95 LT1 running rich
Thread Starter
2nd Gear
Joined: Aug 2007
Posts: 2
Likes: 0
95 LT1 running rich
I need some help here... I have a 95 LT1 and I have been running rich for about a month now. I just got a tune up, replaced plugs and wires, cleaned the air filter, replaced fuel filter, and my check engine light is still coming on... I had to park the vette because Im getting 10 mpg and I can't afford to drive it. If anybody has a clue what might be the deal here, I would much appreciate any advice
Thanks again
Brett
Thanks again
Brett
Intermediate
Joined: Jul 2000
Posts: 26
Likes: 2
From: GLEN ELLYN, IL, USA
I had problems w/ my MAF resulting is the car running really rich. I got the LEAN codes from the car since it was dumping in all the fuel it could. Cleaned my MAF and all was well. Gotta be carefull of the oiled filters I guess.
Le Mans Master
Joined: Feb 1999
Posts: 9,922
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
I need some help here... I have a 95 LT1 and I have been running rich for about a month now. I just got a tune up, replaced plugs and wires, cleaned the air filter, replaced fuel filter, and my check engine light is still coming on... I had to park the vette because Im getting 10 mpg and I can't afford to drive it. If anybody has a clue what might be the deal here, I would much appreciate any advice
Thanks again
Brett
Thanks again
Brett
The check engine light may be due to rich condition caused by a misfire, which is very mild ona sequential injection of a stock engine.
Melting Slicks
Joined: Feb 2006
Posts: 3,105
Likes: 96
From: Sunrise FL
Good luck getting ANYBODY to scan a '95 for free. They take a special cable and scanner. I searched "freescan" software and have been trouble getting it to work on my '95 Z28.
Anyway, get it scanned. Get the codes and post 'em back here
Anyway, get it scanned. Get the codes and post 'em back here
Drifting
Joined: Nov 1999
Posts: 1,502
Likes: 12
From: Yorktown Heights NY
You don't need to do anything special to pull the DTC codes on a 95...I have one
Above your right knee under the dash is the ADL computer connector.
Counting top row left to right #1 is upper left, upper right is #8, the counting continues on the second row from left #9 to right #16.
All you have to is jumper ( a simple rebent paper clip is the tool of choice) #4 & #12 which are directly one over the other. Then turn on the ignition but do not start the car.
The speedometer display will spit out all the codes, module by module starting with module 1, then 4, 9, and A, ending with a 1.0 when done.
Write down what you see for each module and post it to us.
We have the service manuals that describe the problem in detail for each code and recommended troubleshooting.
BTW, all Vette owners should buy the service manuals for their vehicle available at the Helm website...the pair for the 95 are $120 + shipping and well worth the price.
Good luck
Above your right knee under the dash is the ADL computer connector.
Counting top row left to right #1 is upper left, upper right is #8, the counting continues on the second row from left #9 to right #16.
All you have to is jumper ( a simple rebent paper clip is the tool of choice) #4 & #12 which are directly one over the other. Then turn on the ignition but do not start the car.
The speedometer display will spit out all the codes, module by module starting with module 1, then 4, 9, and A, ending with a 1.0 when done.
Write down what you see for each module and post it to us.
We have the service manuals that describe the problem in detail for each code and recommended troubleshooting.
BTW, all Vette owners should buy the service manuals for their vehicle available at the Helm website...the pair for the 95 are $120 + shipping and well worth the price.
Good luck
Last edited by 95BLKVette; Aug 28, 2007 at 11:13 PM.
Heel & Toe
Joined: Sep 2011
Posts: 19
Likes: 0
From: sparta tn
been having same trouble with my 95 with 128k miles, the ses light would come on and off had codes scanned read maf and both o2 sensors. my mechanic said maf would set off o2 codes he took maf off cleaned it rescanned and then read right bank o2 sensor....changed that and BAM...done the trick runs great idles smooth and im a very happy man...
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Instructor
Joined: Jun 2000
Posts: 171
Likes: 1
From: Chicago
Can you explain this a bit further for some education?? I have a code
H44, lean left 02, but get no check engine light either. I started checking to investigate a very occassional ping.
Not trying to hijack just curious between the correlation of no check engine light pointing to O2 sensor.
Thanks.
Safety Car
Joined: Sep 2001
Posts: 4,157
Likes: 554
From: Glenbeulah Wi
Can you explain this a bit further for some education?? I have a code
H44, lean left 02, but get no check engine light either. I started checking to investigate a very occassional ping.
Not trying to hijack just curious between the correlation of no check engine light pointing to O2 sensor.
Thanks.
H44, lean left 02, but get no check engine light either. I started checking to investigate a very occassional ping.
Not trying to hijack just curious between the correlation of no check engine light pointing to O2 sensor.
Thanks.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
If it's not OBD2 they can't scan it. Last I heard AZ has very limited capability for OBD1 and especially not for the 94 & 95 vetts.You don't need to do anything special to pull the DTC codes on a 95...I have one
Above your right knee under the dash is the ADL computer connector.
Counting top row left to right #1 is upper left, upper right is #8, the counting continues on the second row from left #9 to right #16.
All you have to is jumper ( a simple rebent paper clip is the tool of choice) #4 & #12 which are directly one over the other. Then turn on the ignition but do not start the car.
The speedometer display will spit out all the codes, module by module starting with module 1, then 4, 9, and A, ending with a 1.0 when done.
Write down what you see for each module and post it to us.
We have the service manuals that describe the problem in detail for each code and recommended troubleshooting.
BTW, all Vette owners should buy the service manuals for their vehicle available at the Helm website...the pair for the 95 are $120 + shipping and well worth the price.
Good luck
Above your right knee under the dash is the ADL computer connector.
Counting top row left to right #1 is upper left, upper right is #8, the counting continues on the second row from left #9 to right #16.
All you have to is jumper ( a simple rebent paper clip is the tool of choice) #4 & #12 which are directly one over the other. Then turn on the ignition but do not start the car.
The speedometer display will spit out all the codes, module by module starting with module 1, then 4, 9, and A, ending with a 1.0 when done.
Write down what you see for each module and post it to us.
We have the service manuals that describe the problem in detail for each code and recommended troubleshooting.
BTW, all Vette owners should buy the service manuals for their vehicle available at the Helm website...the pair for the 95 are $120 + shipping and well worth the price.
Good luck
Learn how to use the on board diagnoistics. It's a feature that works great. It will tell you the codes in all the modules. Some code readers and scanners will only tell you information about the PCM (mod #4).It sure sounds like the O2s might be giving a problem. Its a direct input on gas mileage. If the SES light is flashing, there is probably a code in there.
