Question about 1999 Oldsmobile Alero

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I have a 99 alero 2.4 It studder's so bad when youre taking off it will kill the engine. I have replaced both coils and the coil tower and i have changed the plugs and fuel pump and the filter. It still does the same thing. what could it be?

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  • Oldsmobile Master
  • 14,036 Answers

COULD BE THE TPS SENSOR FAULTY OR FAULTY TRANSMISSION TORQUE CONVERTER.

Posted on Sep 13, 2010

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1 Answer

99 Alero 4 cyl. CEL flashing, cuts off while stopped or when slow down to turn corners. Recently started backfiring. Drives fine @40 mph. Went to auto zone and got #3 misfire code.


start with changing your plugs, wires and distributor cap and rotor. If it is the type of system that uses coil overs, then replace coil number three as well. A flashing CEL means that you have a misfire that is bad enough to damage your catalytic converter so get on the one before you have to pay bigger money

Aug 10, 2013 | 1999 Oldsmobile Alero

1 Answer

Where is the cam position sensor located on a 99 oldsmobile alero, how easy is it to install?


camshaft position sensor location on the V6 engine located at the front of the engine block below the power steering pump. the 4 cylinder engine camshaft position sensor location below ignition coil cover where coil cover say 2.4L TWIN camshaft sensor in that location below coil cover. you will see red or red white wires connected to it.

Apr 14, 2011 | 1999 Oldsmobile Alero

2 Answers

Car shakes while in idle


There are 3 very common causes that come to mind. They are in order of the lowest cost to highest cost. You may want to try one at a time and then check for improvement. It's unlikely that all 3 things apply to your issues.

1. Make sure you have a clean air filter. ( The air filter is like the lungs for your engine. Engines need a proper mix of fuel, and air to run smoothly, a dirty filter prevents the air needed to get to the engine.)

2. Idle air control valve. ( This part also insure the engine is getting the proper amount of air to idle smoothly.) For most vehicles this part costs $50 to $70, and is very easy to change.

3. Oxygen sensor. ( if this part goes bad it will prevent the computer from being able to determine the proper air/fuel ratio. ) Also, this part, if it's bad, should cause your " check engine " light to come on.

I hope this helps you.

Jan 29, 2011 | 2000 Oldsmobile Alero

2 Answers

Engine runs rough,misfires& lacks power. transmission shift real slow & jeck in when driving, also idle rough


DO A LITTLE TUNE UP.REPLACE AIR FILTER - FUEL FILTER- CLEAN FUEL INJECTORS BY POURING A BOTTLE OF SEAFOAM IN A FULL TANK OF GAS - REPLACE SPARK PLUGS AND WIRES.IF ALL IS GOOD SOUND LIKE FUEL PUMP FUEL PRESSURE SHOULD BE 41 - 47 PSI. REASON I SAY DO A TUNE UP.IF EVERY THING IS WORKING PROPERLY. THAT WAY YOU WONT BUY A NEW PUMP FIRST AND SPEND EXTRA MONEY.ALL YOU NEED IS A TUNE UP WHICH WOULD BE CHEAPER ON FIRST CHOICE. WHEN I TROUBLE SHOOT I ALWAYS TUNE ENGINE UP FIRST THEN I CAN GO TO NEXT LEVEL.I TROUBLE SHOOT IN STAGES THEN I FIND PROBLEM QUICKER.

Nov 17, 2010 | 1999 Oldsmobile Alero

1 Answer

Diagram of coil and firing order opf 99 alero


back of engine is 1-3-5 front is 2-4-6. coil order is 5-2-3-6-4-1 all numbered from passenger to driver side

Oct 10, 2010 | 1999 Oldsmobile Alero

1 Answer

It was running fine and then all of a suddun its running rough, it wont shift over and the engine light is blinking.. its a custom 2001 buik century. we need to fix the car so we can get back and forfth to...


flashing engine light means engine misfire. let car idle and mist the plug wires down with water, rev the engine up and down and look for little sparks jumping from the wires. and arcing wires can cause problems. before changing any bad wires check the coil packs where the wires plug in the three small boxes on the top back of motor. they are three packs with two wires each. one pack at a time take the two wires off to reveal the coil towers. have an assistant start the motor and make sure the spark goes from tower to tower. repeat on remaining two packs. if the spark goes straight down the tower the coil needs replaced. if there is no spark, the coil needs replaced.

Sep 01, 2010 | Buick Century Cars & Trucks

1 Answer

My problem is on a 1996 Buick Riviera, engine cde K. Code 300 came up, what could it be?


IGNITION COILS, PLUGS, WIRES
1 COIL FOR 2 WIRES. PULL TWO WIRES ON COIL HAVE SOME START CAR IF ARCH TOUCHES EACH TOWER COIL IS GOOD. IF ARCH GOES TO TOWER AND BACK DOWN TO BOTTOWN OF COIL THAT INDICATES BAD COIL. IF COILS ARE OKAY THEN CHECK WIRES AND PLUGS.

Aug 29, 2010 | 1996 Buick Riviera

1 Answer

Dont know how to take master cylinder off to replace coil pack


You shouldn't have to remove it....here are the steps from the tech manual:

Removal & Installation
  1. Disconnect the negative battery cable.
  2. Label and disconnect the spark plug wires from each of the coil pack towers.
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Ignition coil removal—2.4L engine

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Ignition coil removal—3.3L and 3.8L engines


  1. Disengage the electrical connector from the ignition coil pack.
  2. Remove the coil pack mounting fasteners.
  3. Remove the coil pack from the vehicle. If equipped, remove the coil pack from the mounting bracket.
To install:
  1. Place the coil pack into position on top of the engine valve cover, or mounting bracket, if equipped.
  2. Install and tighten the coil pack mounting fasteners to 9 ft. lbs. (12 Nm).
  3. Plug in the electrical connector to the ignition coil pack.
  4. Connect each spark plug wire to each corresponding coil pack tower. The coil pack towers are numbered with the correct cylinder identification. Be sure that the spark plug wires snap firmly onto each coil tower.
  5. Connect the negative battery cable.

Jan 18, 2010 | 2001 Chrysler Voyager

1 Answer

How do I test and change a bad ignition coil in a 99 Maxima?


Im having the same issue w/ my 99 maxima. had the problem 2 months ago, they replaced coil, changed plugs, told me that I would still get knock sensor code but dont worry about it. Now the rough idling and check light flashing is happening again.

Oct 19, 2009 | 1999 Nissan Maxima

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