Help with some OBDII readings please(:
#1
Help with some OBDII readings please(:
I have a 1998 Honda accord Ex v6. I Bought the about a year and a half ago and quite a bit of work has gone into the little things due to wear and tear over time. The car has about 215,000 miles on it, and i bought it with 196,000 on it. Since then ive had to put in a rebuilt tranny twice, hopefully this one stays good for awhile. Also, my Cat is gutted because it was clogged up, but dont worry, i will be replacing it when i redo my full exhaust system in a few weeks. Anyways, a problem thats been happening for awhile is a form of surging i would say while driving. When i first turn on the car, the rpms are at about 1750 or so, plus or minus 200, and it stays that way for about 5 minutes and then lowers to about 700. If i try to put the car into drive while the rpms are that high in the 1700's the car sort of takes a little jerk, obviously because the rpms are so high while putting it into gear. As it does this on every startup, i usually have to start my car and wait a little bit before driving so the rpm's go down. However nomatter if i wait to put it into drive or not, when driving at a constant speed, the car often shutters or surges, and the rpms fluctuate up and down and i will sometimes lose speed for a few seconds and it will continuously do this on and off while driving. My MIL status light is on and brings up the code P0171(Bank 1 system too lean). I will include all of the live data from my car at idle with my obd scanner at the end of this post. I noticed that my ST FTRM1% stays at around 45 at idle. Im not sure what the values are supposed to be here. If anyone has any ideas on what could be a fix for the high rpms on startup and my fuel trim readings, and maybe if you notice any other problems with my live data, that would be great thanks!
MIL STATUS: ON
ABSLT TPS %: 9.4
ENG SPEED RPM: 674
CALC LOAD %: 28.6
MAP KPA: 30
COOLANT F: 186 DEGREES
IAT F: 113 DEGREES
IGN ADV DEG: 29.0
ST FTRM1 %: 46.8
LT FTRM %: 18.7
VEH SPEED MPH: 0
FUEL SYS 1: CLSD
FUEL SYS 2: N/A
O2S11 V: 0.035
ST FTRM11 %: 46.8
02S12 V: 1.015
ST FTRM12 %: 0.0
OBD2 STAT: CA
MIL STATUS: ON
ABSLT TPS %: 9.4
ENG SPEED RPM: 674
CALC LOAD %: 28.6
MAP KPA: 30
COOLANT F: 186 DEGREES
IAT F: 113 DEGREES
IGN ADV DEG: 29.0
ST FTRM1 %: 46.8
LT FTRM %: 18.7
VEH SPEED MPH: 0
FUEL SYS 1: CLSD
FUEL SYS 2: N/A
O2S11 V: 0.035
ST FTRM11 %: 46.8
02S12 V: 1.015
ST FTRM12 %: 0.0
OBD2 STAT: CA
#2
Re: Help with some OBDII readings please(:
High rpms on startup is completely and totally normal. It does this to warm the car up faster and to warm up the cat faster. Unlike i4 hondas that use both an fitv and an iacv yours is incorporated together. Again, high rpms are normal until the car warms up.
#3
Re: Help with some OBDII readings please(:
Well looking at your sh ort term fuel trims which is labeled st ftrm it looks like your maxed out. It's adding 46.8 percent more fuel than what it should be. You could have a vacuum leak on intake side, low fuEl pressure, bad gas, just to name a few.
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