1998 Honda CRV engine light still on.

1998 HONDA CRV

KELLIEHONDA

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1998 Honda CRV 144,00 miles

Hello,
My engine light is still coming on with these codes: p0420, p0304, p1399. I have had my spark plugs, spark plug wires, fuel filter, distributor cap with the rotor and ignition switch replaced. I have added Seafoam to my gas tank. What else could be my problem?

Thanks,
Kellie

updated 3-12-10
Ok, what is the EGR system? What do I need to tell the mechanic? Is this expensive, dangerous or a nuissance?

Mar 7, 2010 at 2:30 PM

KHLOW2008

CAR REPAIR CONTRIBUTOR
41,814 POSTS

Hi Kellie,

P0420 = Catalyst efficiency below threshold. Possibly the catalytic converter is faulty or there are leakages.

P0304 is cylinder #4 misfiring whereas P1399 is a temporary code for the misfiring.

I would suggest checking th EGR system as it affects the # 4 cylinder.

Mar 8, 2010 at 1:35 PM

RASMATAZ

CAR REPAIR CONTRIBUTOR
75,992 POSTS

updated 3-12-10
Ok, what is the EGR system? What do I need to tell the mechanic? Is this expensive, dangerous or a nuissance?

Its the exhaust gas recirculation its job is to recyle the unburn gas back to the engine to get a 2nd time burn and reduces the combustion chamber temperature to prevent detonation/pinging.

Could be diluting the A/F mix leaning it out-meaning more air than fuel to burn that's causing misfires.

I recommend you have the sparkplug,compression and injector for no.4 checked out to knock out the P0304

Also for the catalytic converter could be unurned fuel, oil, oxygen and coolant temperature sensor problem.

Back to the EGR system

Labor on it is 1/2hr and EGR valve is about $s30.00 USD total costs varies with locations-could be $70.00-$130.00 per hr on labor-

Mar 12, 2010 at 4:28 PM

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