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Code 420 is a bad catalytic converter...I have one in my shop right now with the same issue/code.
what about code P1456?
there is a vibration for the car when the speed is around 40 mile/hour
Code 1456 is usually a bad evap bypass valve near the fuel tank. I have replaced several of these.
Code P1456 come on firstly and P0420 comes up yesterday. Do they have relationship?
Usually not. These are almost always separate issues.
what about vibration around 40 m/h? DO you think it is a problem?
I doubt it. How are the tires?
I do not know
It has no business with the two codes?
could you tell me the exact name of that evap bypass valve? thanks a lot
Most vibrations are tire related. Does the vibration stop if you release the accelerator quickly? No, the vibration and the codes are not related.
It's called an "evaporator bypass solenoid valve."
how much is it?
I am pretty sure the part is around $80 from Honda.
do you mean solenoid switch? I could not find evaporator bypass solenoid valve in autozone website
You won't find this part at auto zone...it's dealer only.
last question, how much money should I pay for the diagnosis of the two codes?
thank you very much
Diagnosis? That's what we're doing here. You're diagnosed, you just need to buy a catalytic converter and the evap solenoid and have someone install them. They should not charge over 1.5 hours to install both items combined.
Are you sure that? I mean you did not see the car for a second and just judge it by your experience. (no offence, I am sure you are probably right). If the code is on again after I replace the two stuffs, what should I do? MANY THANKS
I see these codes weekly. The only possible code for the 420 is a catalytic converter. The evap solenoid is 99% of the time or a loose gas cap (which I'm sure you checked) Honda can test the evap solenoid with a scanner, but honestly, it would cost more to have them check it that the part and labor would cost to simply replace it (most dealers charge an hour minimum...$120) for testing this.
Is there any other potential problem I need to pay attention to? thanks, XXXXX XXXXX to drive it to washington DC from Buffalo (about 500 miles) after I fixed this problem.
No, neither of these parts would cause a driveabilty issue until you get them fixed. How many milesare on your Accord?
A machanic told me that a secondary oxygen sensor may be in problem, is that right? thanks
only 14k on a 98? No, that's not the problem.
140 k, sorry
Ok, have you repalced the timing belt? How long since a tune up or transmission fluid change?
it is replaced. I bought it for just two month. I do not think the previous owner change them. But I change the oil every 3 mon
It is run well except the engine light
"it is replaced. I bought it for just two month. I do not think the previous owner change them. But I change the oil every 3 mon"...what is replaced? The timing belt, transmission fluid, or the tune up parts?
timing belt, I thought because the previous owner have a record about timing belt
How can I know if it is changed?
You should be ok on the timing belt if you show a record for it. You can't tell if it's been replaced without actually taking it all apart again. How about the transmission fluid and tune up?
I do not know, do I need to change fluid? what is "tune up"?
If you don't know for sure on the fluid, yes, I would change it. Use Honda atf-z1 fluid from your Honda dealer. The tune up parts consist of the spark plugs, distributor cap, distributor rotor and air filter and are crucial for fuel economy.
how much money for tune up and how often should I do it? thanks
where are you?
Every 50,000 miles. The parts cost around $100 and an hour labor. East Tennessee.
I am in NY state:) it is a long way
Lol! Quite a trip.
should I need to do other maintanence before the long trip (round-up for 1000 miles)
Sorry for the delay, no, you should be fine. I would make sure the transmisison fluid was replaced, other than that, you're good.
how are you
Hello. Is there something else I can do for you?
are you here
I was planing to change converter and I found a dealer yesterday. But I change my mind today and want to drive my car back. When I drive my car, I found the power steering is failed. The dealer told me that he did nothing with my car. When I add gas or drive it more rapid, the control of steer is easier, could you tell me which part did he touch? thanks a lot:) I hate that dealer.
that is great
I do not know, he is very angry
do you have any idea about this situation?
you work so hard:)
are you still working now?
what should I need to notive whant I remove and clean reservior? thanks a lot
is it like a changing steering fluid?
thanks a lot