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My Volvo s40 has started to idle low and stalls, this after a hot day with air con on...temp guage did not go up and spark plugs are black and are a month old..

Checked water levels, oil was low, topped up..

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Sounds like its running rich then lean need to scan vehical could be 02 sensor me an mostly up stream ones change thos first or you have an exhaust leat throwing 02 s off or mass air flow sensor is bad scan car first take too shop auto zones scannners are cheap and dont allow you to test sensor or see values need for sensor

Posted on Dec 04, 2014

  • Fred
    Fred Dec 04, 2014

    recently the muffler has been making some rattling noises like hte baffles have busted cheers will check this

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1 Answer

2001 Volvo s40 seems to stall and not start for ten to 15 min. Also has high temperature reading that is false as car is not really hot.


You need to look at the temp sending unit it's probably faulty anthor issue with volvo is dirty throttle body's this raises havoc on the car they idle up down all over the map also you should change the thermostat too as a precautionary measure make sure it's the right temp for your year of your car thanx Chris

Mar 04, 2014 | 2000 Volvo S40

1 Answer

Car wont stay running unless foot is on the gas pedal


is the CEL check engine light out running? (it comes on stalled, and is normal that)
stalled. engine stall. no year, now that makes this 10x impossible
and even more impossible no engine stated, (displacement or VIN)
F22? 2.3. 2.7? 3.0L?
if in usa, (no loctation stated ) open hood, look up, see tag?
see vacuum EPA map, see engine type? bingo.

so I wall answer in the generic, (ALL CARS gasoline)
fails hot or cold engine, does hot engine reach 180F and hold?
wow, how low was the oil, off end of stick, none?
stalling is caused by over 50+ things. (we do tests to find it fast )
we use tools, do you have tools, or can buy them, or do you just want
endless guessing. here is the path.
#1 stall maker is a stuck open EGR main valve, ignored during the turn up, clean it. make sure it close
in the macro,
1: bad engine, the hot engine can lose compression and stall.
tool1 the $20buck compression guage.
2: bad spark, or timed wrong. gapped plugs wrong, wrong plugs used. bad wires sets, (old dizzy engines) bad COPS newer cars.
check for hot spark at all spark plugs, skip none.
3: bad fueling (too much or not enough
if engine runs perfect and only idle is too low 800 hot is normal
no DTC 300s misfires, then maybe the ISC is just dirty.
we clean the EGR and ISC every time.
if the EGR leaks, the fast right foot can save a stall but is hard.
if the ISC sticks closed, saving the stall is piece of cake, super easy
after all , you are adding the missing air.

does that help,. no, then take it top the man, the ASE man.
The Mechanic.with the ASE patch on his /her sleeve.
no year, ouch.

Dec 02, 2013 | Honda Accord Cars & Trucks

1 Answer

2001 volvo s40 cyl 2 misfire how do i repair?


Do a Compression Test, do a VISUAL INSPECTION of the Spark Plugs. If there is a COLOR DIFFERENCE and / or the Spark plugs on Cylinder 1 and 2 are CLEAN. you have a blown head gasket.

I have done so many of these 1.9 liter Turbo's with this same Problem that I can no longer count...

Apr 10, 2013 | 2001 Volvo S40

1 Answer

I have a volvo 2001 volvo s40 1.9t. 4cylinder misfire


MOST TIME IF YOU GOT MISFIRE ON ALL CYLINDERS.YOU COULD HAVE AIR LEAK IN INTAKE MANIFOLD.OR PROBLEMS WITH EGR VALVE.ALSO YOU COULD HAVE A DIRTY OR STICKING FUEL INJECTOR AND A BAD COIL OR SPARK PLUG.

Nov 06, 2009 | Volvo S40 Cars & Trucks

1 Answer

91 volvo stalls at anytime


TRY ANOTHER FUEL PUMP AND FUEL FILTHER THESE PUMPS ARE FUNNY ON VOLVOS HAD SAME PROBLEM ON 850 TURBO AND SURE ENOUGG IT WAS THE PUMP

Apr 11, 2009 | 1991 Volvo 940

3 Answers

Engine idles to low and stalls


I would have the throttle plate cleaned because when they get dirty they have the symptoms that you are describing

Jan 24, 2009 | 2000 Volvo S40

3 Answers

01 s40 idle air control valve- hard to replace?


your IAC valve, idle air control valve is under the black plastic cover on the front right corner on the engine, remove cover undo valve, renew gasket and re install. ade 13 years volvo tech

Nov 10, 2008 | 2001 Volvo S40

1 Answer

VOLVO S40 SE 2001RPM HIGH


YOU MAY HAVE A IDLE SPEED CONTROL VALVE PROBLEM, CLEAN IT FIRST, THEN DISCONNECT THE BATTERY, FOLLOW THE PROCEDURE I HAVE ATTACHED.

Here is the most common cause of this stall and idle speed issues, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 07, 2008 | 2000 Volvo S40

1 Answer

Volvo s40, loosing power


if you have over 125k miles on it chances are your about time for a new catalytic convertor... can cause a rotten burnt smell... lack of power.. and even a stall... or no start

Sep 04, 2008 | 2003 Volvo S40

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