Rough idle at start with codes
#1
Lead Lap
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I started my car today and it was running rough, engine light came on. Shut it down restarted and ran fine. Checked codes PO172 and PO175 bank 1 and bank 2. Cleared codes and it seems to be running fine. About a month ago car started then died but haven’t had any issues till now. Mass air flow sensor ?
#4
Lead Lap
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It does have live data. I’ll watch it, And look back on some old posts what the values should be.
I panicked when the light came on. Last and first time was due to a valve spring failure causing the motor to blow.
I panicked when the light came on. Last and first time was due to a valve spring failure causing the motor to blow.
#5
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The "started, then died" comment sounds like what happens right after you have the battery disconnected for a little bit. It does this normally upon the FIRST re-start after the "reset" (aka, having the battery disconnected).
Have you messed with the MAF or the intake recently? Perhaps a slight leak somewhere where something wasn't fully tightened...perhaps the tube onto the TB?
Have you messed with the MAF or the intake recently? Perhaps a slight leak somewhere where something wasn't fully tightened...perhaps the tube onto the TB?
#6
Lead Lap
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No changes for months. I cut the air box about 2 months ago and it’s been fine since. Our temps here dropped about 20 deg since last time I dove it which was only a day before.
I plugged my scanner in today while driving. Not sure what the values should be but it looked good. Lol. At idle was about 8 under throttle it would go up.
I plugged my scanner in today while driving. Not sure what the values should be but it looked good. Lol. At idle was about 8 under throttle it would go up.
#7
Lead Lap
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No changes for months. I cut the air box about 2 months ago and it’s been fine since. Our temps here dropped about 20 deg since last time I dove it which was only a day before.
I plugged my scanner in today while driving. Not sure what the values should be but it looked good. Lol. At idle was about 8 under throttle it would go up.
I plugged my scanner in today while driving. Not sure what the values should be but it looked good. Lol. At idle was about 8 under throttle it would go up.
At idle what's your fuel trims look like? Short and long term?
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#9
Lead Lap
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Those number look ok. One question do you have an after market filter in place? I notice this with mine having an AEM dryflow. It will add fuel on idle bank 2 to to 5% long term. With stock filter all my short trims will be 0 longs will be -2 to -3 both banks at idle once warmed up.
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jre1638
RX - 1st Gen (1999-2003)
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04-28-11 10:07 PM