sense I've learned how to use some new tools this should be easy to fix and locate
maybe some of you guys have some input any and all info is helpful.thanks guys.
heres my data with problems and even with these problems the small groove still improved the power.How cool is that?
STATE OBD CHECK
MIL STATUS: ON
CODES FOUND: 4
MONITORS OK: 8
MONITORS INC: 0
MONITORS N/A: 3
ALL CODES 4
P0455 ENG EVAP SYSTEM LARGE LEAK
P0301 ENG CYLINDER 1 MISFIRE DETECTED
P0171 ENG SYSTEM TO LEAN BANK 1
P0174 ENG SYSTEM TO LEAN BANK 2
P1740 ENG TCC SOL INDUCTIVE SIGNATURE
MIL STATUS ON
ABSLT TPS(%) 19.2
ENGINE SPD(RPM) 738
CALC LOAD(%) 31.8
IGN ADV(DEG) 18.5
ST FTRM1(%) 6.3
LT FTRM1(%) 29.7
ST FTRM2(%) 3.1
LT FTRM2(%) 29.7
VEH SPEED(KPH) 0
FUEL SYS1 CLSD
FUEL SYS2 N/A
ST FTRM11(%) 2.3
ST FTRM21(%) 2.3
OBD2 STAT CA
DIAG MON TEST
TEST $01 DATA ID 11 ID 21
WHAT IS THIS IN FO FOR OR WHAT DOES INFO TELL ME
Well, based on the data you recorded, here's part of what might be going on:
P0455 Evap large leak. Could be a gas cap issue - make sure it's on tight and there is no rust around the cap seal. We have also seen fuel filler necks get rusty and cause this. Could also be a stuck open evap vent valve - seen lots of these on GM's. If this is venting when it should be closed, it will trigger code now. Your scan tool might give you Evap Vent Solenoid parameters - look at these.
P0171 & P0174 - could be leaking intake gskt, cracked air snorkel between MAF sensor and Throttle body. I have seen this personally! Computer relies on MAF for how much air engine is getting. If you introduce "extra" air, it's unaccounted for and will set code. Because it's on both banks, look to see what would affect both banks.
Fuel Trims running rich
Coolant temp 82* C means 179*F - OK
Intake Air Temp - IAT show 62*F means 143*F - This is a problem.
This show me the computer thinks the air coming in from the outside is 143*F. I don't think so. If the IAT is part of the MAF, this might be a failed component. Disconnect the MAF sensor and see if the IAT number changes.
I'm hope this helps partly - If you have more questions, call me at 1-231-203-3072.
Michael, those fuel trims are way off the chart. Scott is right start looking at the vaccum air leaks. There seems to be a very lean hit that turned on dump fuel mode. reset ecu taking off batt cable etc. Start engine and see if the long terms start at 0 if not look at the iat/ mass air. First check all vaccum lines though. Id expect ltft to be neg 5 to neg 7 shorts will be neg 10 to neg 12 right off the bat trying to adj the longs then bal to neg 2 to 5. Dan gadgetman Mo.
I put a maf off a ranger that I have.I also replaced the cam shaft postion senser about a year ago. I did this only by eye I didn't have a cam shaft postion sensor tool. Could that have something to do with the trims.right now it says i don't have any codes but itseems to run a little rough now.and data is alot deffernt.
MIL STATUS OFF ?
ABSLT TPS(%) 19.2
ENGINE SPEED 824
CACL LOAD(%) 30.6
IGN ADV(DEG) 19.0
ST FTRM1(%) 0.0
LT FTRM1(%) 7.0
ST FTRM2(%) 23.4
LT FRTM2(%) 7.0
FUEL SYSTEM1 CLSD
FUEL SYSTEM2 N/A
ST FTRM11(%) 0.0
ST FTRM21(%) 25.8
The load is showing 30% thats too high at idle 5 to10% at idle this is telling ecu to add gas as it thinks it`s climbing a hill. The rear o2s should be under .5 and the ft o2s will bounce but be mostly pos..5 plus Then the fuel trims will give you neg readings as that is cutting fuel. The iac will depend on temp outside and in engine compartment. The coolant ect is going to read about 190f to 196f warmed up if it gets to 207f or 208f it`ll dump fuel also. Your slight miss could be too much fuel, plug trying to foul. I still think its sucking air somewhere. This would cause all this to happen. When it defaults it dumps fuel to protect itself. It will throw a light.
I'm going to put the smokenator 9000 on it tomarrow.
can't wait to show you guys what I made out of a Breathing Machine.
its just like the smoke wizard.Total cost $20.00.
I also made a nice fuel injector tester.
I truly thank you guys for all your help.
Found problem Also lead me to finding the same problem on three automobiles
that I own.EVAP system is leaking, seems to be a silennoid sticking.The reason
I looked at all three is. I live off a very long dirt road. Apparently the dust
from this is effecting them.I found this out by removing the vac. line and
just capping off intake port.A quick test drive revealed a great increase in milage.
will post scan tool results trims ect. once I can pen down truck this weekend.
I should be able to continue the grooven. Because we all know a little groove can go a long way.