Question about Chevrolet Malibu

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My daughter has a 98 chevy malibu, with the 2.4 4 cyl. Check engine ligth is on, 2 codes P-0300 and P0420. for the p-0300 i noticed when i changed the plugs the plastic insulater where cracked and small pieces missing. could that be it? And the p-0420 what could that be? thanks in advance for your time

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Po304 could be spark plug bad coil,420 is catalytic converter is plugged

Posted on Feb 05, 2010

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Both codes have to do with misfire. The 1st one directly dealing with the misfire cylinder, and the other has to do with bank 1 at the catalyst which is most likely been caused by the fuel not being burned and the 02 sensor is getting polluted. Fix the misfire and the other should go away in time; however, you might need to unplug the negative on the battery for about 20 minutes to clear the codes. This may need to be done a couple of times until the sensor clears.

Posted on Feb 05, 2010

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I have a 1999 chevy malibu its 6 cylinders 3100 engine and i have the codes with me this aare the codes that i need 1.#p0420 2.#p0410 3.#p0305 4.#p0449


P0420 - Catalyst System Low Efficiency
P0410 - Secondary Air Injection (AIR) System
P0305 - Cylinder 5 Misfire Detected
P0449 - Evaporative Emission (EVAP) Vent Solenoid Control Circuit

Sep 05, 2011 | 1999 Chevrolet Malibu

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I have a 2003 Expedition 5.4L Triton. Two days ago, with low gas (38 miles to empty), engine started running rough. Code read P0302, misfire cyl. 2. Since it had 113K miles, I figured its time to change...


Most likely the coils. Easiest way to check is swap them with another cylinder, start it, pull the plug wire connecter and if it doesn't change the engine the coil is bad. If it is the injector, then you can check it with an ohm meter. Touch the leads in the injector it should read 11 to 15 ohms. if you need help let me know.
Randy

Dec 02, 2010 | 2003 Ford Expedition

1 Answer

05 Chevy Malibu P0420 code has set the check engine light.


Hi. P0420 is a catalyst efficiency code. 100% of the time you need a new catalytic converter. If you want to be sure it is the cat pull the O2 sensor before the cat and drive it, the sluggishness will go away because there is no more restriction.

Aug 26, 2010 | 2003 Chevrolet Malibu

1 Answer

Will a 3.1 liter engine out of a 94 pontiac grand prix fit into a 98 chevy malibu, and what is the significance of vin code "m"?


I looked it up and it shows that these engine have diff. sensors to comunicate with computer and possible exhaust and intake are diff.,
check it out, 94 has OBDI the 98 has OBDII
I put the engines next to each other and compair,
94 engines are all by it's self.
98-99 engines are interchangeable
Good luck

May 20, 2010 | 1998 Chevrolet Malibu

2 Answers

Code p0332 and p0420


16716/P0332 - Knock Sensor 2 (G66): Signal Too Low Possible Symptoms
  • Irregular rpm
  • Drivability problems
  • Loss of power
  • Engine damage
Possible Causes
  • Circuit G66 short to Ground
  • Circuit G66 open
  • G66 improperly torqued
  • G66 damaged
  • Control Module damaged
16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold Possible Causes
  • Leakage in Intake and/or Exhaust System
  • Catalyst faulty
  • Oxygen Sensor(s) faulty
  • Oxygen Sensor(s) Control faulty
Possible Solutions
  • Check Intake and Exhaust System for Leaks
  • Check Catalyst
  • Check Oxygen Sensor(s)
  • Check Oxygen Sensor(s) Control
    • Perform Oxygen Sensor(s) Aging Check

May 03, 2010 | 2000 Chevrolet Monte Carlo

1 Answer

98 chevy malibu codes


yes your right on target and the Cat code is definetly due to the misfire.

Feb 05, 2010 | Chevrolet Malibu Cars & Trucks

1 Answer

2000 Chevy Malibu- check engine light


Have the DIS module checked and the coil pack for cyl 3. If either/both of those need replaced, have it done and have the codes cleared. Then see if it clears the others.

You may need a TPS (throttle position sensor) as well.

Sep 11, 2009 | 2000 Chevrolet Malibu

1 Answer

98 chevy malibu:engine wont turn


Check with a battery tester if you have power at the starter, Are the Battery post clean, Are any fuses blown in the fuse Box, check for any corrision.

Aug 13, 2009 | 1998 Chevrolet Malibu

2 Answers

Chevy Blazer P0303 and P0420


Most probably and if a cat is not flowing proper is causes back preasure that can result in sticking or burned vavles,mechanic not nice by saying ignore the cat effiency code p0420.Can ussually have cat replaced at aftermarket muffler shop for approx. $200 cheaper than valve job or excessive fuel that you have used and damage that may occur to your engine.

Jun 16, 2009 | 1999 Chevrolet Blazer

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