20 Most Recent 1986 Volvo 760 - Page 2 Questions & Answers

simple pour coka a cola on the plugs then sand wipe with sand paper let dry then try

Volvo 760 Cars &... | Answered on Aug 17, 2012

You probably have either a bad tach or a bad wire connection. The wiring of the tach is very simple - there are really only three leads to deal with:

1. 12v positive from ignition - may be a red wire, goes to switched side of ignition switch to provide 12v when the key is on.
2. Ground - goes to ground - usually black wire
3. Tach sense - goes to the ignition - usually grey wire
4. Light - there is probably another pole for an internal light - this would go to the nav/dash light circuit to pick up 12v when the lights are on. It would have no effect on the operation of the tach.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Volvo 760 Cars &... | Answered on Dec 14, 2011

some cars dont go by timing marks to set distributer you will have to make sure of the way your car gets set the best way is too pull number one spark plug put finger on hole have some turn engine with wrench until you fell compresion then get the piston all the way to the top then check were its at then if its still 180 out then pull it and put in right place only if you feel you can go into it that far

Volvo 760 Cars &... | Answered on Feb 10, 2011

Thats possible but not as likly as the intake gasket being failed or next the head gaskets or cracked heads. Freezing without enough antifrezze is a cause for a leak down lower but it's possible if your right theirs crakes in othe parts too that you won't notice over the bigger leak or not full enough.to see the other leaks cyclinder linder leaks can almosr anlways be fixed with sop leak raditor additive and don't for get to change the oil as oil with coolant in it won't lube the engine parts well enough and it'll tear the whole engine up. If you've got it all the way down the orginal replacement gaskets are fine they just gave up over not having the coolant changed on a regular bacis. If you thing about it 78 was a long time ago and if you fix it now will it be running in 2047 for you to do it again? Sure O rings would be nice like road tractors use on the big cats, but this is a car, stock will be fine.

Volvo 760 Cars &... | Answered on Jan 28, 2011

Its easy enough to check for spark but how are you checking that you are really getting gas. Are the spark plugs new. If so the check that you have the right ones. It is not uncommon for a parts guy to give you the wrong plugs . If the plugs are not new and the car was running fine with those plugs before all this happened and the plugs look fine now, no bad, black carbon deposits then lets move on . Did you just put gas in the car. sometimes you can get a load of bad gas, I mean water in the gas when I say bad. Been lots of rain lately and this does happen. Pull the plugs on the car and spray some starter fluid down the cylenders. Replace the plugs and turn the engine over. If it fire up for a second or two and then quits, I would start looking at the fuel system. The fuel solinoid relay, which would supply power to the fuel pump could be a problem. Be sure you are getting fuel in the cylenders.

Volvo 760 Cars &... | Answered on Sep 18, 2010

Not being aware of maintenence of your vehicle, I can only give you some typical things that may cause this. Fuel relates issues,
The LH fuel system is characterized by the following:
  • Measurement of intake air through the air mass meter of the hot wire type
  • Use of a separate cold start valve that supplies extra fuel, at or below 60F (16C)
  • Knock controlled fuel enrichment system
  • Engine speed taken from an inductive transmitter on the flywheel
  • Lambda probe (oxygen sensor) providing oxygen content of the exhaust gases
  • EVAP system to minimize evaporation from the fuel tank
  • Three-way catalytic converter Several sensors feed the control unit information to precisely control fuel injection. To accomplish this, the control unit evaluates: exhaust gas oxygen content from the oxygen sensor (Lambda-sond), engine RPM and crankshaft position information from the ignition system control unit (if information is not received, the fuel system control unit will not function), engine temperature from the coolant temperature sensor, engine load information from the air mass meter, information from the throttle switch, which indicates if the throttle is closed or wide open, electrical system voltage from the battery current and signals from the A/C switch and clutch, indicating whether they are operating.
  • Also there is the actual ignition system to check out.Do you have good spark at all of your plugs and what condition are your plugs.
  • Fuel pressure plays a big role although there sensors involved after correct pressure is met to determine proper fuel injected.
  • If you would like more information pertaining to sensor parameters please let me know.
  • Volvo 760 Cars &... | Answered on Dec 01, 2009

    If you have a local library card you can access the Chilton DATA Base for free, you should be able to view the wiring diagram there.

    Volvo Cars &... | Answered on Dec 23, 2020

    Ok, great question.

    P113500 Crankcase pressure too high relative to atmospheric pressure.

    Volvo Cars &... | Answered on Dec 09, 2020

    P225E00 - nox sensor performance - signal stuck high bank 1 sensor 2

    Volvo Cars &... | Answered on Dec 07, 2020

    I'm having this same issues you ever find out what it was

    Volvo Cars &... | Answered on Nov 15, 2020

    An auto parts supplier would know.

    Volvo Cars &... | Answered on Nov 11, 2020

    Not sure of what a 440 series is. 240 or 740 maybe?

    Volvo Cars &... | Answered on Oct 22, 2020

    The Volvo XC90's fuel pump relay is in the tank.

    Volvo Cars &... | Answered on Oct 19, 2020

    have Volvo run the fault codes
    indicates fuel starvation or fuel control module problems

    Volvo Cars &... | Answered on Aug 04, 2020

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