Service Engine Soon, 95 Camaro

Tiny
SHOEBOY
  • MEMBER
  • 1995 CHEVROLET CAMARO
Hi, I recently bought a 1995 Camaro, 3.4L V6, Auto, 49000mi. The car runs nice, But if im driving at 50+mph, then slow down, the Service Engine Soon light comes on, If I stop somwhere, say for coffee & restart the car, the light dosent come back on, Also, If im just driving short distances, It dosent come on, Kind of intermittant. This started when I ran really low on Gas, The owners manual says that the Service Engine Soon light might come on if you get too low on fuel because it senses a missfire & should reset after a few starts, But it sounded like this only pertained to cars equiped with OBD II, Which this car does not have. Either way Light on or off, the car runs fine. Is this something I need to be concerned about or is this just a trait of this model?
Thanks
Jim
Do you
have the same problem?
Yes
No
Monday, February 26th, 2007 AT 6:34 AM

15 Replies

Tiny
LYTN_J
  • MEMBER
Are there any trouble-codes?
Was this
answer
helpful?
Yes
No
Tuesday, February 27th, 2007 AT 9:43 AM
Tiny
SHOEBOY
  • MEMBER
I dont know about the trouble codes, My local auto zone said they could only check the codes if I had OBD II, Which I dont have, But I do have a Data Link Terminal, Is this OBD I? & Is it worth me buying a OBD I tester, they are pretty cheap, I guess they blink the #s of the trouble code, I have a Haynes manusl that lists the codes, Just not sure if this is an OBD I terminal, Its just listed in the user manual as a data link terminal.
Thanks for the reply
Jim
Was this
answer
helpful?
Yes
No
Wednesday, February 28th, 2007 AT 5:28 PM
Tiny
LYTN_J
  • MEMBER
The 94 and 95 years are crossover years between OBD1 and OBD11. You may have a hybrid system.

How many pins in the data link connector? If there are 12 pins, that should be obd1.

If there are 16 pins, you may have what they call OBD1.5, it's a hybrid system, uses 16 pins but you have to use an OBD1 code reader.

I don't have much info on that hybrid system. I'd hate to see you buy an OBD1 code reader and then it not work on your system. Maybe the store would let you bring it back, if doesn't work? You can ask.

My first thought about your CEL was to check the 02 sensor and circuit. I can't tell you to replace it without doing some tests.
Was this
answer
helpful?
Yes
No
Thursday, March 1st, 2007 AT 12:40 PM
Tiny
SHOEBOY
  • MEMBER
Thanks for your help, Its the 16 pin OBD 1.5, Auto Zone wont read it, I might try a dealer or a friend who has a code reader, The service engine light hasent gone on the past day or so, But today, After driving 65+, then slowing to 40- mph it went back on, Also the car idles a bit rough, Im changing the fuel filter as the car has been run to almost empty a couple times, Also changing the PCV valve, hopefully I can get the error codes, it still runs good, never stalls, but it must be something ! Possibly O2 sensor like you said.
Thanks Again for your help & I will make a donation asap, this weeks a little tight though.
Was this
answer
helpful?
Yes
No
+1
Thursday, March 1st, 2007 AT 7:05 PM
Tiny
SHOEBOY
  • MEMBER
I finally got The Error Code, Just one came up, EGR Valve ! Actually EGR selonoid #2.
Thanks Again
Jim
Was this
answer
helpful?
Yes
No
Friday, March 2nd, 2007 AT 3:02 PM
Tiny
MIKEGDEEZ
  • MEMBER
I have the same OBD-1.5 system in my '95 Trans Am. How'd you pull the codes? The more specific the better because I'd rather do it myself even if I spend a little $$ on equipment rather than pay the dealer $50 bucks to do it.

Feel free to e-mail me a reply as well since I only found this forum through a google search a few minutes ago! (Mikegdiaz @ gmail. Com)
Was this
answer
helpful?
Yes
No
Friday, April 18th, 2008 AT 3:57 PM
Tiny
OMAR198569
  • MEMBER
  • 1995 CHEVROLET CAMARO
  • V8
  • 2WD
  • MANUAL
  • 100,000 MILES
I have a 1995 Camaro which is an OBD 1.5. I Can't seem to find a code reader that will work with my car. I would rather buy a code reader than take it to a shop. So my question is where can I find a code reader that will work with my car.
Was this
answer
helpful?
Yes
No
-1
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Jumper A to B on the ALCL and count the flashes example DTC 12 Flash pause then flash flash it will show two more times before it goes to the next code if any


http://www.2carpros.com/forum/automotive_pictures/12900_GM_ALCL_4.jpg

Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Chevrolet
13 Open Oxygen Sensor Circuit
14 Coolant Temperature Sensor (High Temp Indicated)
15 Coolant Temperature Sensor (Low Temp Indicated)
21 Throttle Position Sensor (Signal Voltage High)
22 Throttle Position Sensor (Signal Voltage Low)
23 Manifold Air Temperature (MAT) Low Temp Indicated
24 Vehicle Speed Sensor (VSS) Circuit
25 Manifold Air Temperature (MAT) High Temp Indicated
32 Exhaust Gas Recirculation (EGR) Circuit
33 Manifold Absolute Pressure Sensor Circuit (High Sig.)
34 Manifold Absolute Pressure Sensor Circuit (Low Sig.)
35 Idle Air Control (IAC)
41 Cylinder Select Error
42 Ignition Control (IC) Circuit
43 Knock Sensor (KS) Circuit
44 Oxygen Sensor Circuit (Lean Exhaust Indicated)
45 Oxygen Sensor Circuit (Rich Exhaust Indicated)
51 EEPROM or ECM Failure
53 System Voltage Overcharge
54 Fuel Pump Circuit (Low Voltage)
55 ECM Error
61 Degraded Oxygen Sensor
62 Transaxle Gear Switch Signal Circuit
63 A/C Refrigerant Pressure Sensor Circuit
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
SHURE234
  • MEMBER
  • 1991 CHEVROLET CAMARO
Computer problem
1991 Chevy Camaro V8 Two Wheel Drive Automatic 10000+ miles

i just got done looking at a 91 camaro rs 305 and thinking about buying it but 1 small problem the check engine soon light was on but it is a carb motor could this just b and o2 sensor or sumthin more? And if so cant I just eliminate the o2 sensor and b just fine
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
BILLYMAC
  • EXPERT
Yes could be 02 sensor why eliminate them won, t matter
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
No, you engine is not carbureted. It's fuel injected.

Here is a way to get the codes.
These codes are for an 89 but should be the same for 91.

https://www.2carpros.com/images/question_images/199424/original.jpg
Was this
answer
helpful?
Yes
No
+1
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
BILLYMAC
  • EXPERT
Has someone converted it to carb?
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
WRENCHTECH
  • EXPERT
No, I'll bet he's mistaking a TBI for a carb. People do it all the time.
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)
Tiny
BILLYMAC
  • EXPERT
Ya your prob right lol
Was this
answer
helpful?
Yes
No
Monday, April 29th, 2019 AT 5:46 PM (Merged)

Please login or register to post a reply.

Recommended Guides