ran the code tester it came back with running to lean in cylinder one and missfire on cylinder one the guy at autozone told me i need a new mass flow sensor what say you guys out there????


thanks for amy help:)

Was it lean in bank 1? and misfire on cylinder 1?

Was it lean in bank 1? and misfire on cylinder 1?


yep

Well I would assume the misfire would be a coil or a plug. The lean on bank one might be related to the misfire, or it could be a o2 sensor going bad. I would get that misfire taken care of first. Then unhook the battery for 5 or 10 minutes to clear the codes. Then see if the lean code comes back.

So to sum it up change your spark plug first, if it still misses change the coil out.

Are you in roseville michigan?

Well I would assume the misfire would be a coil or a plug. The lean on bank one might be related to the misfire, or it could be a o2 sensor going bad. I would get that misfire taken care of first. Then unhook the battery for 5 or 10 minutes to clear the codes. Then see if the lean code comes back.

So to sum it up change your spark plug first, if it still misses change the coil out.

Are you in roseville michigan?


nope roseville california and i will try what you said!!

You could also try cleaning the mass air sensor and running some seafoam through the air intake or vac line as well.

Well I would assume the misfire would be a coil or a plug. The lean on bank one might be related to the misfire, or it could be a o2 sensor going bad. I would get that misfire taken care of first. Then unhook the battery for 5 or 10 minutes to clear the codes. Then see if the lean code comes back.

So to sum it up change your spark plug first, if it still misses change the coil out.

Are you in roseville michigan?


thanks for the help, changed the spark plug and cleaned the mass flow sensor,.... no check engine light but seems to be missing a little but still now check engine light:) :cool:

You could also try cleaning the mass air sensor and running some seafoam through the air intake or vac line as well.



thanks will do !!!!

thanks for the help, changed the spark plug and cleaned the mass flow sensor,.... no check engine light but seems to be missing a little but still now check engine light:) :cool:


check engine light back on replaced sparkplug uggggggg

If it still feels like it is missing I would check into changing that coil out, and reseting the code again. A intemitent miss could cause the check light to come on after a couple days.

If it still feels like it is missing I would check into changing that coil out, and reseting the code again. A intemitent miss could cause the check light to come on after a couple days.


the original code was system to lean p0171
and cylinder 1 misfire p0301 im going to run the code again and see what comes up next when i replaced the plug it ran great took it to work next day it started to idle rough and the light kicked on again!!!!

the original code was system to lean p0171
and cylinder 1 misfire p0301 im going to run the code again and see what comes up next when i replaced the plug it ran great took it to work next day it started to idle rough and the light kicked on again!!!!


so bit the bullet bought a new mass flow and now i have a missfire in cylinder one all the other code are gone i want to replace the plug wires were is a good place to get them at a decent price!??????