 740

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Need a schematc diagram of the electrical wiring sysdtem and fuel schematic diagram for volvo 740gl

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  • hotcars101 Sep 10, 2008

    need a schematic for fuel pump circuit. I have no power feeding fuel pump ( recently replaced fuel pump ) any help ?

  • hotcars101 Sep 10, 2008

    replaced fuel pump and still have a no start situation, no power coming to the pump with key on and in start position. good fuses, think I could use a wirin diagram

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Www.ipdusa.com sells the correct shop manual for the car. It is only available in the British publication, so you will need to look up metric conversion formulas, which are quite easy. I have this book, so you know.

Posted on Oct 02, 2008

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Jan 18, 2016 | 1993 Pontiac Trans Sport

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I am trying to figure out what the orange light bulb means in the dashboard of a 1990 volvo 740gl?


Sorry, I just notice the year & model. If all the lights are working, you could have a bad ground connection or the bulb integrity relay is defective. You will have to get the wiring checked with a test light or volt meter to see where the problem is.

Oct 18, 2011 | 1990 Volvo 740

1 Answer

I own a 1989 740GL.The engine is the standard "


Wait - you said it has no spark, and then started asking about fuel injector relays. I am confused.
When you crank the engine, do the spark plugs spark? If not, the most likely problem is the trigger mechanism. The '89 740 used a sensor in the bell housing detecting flywheel position. This car is about due for its third sensor as the insulation on those things tends to degrade and need replacement every decade or so. If you are still on your original sensor, you have been very lucky to make it this far.
Find the person with the smallest hands you can find to help you replace that sensor and be careful not to drop the bolt down in to the hole where the sensor comes out. Also, if the sensor is rusted in place, be patient. Don't break it off in the hole.
If you are not getting fuel, you will not hear the fuel pump spin up for a second when you turn the key to the on position. You should be able to bypass the fuel pump relay using a paperclip at the fuse box. Just find the fuel pump fuse and power it from an other fuse. If that spins up the fuel pump and starts the car, then you have to worry about finding the fuel pump relay. I can't help with that because I have never needed to find it on a 740.

Mar 05, 2011 | 1989 Volvo 740

1 Answer

I need to know where to jack up a 740GL Volvo and where to place the car stand to do an oil change.


Always jack a car by the frame. Also put the jack stands on the frame.

Nov 12, 2009 | 1989 Volvo 740

1 Answer

I need to know what each color means on my distributor???


Review this guide as reference; this Electrical Schematic Diagram applies for 1994 Accord Coupe series of model. Here you will find complete explanation about electrical system of the vehicle. Started from Troubleshooting (tips and precautions) on handling the electrical system, in this manual you will be guided step by step examining each electrical component installed and its connection for example in Wire Harness and Ground Location, started from Engine Compartment, wiring harness is shown from engine ground cable, starter cable, and battery ground cable.

These 359 pages of pdf.fieltype manual is divided into some sections which are Wire Color Code, Relay and Control Unit Location, Wire Harness and Ground Location, Air Conditioning System Circuit, Anti-lock Brake System, Battery, Blower Control, Charging System, Cruise Control, Fan Control, Fuel Pump, Fuses, Ground Distribution, Heater Control, Ignition System Control, Lighting System, and etc.
Download the complete 1994 Accord Coupe Electrical Schematic Diagram here.

You can also find complete workshop manual of 1994 Accord Coupe here.

Pass: freepdfmanual.com

Good luck.

Sep 21, 2009 | 1997 Honda Accord

1 Answer

After driving around on a hot day, my 1989 Volvo 740GL will not start back up. The engine trys to turnover, however. The fluids do not over heat, but I have to wait until later in the day when it's cool to...


Sounds like it could be vapor locking. Especially if it starts after it gets cool. Try adding a can of octane booster to the fuel next time you fill up and see if that helps.

Jul 06, 2009 | 1989 Volvo 740

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