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Your 1999 Chevy Astrovan has intermittent rough idle and misfire at take off?
Wiki User
∙ 15y ago
I would tune it up, Plugs and wires, Factory AC Delco Cap and Rotor
And change the fuel filter.
Wiki User
∙ 15y ago
Add your answer:
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What is causing my 1997 Chevy cavlier to idle rough. Why did scanner say cylinders 1 and 3 miss firing?
Well...the misfire on 1 and 3 would explain the rough idle. The misfire could be from worn plugs, wires, bad coil, or bad injectors.
What would cause 2000 Chev Astrovan to run rough all rpms analyzer says misfire on 2 cylinders minor misfire on others already replaced all plugs plug wires injectors?
check for low fuel pressure (its critical) with guage on schraeder valve on fuel pipe on rear of engine in cab drivers side , should be around 55psi
What are the signs of a sticky valve?
Code P0300, Intermittent rough idle,
Will a intake gasket leak cause misfire and rough idle?
yes it can
What is the problem for a Chevy Cobalt with the code P0303?
0303 Cylinder 3 Misfire Detected Could be a bad plug or plug wire; or an injector problem. Is it running rough? If it sounds smooth, it could be a transient condition. Such as driving on rough roads or lugging the engine, however rough roads/lugging will unlikely set a misfire code with an automatic transmission. I'd give the light several days and see if it goes out. If it's running a bit rough and it's time for plugs and wires anyway you may go ahead and do replace them. Once it's running smoothly, the light will go out soon--three consecutive ignition cycles without a fault. The way it sets a misfire code is the computer checks the crank position sensor every 100 revolutions for any deceleration that a misfire would cause. If it discovers deceleration, it looks at the cam position sensor in order to identify the cylinder. Therefore the PCM may not detect a light misfire right away. If it detects a severe misfire, it will flash the MIL, since a severe misfire could damage the catalytic converter, and disable the lock up torque converter clutch momentarily to rule out the rough road possibility. Since this code is not set by an actual lack of spark, just unexpected engine deceleration, any action that jostles the engine will be read as a misfire.
What is the problem for a Chevy Cobalt with the code P0303.?
0303 Cylinder 3 Misfire Detected Could be a bad plug or plug wire; or an injector problem. Is it running rough? If it sounds smooth, it could be a transient condition. Such as driving on rough roads or lugging the engine, however rough roads/lugging will unlikely set a misfire code with an automatic transmission. I'd give the light several days and see if it goes out. If it's running a bit rough and it's time for plugs and wires anyway you may go ahead and do replace them. Once it's running smoothly, the light will go out soon--three consecutive ignition cycles without a fault. The way it sets a misfire code is the computer checks the crank position sensor every 100 revolutions for any deceleration that a misfire would cause. If it discovers deceleration, it looks at the cam position sensor in order to identify the cylinder. Therefore the PCM may not detect a light misfire right away. If it detects a severe misfire, it will flash the MIL, since a severe misfire could damage the catalytic converter, and disable the lock up torque converter clutch momentarily to rule out the rough road possibility. Since this code is not set by an actual lack of spark, just unexpected engine deceleration, any action that jostles the engine will be read as a misfire.
What causes a Park Avenue to run rough or misfire and stall at redlights?
Check the Park Avenue EGR valve for a clog. A clogged valve can cause a rough idle and stall at a light.
1998 Grand Cherokee runs rough when gas is pressed?
Misfire? Due for a tune up? Check engine light on?
What do old spark plugs do to a car?
Old spark plugs can make a car misfire, run rough, and not fire at all.
Why does your 90 Acura Integra idle rough?
Check idle adjustment (rpm) then check timing, then check for misfire-start there.
What are causes for rough idle misfire when stopped changed wires plus gas filter rotor and cap?
Run a compression test.
1998 Windstar with 3.8 motor idles rough and check engine light starts blinking at stop light?
you have a cylinder misfire
