Question about 1991 Volvo 740

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No spark i have a 91 volvo 740 4 cylinder sedan i have no spark from the coil which gos to the distribulator, i changed the coil and the modual and still no spark, i also swaped the 2 blk relays on the shock tower and still no spark, i can see both relays pul in at the same time, i also noticed that the fuel pump isnt comeing on when i try to start it, i did check the fuses and number 11 which is for the intank fuel pump is not blown or open but i have no power from the fuse i check it 20 times, can you or someone plz help im getting frustrated ty

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If it is a REX ignition system, check the crankshaft sensor wire. You can run your hand on it and feel to see if the wire sheathing is broken.

Posted on Aug 11, 2012

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Replace your fuel pump relay.

Posted on Jun 21, 2009


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1 Answer

1991 Volvo 740 has no fire to no.2 cylinder. Checked plugs, wires, cap,rotor

Hi,can you give me more information,how have you checked the plugs leads etc ?
have you tried swapping spark plug 2 with 3,if the non fire moves to cylinder 3 then I would change that plug (it would be better to change all the plugs and gap them)

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Driving my 91 volvo 740 and it will stall then wait acouple of min. starts right up why

In my experience this has been one of two things. The first and most common is a faulty fuel pump relay. (located above the fuse panel behind the ashtray) or a short somewhere in the coil/ignition system.

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Let me know if this helped...or if you have additional information of questions. Feel Free to contact me at FixYa.Com!

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1990 volvo 740 GL no fire or fuel

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Jun 29, 2009 | 1990 Volvo 740

1 Answer

Volvo 740(1990) i replaced my coil and change the battery, it started, then went 50 yards the it died and now it just turns over, but won`t start, is there anything else it could be? thanks

Many things can cause this on your 740. Fuel pump, fuel pump relay, rpm sensor, MAF sensor, radio suppression relay. I've never seen the coil fail on these era Volvo's, ever. And I've diagnosed at least 50 of these with stalling problems. Check the codes, and when it wont start, check for spark and fuel pressure, you're likely missing one of them.

Feb 25, 2009 | 1990 Volvo 740

1 Answer

No spark

On some of these the black relay on the shock tower supplies power to the coil, and the relay can fail. Swap it with the black coil on the other shock tower, they are the same.

The ignition power stage fails, and especially the rpm sensor. Have you checked the trouble codes?


Nov 30, 2008 | 1982 Volvo 240 Series

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