Question about 2001 Volvo S40

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Engine acceleration I was setting at a red light and my 2001 Volvo s40 started to accelerate, I had to apply both feet to the brakes until I could pull over. I had it towed home and started the engine again, For approx. two minutes it seemed fine then the engine started again? I turned off the ignition and haven't started it since.

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  • Volvo Master
  • 19,396 Answers

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.

Posted on May 09, 2009

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Posted on Jan 02, 2017

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1 Answer

My Volvo s40 2.0,2007 can't accelerate more than 60km/h even when accelerator pedal is fully pressed,what can be the problem?


Probably that's a limp mode.
You can start with checking hidden menu, then most likely visit Volvo dealer or other garage.

Sep 24, 2015 | Volvo Cars & Trucks

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2001 Volvo S40 transmission


your engine mounts are broken plus your trans is going out

Jul 15, 2012 | Volvo S40 Cars & Trucks

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During up-hill movement the car lacks power to accelerate. However on plain ground it functions well. Just up-hill it struggles to accelerate and makes unnecessary noise trying to move up-hill. it is a...


Hey, maybe the engine is just too small for big hill's :) but u can try to chance air filter and fuel filter and overlook the spark plugs (when it's a petrol engine)

May 16, 2011 | 2000 Volvo S40

1 Answer

Lately the brake light comes on for no apparent reason. Sometimes, it is right after a red light, & I've just accelerated. Any clue? Thanks!


Check the fluid level in the brake fluid reservoir (master cylinder). A slightly low level will set the light off as the fluid is being rushed backward during acceleration. When this fluid is rushed back, the level of fluid is probably dipping below the desired level therefore setting the light off.

Oct 01, 2010 | 2000 Volvo S40

1 Answer

Brake light switch on 2001 volvo s40=my brake lights work sometimes and don't work sometimes. I have checked all fuses and bulbs. I have tried fiddling with the brake light switch and can make the brake...


Yes switch is the problem. Volvo claim they sell very few switches, probably because people bought new cars instead. Problem can be associated with failed ignition coils (2 of) but one does not cause the other but very confusing. Engine fails intermittently or conks out.
Reset battery earth connection on chassis bad design here. Clean off paint and thread also bolt coating. Even better, use brass bolt but do not overtighten. Volvo will try to get you to replace alternator which is not necessary.
Failing battery will light up all the warning lights but will not isolate the battery so if it shorts car will die and not run on alternator. If this happens disconnect battery until you get to garage.
Now you know you can buy an old S40 with confidence great car and very cheap for what you get.

May 14, 2010 | 1991 Volvo 740

1 Answer

Car accelerating on it's own


you have problem with idle air control valve and you have to scan for check engine light fault codes

Aug 18, 2009 | 2001 Volvo S40

1 Answer

My 2001 volvo s40 shakes when I accelerate past 30 mph


it could be a motor mount check the condition of it or it can be that something with the suspension might need attention . . those things can cause vibration at certain speeds

Jun 08, 2009 | 2001 Volvo S40

1 Answer

Flashing upside down arrow/ slow acceleration


This is a common problem of Volvo S40. You can try this trick to turn off the flashing arrow light.

1) Turn off Engine
2) Turn key to "On" position (Not start the engine), you will see the panel light will on
3) Step on the break paddle
4) Shift the gear from "P" to "L" 10 times
5) Turn key to " Off" position
6) Now you can start the engine.
7) If doesn't work, you can repeat the procedure.

Hope this tick help
Good luck

Jun 02, 2009 | 2000 Volvo S40

1 Answer

Suspension System problems


clanging on rough roads\
Ck exhaust pipe securements and clearances from body. huge o rings are used to suspend exhast and sometimes break and fall off.. Good luck
vibrabration on uphill acceleration
chk motor mounts by holding brake and accelerating
Sway bars seldldom are a problem unless mounting bushings are worn resal bad

May 07, 2009 | 2000 Volvo S40

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