99 Accord has trouble starting in cold, Check engine light is on with full gas tank
#1
99 Accord has trouble starting in cold, Check engine light is on with full gas tank
Hello,
I have a '99 Accord LX, Four-door, V6 with 260K miles. Recently, the check engine light has started coming on when the gas tank is full and stays on until the tank gets down to about half a tank or a little less and then it turns off. The car also has quite a lot of trouble starting in the cold. It will sputter on and idle REALLY low and often stall. After it warms up, it runs fine.
I replaced the main fuel relay and this improved the problem slightly for a little while. The car idles slightly better, although the starting issue is still there and the check engine light is still on. I then was told that maybe the problem was the gas cap. I replaced the gas cap this morning and it has had no effect that I can discern.
Also, the battery is less than a year old, so I'm assuming that that isn't the problem.
Thoughts?
I am starting to wonder about the fuel line, fuel pump, chokes and things of that nature. Perhaps there is a part that doesn't function when cold for some reason? Perhaps a part doesn't get the heat that it needs to start? Perhaps a bad fuse? I'm pretty stumped and any help would be much appreciated.
I have a '99 Accord LX, Four-door, V6 with 260K miles. Recently, the check engine light has started coming on when the gas tank is full and stays on until the tank gets down to about half a tank or a little less and then it turns off. The car also has quite a lot of trouble starting in the cold. It will sputter on and idle REALLY low and often stall. After it warms up, it runs fine.
I replaced the main fuel relay and this improved the problem slightly for a little while. The car idles slightly better, although the starting issue is still there and the check engine light is still on. I then was told that maybe the problem was the gas cap. I replaced the gas cap this morning and it has had no effect that I can discern.
Also, the battery is less than a year old, so I'm assuming that that isn't the problem.
Thoughts?
I am starting to wonder about the fuel line, fuel pump, chokes and things of that nature. Perhaps there is a part that doesn't function when cold for some reason? Perhaps a part doesn't get the heat that it needs to start? Perhaps a bad fuse? I'm pretty stumped and any help would be much appreciated.
Last edited by RyanHostetler; 11-05-2013 at 09:20 AM.
#2
You have ignored the best clue to your problem; check engine light. Go to Autozone or other parts store and ask them to pull the code. Write down the code and post it here; Pnnnn is form of code.
Any recent maintenance? How many miles on plugs and wires.
good luck
Any recent maintenance? How many miles on plugs and wires.
good luck
#6
99 Accord has trouble starting in cold, Check engine light is on with full gas tank
ECT is engine coolant temperature sensor.
It's #15 above the water pump; it has a 2-wire plug.
Not to be confused with the other 2 water-temperature "sensors":
#13 with a 1-wire plug is for the dashboard temperature gauge
#14 is a radiator-fan-switch
It's #15 above the water pump; it has a 2-wire plug.
Not to be confused with the other 2 water-temperature "sensors":
#13 with a 1-wire plug is for the dashboard temperature gauge
#14 is a radiator-fan-switch