P0304 and P0300 codes issues 02 suburban
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Joined: Apr 2015
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From: Dover PA
P0304 and P0300 codes issues 02 suburban
Folks,
New member here so bare with me. I have been having issue with my 02 suburban 5.3 flex fuel vortec. I have been getting:
1) rough start
2) rough idle
3) p0304 code
4) P0300 code
These issues sometimes go away but are getting worse.
Below is the freeze frame I copied for explanation. I would appreciate the help! Joe
New member here so bare with me. I have been having issue with my 02 suburban 5.3 flex fuel vortec. I have been getting:
1) rough start
2) rough idle
3) p0304 code
4) P0300 code
These issues sometimes go away but are getting worse.
Below is the freeze frame I copied for explanation. I would appreciate the help! Joe
Fuel Sys 1 cl
Fuel sys 2 cl
Load% 2.0
ETC 181.4f
STFT Bank1 0.0
LTFT Bank1 .8
STFT Bank2 8.6
LTFT Bank2 -3.9
Map(in Hg) 10.3
RPM/min 551
VSS/mph 0
MAF(lb/min) .7
TP% 0
Now getting a p0175 code after switching 2 and 4 coils. Updated
After reviewing the new data and talking with a GM mechanic. I have learned in my case it was the fuel injectors. I was also told buy OEM injectors. After pulling the fuel rail for bank 2 (right side) I saw I had after market injectors with two different seals. At that point I bought 8 new ac Delco injectors through amazon for 58$ a piece. Seems like we are operating quite well. No more long start and fuel smell or codes.
Fuel sys 2 cl
Load% 2.0
ETC 181.4f
STFT Bank1 0.0
LTFT Bank1 .8
STFT Bank2 8.6
LTFT Bank2 -3.9
Map(in Hg) 10.3
RPM/min 551
VSS/mph 0
MAF(lb/min) .7
TP% 0
Now getting a p0175 code after switching 2 and 4 coils. Updated
After reviewing the new data and talking with a GM mechanic. I have learned in my case it was the fuel injectors. I was also told buy OEM injectors. After pulling the fuel rail for bank 2 (right side) I saw I had after market injectors with two different seals. At that point I bought 8 new ac Delco injectors through amazon for 58$ a piece. Seems like we are operating quite well. No more long start and fuel smell or codes.
Last edited by 4tofloor; May 12, 2015 at 10:29 AM. Reason: update
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