Having problems with your 2000 Volvo S40 ?

I have a 2000 Volvo S40. A few days ago it began automatically accelerating while driving. I took my foot off the gas and the car took off as the tach got close to 4000 rpm I shifted into neutral and pulled over. I had to shut the engine off. The car would not restart. I let it cool down and after a few hours I was able to drive it home. This just started happening and the check engine light is on.

Posted / edited by AnonymousUser on : 15-01-2018

Answers :

I believe it's most likely the Idle Air Control Valve, also known as\015\012the IAC valve. This is what regulates the air intake on a car when your\015\012foot is not on the pedal. Valve should be under the black plastic cover on the front right corner on the engine. Remove the cover and remove the valve. Then clean the valve, gasket seal (may need to replace the gasket) and electrical connections\015\012to it with a Mass Air Flow Sensor Cleaner (or another non-abrasive\015\012cleaner) and reconnect everything. If the cleaning doesn't do the trick, then you may have to replace the IAC valve altogether.

Since you said the check engine light is on, you can\015\012have your car computer scanned to retrieve the code that\015\012the computer would have stored when the light triggered. Most garages\015\012will do this free of charge. The code will tell you what may have\015\012caused the light to initially turn on.
Repair Help & Product Troubleshooting for 2000 Volvo S40

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

I have a 2000 Volvo S40. A few days ago it began automatically accelerating while driving. I took my foot off the gas and the car took off as the tach got close to 4000 rpm I shifted into neutral and pulled over. I had to shut the engine off. The car would not restart. I let it cool down and after a few hours I was able to drive it home. This just started happening and the check engine light is on.


I believe it's most likely the Idle Air Control Valve, also known as\015\012the IAC valve. This is what regulates the air intake on a car when your\015\012foot is not on the pedal. Valve should be under the black plastic cover on the front right corn ... 2000 Volvo S40

1996 cavilier 2.2L engine, 2 door coupe. Three weeks ago engine stalled out and would not restart until it cooled off for about 30 minutes. It then restarted and ran with full power and performance but had a plug wire arching. I changed the plugs and wires and the car ran great for three weeks. Now it won't run after it reaches full operating temprature. If you let it cool off for about 30 to 60 minutes you can drive it with no problem, full power and performance until it warms up again then it


Check the spark went is not working some times the crank sensor fails went is hot ... Chevrolet Cavalier

I have a 2007 Ford Escape Hybrid. The car shut down and said "stop safely now". I was able to restart it and drive home. Then it happened again, noticed this would happen after driving 45min or so. The 2nd time it happened it also said "engine temp overheating". We could not smell, see or hear anything one usually would with overheating. Took it to Ford service. $703 for Auxiliary Motor to help keep the HV battery cool, $30 for a new HV Filter, they recommended a new engine battery to at the co


... 2007 Ford Escape Hybrid FWD

About a year ago I took my '01 Miata into the dealer for a stalling problem. The car would lose power and die in traffic and the check engine light would come on. After about five minutes it could be restarted and driven home. The dealer had the car for six weeks and he replaced the crankshaft sensor. First time I took the car out it stalled again. The problem occurs on really hot days or when climbing the a really steep grade.


The most likely problem is the cam sensor in you valve cover. we see this all the time here in Florida. once the sensor heats up it fails and starts working again when it cools off. try replacing it with on from the dealer and you should have no more ... 2001 Mazda MX-5 Miata

Honda Accord 2000 lx V6 3.0 engine. Car starts and runs for awhile then at idle it will shut off. Attempts to restart gets cranking of engine but does not start. Seems like fuel starvation. Let engine cool off 10-15 minutes car will restart and run for a while again. Seems like vapor lock of the fuel pump. If this is what you believe to be the situation. How is the best way to replace the fuel pump? Is it located in the gas tank and if so is the access panel under the rear seat or in the t


The relay can be tested using a voltmeter to read volts out, if it does not switch power to the fuel pump , then the relay is faulty.A general test can also be done reading volts at fuel pump connectors.Instead of testing the ... Honda Accord

2000 Toyota Camry 4cyl. While driving, car stalled would not start. Engine turns over but rough. Towed home, backed into driveway, car started and seemed to run fine, within 3-5 min, the engine started to labor, stalled and would not start. Let cool for awhile and started ok, then same cycle.


... 2000 Toyota Camry

2006 Chevy Impala LTZ over 100K miles. Had oil changed about 2 weeks prior to onset of problems. Oil change shop neglected to replace cap on top of motor. While driving about 40 mph, car shut off. Computer read service traction control and check engine light came on. Attempted to restart car...to no avail. Car began shaking violently and would not stay on. Took car to dealership who did not put car on diagnostic machine but indicated I needed a new engine or a new car. Quoted 6k for repairs. Ind


First, you forgot to mention whether your vehicle is equipped with the 3.5L, the 3.9L, or the 5.3L engine. Not that it really matters at this point, but when you are asking about engine problems, it usually helps a BUNCH to know what ty ... 2006 Chevrolet Impala

After driving on highway for a few hours car died when stopping to get gas. When we tried to restart the car the engine idle went way up then would die. Let sit over night and the car started ok. In the morning drove 5 more hours and stopped for gas again and the car died once more. The car is my daughters friend and they are headed back from Florida.My first thoughts would be fuel pump, coil pack, or computer. Anyone have this problem before on a 2003 v-6 grand am.


How is the alternator on the car? That is what holds the charge to the battery. ... 2003 Pontiac Grand Am

Car started and idle, when I would press on gas pedel the engine would stall. Let up on gas and engine would idle, but it sounded like it was running on 3 or 4 cylinders. Pressed on gas again engine would stall again and let up on gas the engine would idle roughly, when I let it idle the engine reduced in RPMs and then stopped. It would not start again. So I left the car for about hour, tried to start it and it started right up. It had a rough idle pressed on the gas the engine stalled I let up


... Ford Taurus

2004 pontiac grand am se. It seems like i drive long distances and turn off the car it refuses to start back up immediately.If I wait 90 minutes and the engine cools completely then it restarts pronto. Yesterday the car died in motion but restarted after i hour had passed, so i had to dismiss the tow truck.this morning the car would not start at all. but by the time i had it towed to the mechanic it was working.


Crack head sounds like\012do a pressure check ... 2004 Pontiac Grand Am

ENGINE WON'T RESTART AFTER RUNNING NORMAL. Engine will restart when you let cool down. Fuel rail pressure is 46 psi when not starting (hot) and 50 psi when running (cold). I replaced the fuel pump. I took the pressure tester back and did not test new pump pressure.(I know) Engine cranks normal. I don't think it's a ignition problem but could be wrong. HELP!!!


Auto choke problem ,try changing the temperature sensor ... 2003 Dodge Durango

I took my 2002 kia on a 1000 mile trip. The engine got hot so I turned off the air conditioning and it cooled to normal operating temperatures. I drove it with no problems except not being able to run the air conditioner for approximately 300 miles. Then the engine would overheat if I was not running 60 mph. The problem became steadily worse so that by the time I was returning home the car had no power and the engine would run hot going up hills.


Aircon electric fans not working ... 2002 Kia Sportage

The Chrysler Crossfire is a nice "looking" vehicle but I've had an issues that my engine would shutdown without warning. The car would restart upwards to about 2 hours later but would shutdown again several miles later. Took it to the dealership THREE times and they have not been able to sort it out. i am now unable to use the car.


It is a bad solder joint in the RCM (Relay Control Module). Have the dealer replace the module and you should be fine. This is a known problem. ... 2005 Chrysler Crossfire

My car would run a little hot when you would turn ac on after about 10 min but would come back down now it ran hot with no ac on and i notice fan wasnt working i turned car off and let it cool and took off again and now fan works and is ok but still a problem when you turn ac on can you help


The Radiator May be Getting Stopped up I Would Need To Be Rodded Out If So Or Could be Thermostat Not Opening Up All The Way I Would Check Therostat First Before Going The Route Of Pulling The Radiator ... 2003 Ford ZX2

1990 grand prix 3.1 car originally stumbled when transitioning from acceleration to cruise and would stutter real bad, I had to either punch through it or let off the accel. and come back on it slowly. Then while driving fast down the freeway the car lost engine power but was still running could control steering just no power. Stopped and tried to restart etc.. would start and idle rough then just die upon accel.. Came back approx. 18 hours later and she started fine and ran good, not much stutt


... 1995 Volkswagen Jetta

I change the idle air control valve on my 2000 nissan maxima and took it to the dealer to have it relearn and the dealer told me it would nt let them relearn the sensor so latter they told me it needed the sensor and the engine control module now the car is worst then when i took it to the dealer now i turn the car off and take the key out and the lights in the dash and radiator fan come on for like ten secons and then it all goes off please help me


Check the radiator fan relay.this relay ground is connected to ECM.It controls this relay.as you mentioned about engine control module.So it can be the problem with relay or ECm not controlling this relay, and this causes the radiator fan to come on. ... Nissan Maxima

I was driving my 2000 Honda Civic to work and all was well with it. However, as I started it up to drive home, the dreaded Check Engine light came on. I bought a new O2 sensor, and installed it, but the check engine light stayed on. I took the battery off, let it stay off for a minute, and then put it back on. I restarted the car, the light went away, I drove for an hour, and the light stayed off. However, I turned my car on this morning, and lo-and-behold the light came back on. In additio


Start by waiting overnight (until the engine is stone cold), then remove\015\012 the radiator cap and top off the radiator. Fill the reservoir to at least \015\012the\015\012minimum line. Run the car until it's at Normal Operating Temperature, ... 2000 Honda Civic

I have a 1997 Plymouth Grand Voyager. Trouble started when I stopped at a stop light. When it turned green I continued but had no power at all felt like engine was under stress. I could not exceed 10 mph even if I accelerated. I pulled over and turned the car off. I tried to restart it again after the engine had cooled but it would not turn over. The battery was strong but just wouldn?t turn over. The car was running fine up to this point, what could it be? Could it be a sensor of some t


... 1997 Plymouth Grand Voyager

For the last few years the dash unit would flash leds, or not let you switch from circulate to fresh air. If the system was on heat when you turned the car on it would not go to cold when the thermostat was turned to the blue zone. The only way to get it to go cold was to shut off the engine, turn it to the cold zone and restart the engine. I could live with this, now it will only blow lukewarm air. I am thinking it is the dash unit, thoughts?


This control head can be tested for proper function by any Chevy dealer, as the control head is around $400.00 I suggest you do that, the problem is most likely the head unit based on my experience with this type of problem, but there is no guarantee ... 2001 Chevrolet Tahoe

The car is at the dealership for a starting problem. The car hadn't been runnning for several months because my son was at college and he left the car at home. We tried to start it yesterday and had to 1st jump the car to start it. It would run for a few minutes and then die. At that point we couldn't restart the engine. However, if we let it sit for an hour or 2 we could then do the same thing again. The dealer service says that the problem they found is that water got into the carpet areas


Ask them to show you the water damage. don't warn them you want to see it wait till you are at the shop. i'm willing to bet they say you need a new computer which of course is very expensive. ... 1999 Volkswagen Passat

I drove my camaro for about twenty miles on the highway, and when I got close to my destination it stalled. When i restarted it, it would putter when I tried to accelerate and then would die. I let it cool down for 3 hours and tried it again. Just more of the same. It would putter when I would try to rev the engine and then die. Please give me some advice. ,Frank


Sounds like your not getting enough fuel or air- Change your fuel filter and air filter then go from there- Post your results back here or to my email addy ([email protected] ... 1986 Chevrolet Camaro

Hi, I have a 05 Chrysler Town & Country. When I got home, I opened my car door and the radio stayed on, the electric doors would not open, had to do them manually. So I restarted and the electric doors would still not work, my headlights came ON even though I never touched them and they would not turn off. I let it sit for about 20 minutes came back outside and everything seems normal but the check engine light is on. What is up with this van?


Gremlins? ... Chrysler Town & Country

I have a 2001 Maxima with approx 142,000 miles. When the car is warmed up good, it sometimes will either not shift out of 1st gear, or it shifts into neutral & I have to stop the car to either shut it off for a 5 -8 minute cool down, or let it shift back to 1st gear before proceeding. I have a intemittent "service engine soon" led which I had checked and the code that we got was "J74" which I was told was a transmission speed sensor malfunction or failure. I took the car to my Nissan dealers


Possibly get speed sensor replaced this could be causing problem without speed input to control module the module doesnt know what gear it should be in or use\015\012have this part of speed sensor circuit tested ... Nissan Maxima

TEN MINUTES DOWN THE ROAD ENGINE LIGHT CAME ON,DROVE ANOTHER 10 DOWN THE ROAD, CHECKED OIL,LET SIT FOR 5 MIN, COOL DOWN CHECK OIL, ITS DOWN QT. DROVE ANOTHER 10 MIN TO STORE GOT OIL, RESTARTED CAR, ENGINE LIGHT STILL ON?


Need to have computer scanned to see what the cause of the light is.then you can properly address the problem. ... 2001 Chrysler PT Cruiser

Hello all, I have a 1985 F-250 4x4 w/351 Windsor, Dual Tanks, Front tank needs new fuel pump, however recently went offroading and everything got wet, day after the trip, engine would crank but would not stay running...I let it sit for a week and everything started w/no problems, ran strong..Just took it to the car wash yesterday, and it died once again had to get a tow home...what could it be, sounds like somthing is getting wet? Connection to under chasis relay or fuel pump for rear tank? what


Check the plug wires and the distured to it sounds like its not getting fire ... 1985 Ford F350
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 3.6728 seconds