Question about 2008 Volvo S40

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Volvo s40 flexifuel 1.8 engine. computer engine fault no c322 ECU ROM checksum error/permanent. what does that mean?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: volvo s40 1998 bulb warning light on, what does

If by that you mean:

"warning light goes on when I start the motor, and goes off after first time I use the brake pedal"

, don't worry, it's normal, it's how it work. If it stays on even after the use of brakes, you have a bad bulb on brake tail lamps

Posted on Apr 09, 2009

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SOURCE: Missing Fuses, Volvo S40

Where is the fuse located for the 12 volt accessory plug in the front passenger compartment?

Posted on Jul 03, 2009

  • 580 Answers

SOURCE: 2001 volvo s440 1.9t

Volvo Radiator, Thermostat and Sensors Your cooling system's temperature controls include all coolant temperature sensors, Volvo thermostat, Volvo radiator or expansion tank cap, cooling fan(s) and fan clutch (if equipped). These cooling system parts function primarily independent of the engine but control the engine either through cooling or by sending control signals to your Volvo's electronic systems.
The Volvo thermostat is a spring-loaded valve that opens and closes based on the temperature of the coolant flowing through it. A high temperature reading followed by a drop to normal temperature (or a continuously low temperature) is a common first sign of a sticking Volvo thermostat. However, many other conditions may cause these symptoms, so you need to know how to eliminate each possibility.
The Volvo radiator or expansion tank cap is also a spring-loaded valve reacting to system pressure. It serves to maintain proper system coolant level at predetermined pressures. It must always be replaced with an exact replacement cap with the same pressure setting. Never use other caps except for short-term emergencies!
A belt-driven fan blade for pulling air through the Volvo radiator is usually on the Volvo water pump pulley and should have a fan clutch to control it. The fan clutch allows the fan to turn with the belt at low engine speed and "free-wheel" at higher speeds. A bad fan clutch either doesn't allow the fan to spin at low speed (overheating in traffic) or doesn't allow it to free-wheel at high speed (potential overheating on highway or reduced gas mileage).
An electric fan can be either by itself (usually front-wheel drive) or auxiliary (used with a mechanical fan). Both types are controlled via a temperature sensor - in the Volvo radiator or upper Volvo radiator hose or on the Volvo thermostat or Volvo water pump housing. This sensor is usually an on/off type switch with a fixed temperature setting. (Some vehicles may have 2-3 settings for multi-speed fans.) This sensor is commonly called an "auxilliary fan switch".
Other common temperature sensors are: 1) gauge sender (variable output); 2) warning light sender (on/off type); 3) lambda and/or fuel injection sensor(s) (variable to control fuel injection settings); 4) thermo-time switch (cold start valve control). Your Volvo may have other sensors as well.
Temperature control is critical to both performance and emission control. Unfortunately, this system is the most difficult to troubleshoot without proper equipment and diagrams. It's even more difficult with computers that adjust timing, idle speed, vacuum and fuel delivery automatically to make up for potentially faulty temperature sensor signals.
Maintenance of your cooling system sensors is virtually impossible since there's nothing really to "maintain". Keeping them clean both internally (coolant replacement) and externally (engine cleaning) is the best way to ensure trouble-free driving. Checking and replacing all parts at the factory-recommended time or mileage limits helps as well

Posted on Jul 23, 2009

REDOIL
  • 355 Answers

SOURCE: 2002 Volvo S60 with Engine fault codes

THE 445 IS THE EVAP PURGE VALVE IT MAY BE BAD BOTH 446 IS SAME VAVLE YOU NEED TO SEE IF THE HOSE ARE GOOD ON THIS VAVLE MAKE SHERE NO CRACKS IF NOT PULL HOSES AND SEE IF SOMTHING IN VAVLE ITS NEAR THE CANSTER AND THAT IS NEAR THE GAS TANK UNDER CAR PUT CHECK GAS CAP MAKE SHERE ITS TIGHT HOPE THIS HELPS

Posted on Sep 15, 2009

  • 234 Answers

SOURCE: engine management light

is there plenty oil in it my v70 kept doing it and tuned out oil when running was low

Posted on Nov 01, 2009

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1 Answer

My engine light stays one. What is the cause


You need to have your problem fixed, if already fixed and engine still stays on then, you need to have the error code deleted on the ECU (electronic computer unit).

You can do this with a ODB port reader if you have one or have it done in a workshop.

Mar 30, 2015 | 2006 Volvo S40

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Where is the ecu located? 2000 Volvo S40


An engine control unit (ECU), also known as power-train control module (PCM), or engine control module (ECM) is a type of electronic control unit that determines the amount of fuel, ignition timing and other parameters an internal combustion engine needs to keep running. It does this by reading values from multidimensional performance maps (so called LUTs), using input values (e.g. engine speed) calculated from signals coming from sensor devices monitoring the engine.

Nov 30, 2010 | 2000 Volvo S40

1 Answer

1998 VOLVO S70 INTERMITTENT CHECK ENGINE LIGHT, GOES OFF COMES ON NO EMISSION CODES


intermittent engine codes are not serious and it just indicates that one or more of the sensors is reporting a bad signal..at what ever time intervals.....this just means that as you drive , bad connections develops as a result of the movement for a second or long enough for the computer to detect a fault and then it goes back to normal....you can check for bad connections yourself by wiggling the wires with engine running and see if the light comes on ..which will tell you where the bad connection is and then fix it yourself or just wait until the connection gets really bad and the engine light stays on permanently .the computer will then store the code thats causing the fault and you'll know exactly where it's coming from.

silvio

Jul 08, 2009 | 2000 Volvo S40

1 Answer

Engine acceleration


Causes for the car accelerating on its own are:

The cable under the hood that operates the gas is getting stuck.

Throttle pedal stuck.

Idle air control valve faulty.

There is a large vacuum leak.

ECU car computer is faulty.

The most common is the IAC, the repair is not expensive, but the car cannot be driven in this conditions.

Regards.

May 09, 2009 | 2001 Volvo S40

1 Answer

Dodge Durango 1999


I have a 99 dodge 1500 that had the exact same problem. It was the speed sensor on the rear end mounted on the top side near the pinion gear. It is an easy repacement part. After removing the retainer and wire clip it pulls out.

Mar 18, 2009 | 1999 Dodge Durango

2 Answers

Engine management light volvo s40 problem


The best thing is to go to your local Volvo maintenance shop or Volvo experts to find out whats the problem..usually the coomon ones I think is the programs inside its ECU unit..you try this..ask the volvo experts to reset the ECU and lets see..if problem arise then it is no doubt you might need the sensor..hope this help..

Jul 24, 2008 | 2000 Volvo S40

1 Answer

Engine management light volvo s40 problem


sounds like thats correct. fault camshaft position sensor or wiring to ecm is prob

May 14, 2017 | 2000 Volvo S40

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