P2173. Bogging problems. Fix?
Jun 4, 2012, 12:53 PM
#1
P2173. Bogging problems. Fix?
Hey guys my car is running like **** all of a sudden and threw p2173. Any Ideas? Dont think it's spark Plugs.
Also when I try to start my car it starts and stalls. I have to pump the gas once and it fires up and idles
Major Edit: Buy a MAF sensor if you get this code! Fixed mine and other owner's issues
Edit 1 month later: okay we'll I made another thread of how I'm hesitating t high Rpms, but now I'm getting symptoms of what happened in this thread but no cel. When I get on the gas it goes forward but at a noticeable difference, like it barely accelerates, and when I shift I shift normally, but the car kicks forward when Ii get on the gas then smoothly accelerates.
Also when I try to start my car it starts and stalls. I have to pump the gas once and it fires up and idles
Major Edit: Buy a MAF sensor if you get this code! Fixed mine and other owner's issues
Edit 1 month later: okay we'll I made another thread of how I'm hesitating t high Rpms, but now I'm getting symptoms of what happened in this thread but no cel. When I get on the gas it goes forward but at a noticeable difference, like it barely accelerates, and when I shift I shift normally, but the car kicks forward when Ii get on the gas then smoothly accelerates.
Last edited by MarkChamorro; Jun 28, 2012 at 04:28 PM.
Jun 4, 2012, 06:22 PM
#3
Not really much to go on, other than it points to your MAF. My guess is a dodgy connection at the Piggy, where you cut and spliced into the MAF signal wire. I used to have problems with my car bogging if I had a passenger and they bumped the mess of wiring hanging under the ECU with their leg while I was driving. I took out the spade connectors I had in there (was supposed to be temporary anyway), and soldered and heat-shrink-wrapped the connections. No more problems.
Check your wiring by the ECU, specifically the MAF signal wire. Make sure it's got a good, solid connection on both wires, and that they are not shorting out to anything else.
Check your wiring by the ECU, specifically the MAF signal wire. Make sure it's got a good, solid connection on both wires, and that they are not shorting out to anything else.
Originally Posted by Mitsu FSM
DTC P2173: Abnormal Intake Air Amount
.
TECHNICAL DESCRIPTION
• ECM decides the allowable
intake air amount in accordance with the engine
speed and the target opening angle of throttle
valve.
• ECM checks whether the
actual intake air amount is more than the allow-
able intake air amount.
.
DESCRIPTIONS OF MONITOR METHODS
The actual intake air amount is more than the allow-
able intake air amount.
.
MONITOR EXECUTION
Continuous
.
DTC SET CONDITIONS
Check Conditions
• Engine is running.
Judgment Criteria
• The actual intake air amount is more than the
allowable intake air amount for 1.5 seconds.
.
OBD-II DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Mass airflow sensor failed.
• Throttle valve faulty operation.
• Throttle position sensor failed.
• ECM failed.
.
TECHNICAL DESCRIPTION
• ECM decides the allowable
intake air amount in accordance with the engine
speed and the target opening angle of throttle
valve.
• ECM checks whether the
actual intake air amount is more than the allow-
able intake air amount.
.
DESCRIPTIONS OF MONITOR METHODS
The actual intake air amount is more than the allow-
able intake air amount.
.
MONITOR EXECUTION
Continuous
.
DTC SET CONDITIONS
Check Conditions
• Engine is running.
Judgment Criteria
• The actual intake air amount is more than the
allowable intake air amount for 1.5 seconds.
.
OBD-II DRIVE CYCLE PATTERN
None.
.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are: )
• Mass airflow sensor failed.
• Throttle valve faulty operation.
• Throttle position sensor failed.
• ECM failed.
Jun 5, 2012, 05:06 PM
#7
Got the MAF sensor, I reset the ECU, let it idle for 15 minutes+. And when I put it in gear, go, then hold the clutch in it stalls. I have had this issue before but for some dumb reason I decided to keep the car alive by pumping the accelerator and I start driving. Flooring it to be honest for about 1 minute. Got home after the test drive and it stalled out ( saw that coming) but when I had this same issue before, I'd just restart it and let it learn to idle. But now it starts then stalls out, which never happened to me before. So I disconnected and let the ECU reset again bc I remembered I have the piggyback and need to drive normal for however long (100 miles or so). Hope this helps the idle issue. Any input helps
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Jun 6, 2012, 04:56 PM
#11
Well after driving in traffic and the car stalling while in traffic, it finally learned to idle lol. So all in all steps I took were, 1) buy MAF sensor after throwing the CEL code (P2173). 2) install (straight forward for a noob like me) 3) reset ecu 4) learn idle 5) drive happy 
also no need to disconnect or even touch the ECM/Piggy
also no need to disconnect or even touch the ECM/Piggy
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