Question about 2004 Saturn L-Series

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Blinking engine light, shaking

Engine light starts blinking when I slow down at red light, and engine starts pulsing and shaking.

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Sounds like it's time for new plugs.

Posted on May 13, 2014

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Posted on Jan 02, 2017

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2004 chevy caviler ,working fine ,then engine light blinking,shaking when stop at red lights,little louder sound smell,tail pipe,i never put oil in the car,would that be a reason ?


Engine light blinking,shaking Has a misfire bad enough that will damage the catalytic converter . Bad coil's , plug's , ignition module going bad . Have the vehicle checked for DTC'S diagnostic trouble codes .

Mar 16, 2017 | 2004 Chevrolet Cavalier

1 Answer

Check engine light blinking car shaking


The light is blinking to alert the driver that the problem is serious enough to damage the catalytic converter.
You'll need to get the engine computer scanned for trouble codes to proceed with testing.

Feb 18, 2014 | Cars & Trucks

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1988 Chevrolet k1500 350 v8 not getting signal to fuel injectors


So, it's the injector circuit. There is a 10 amp injector fuse in the fuse block, on left side, 4th one down. Check this fuse. It supplies constant power to both injectors, on the red wire to injector 1, and a white wire splice from this to injector 2. A steady 12 volts anytime key is in on, run, or start. You can check this with a test light or voltmeter. Ground the test light and probe injector connector's red wire on injector 1, and the white wire on injector 2-both should be hot with key on.
This may be why the noid light didn't blink. The noid light must have this steady power signal, and when the computer internally grounds the injector ground circuit for a split second, you get injector pulse-or a blinking noid light.
You can check the ground circuit separately with a test light also for each injector. Place the ground clip of test light on the POSITIVE battery post, and probe the blue (ground) wire on injector 1, the engine must be cranking over, and the test light should be blinking. Do the same for the green wire on injector 2. If the test light is blinking on both ground wires, with engine cranking-the ground circuit is good. You are sending power down the ground wire to computer, and when the computer grounds the circuit, the tester will light up-it will blink because the computer only momentarily grounds the circuit to cause pulsing of the injectors.

Feb 18, 2014 | 1988 Chevrolet K1500

1 Answer

Jerks and shakes from time its cranked. can drive it but still jerks, doesnt want to take in gas when speeding up, some back firing when giving it gas. engine light flashes red until letting off the gas...


Sounds like a fuel injector is clogged up or is not firing due to the computer not firing it. Check by putting a noid light on each injector and checking for pulse by viewing a blinking light from it. Also, one can check to see if a stethoscope can be used to listen for a clicking from the injector indicating it's at least pulsing that way.

Dec 18, 2010 | 1998 Toyota 4Runner

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I have a mazda protege 2003 and my car stinks like rotten eggs when i put on the gas and on top of that, my engine light is blinking and my car shakes when i stop at a red light!


i have a 2003 mazda protege. this is the third time my check engine light has come on. the first time the car started to shake when i stopped at a light and the check engine light came on. i had a readout done and it said misfire. i took it to a garage and they changed my spark plugs and wires. 2 weeks later it came on again and my car started to shake whenever i stopped. readout said misfire. they fixed the coils. it has been 2 weeks since then and my car started shaking again whenever i stop and the light came on. what could possibly be wrong with it?

Feb 06, 2010 | 2003 Mazda Protege

1 Answer

Engine just started to shake when i come to a stop


check vacuum lines ,fuel filter,egr valve these three usually dont set off a check engine light when they are going bad or minor leak

Feb 01, 2010 | 2004 Chevrolet Avalanche

2 Answers

2004 Nissan Quest began shaking while driving then


SOUND LIKE FUEL PUMP.SCAN IT TO MAKE SURE.IT ALSO COULD BE FUEL PUMP RELAY OR FUSE.

Aug 10, 2009 | 2004 Nissan Quest

1 Answer

Car Shuts down while driving


i would check the coil

Apr 09, 2009 | 1997 Ford Contour

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