I am having a problem when attempting to scan codes?

TOMMY ROBB

MEMBER
1995 CHEVROLET CAMARO
5.7L
V8
2WD
MANUAL
160,000 MILES

I have the car listed above z28 that I trying to scan codes and have bought 2 different code readers, and both didn't work. I guess the 1995 is a changeover year for the odb1 and odb 2 please help me ready to drive this car so bad.

Wednesday, October 11th, 2023 AT 2:09 AM

13 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,656 POSTS

In 1995 it was the last year of the OBD1 cars. So, here is the way you run the codes:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Make sure you have new spark plugs and you have changed the fuel filter and air filter out. Let me know what codes you have so we can help fix the car for you.

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Wednesday, October 11th, 2023 AT 8:16 AM

TOMMY ROBB

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17 POSTS

Yes, the a +b wire jump the terminals did not do anything I don't know what to do. I'm tired of buying new parts that don't fix the problem.

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Wednesday, October 11th, 2023 AT 4:28 PM

KEN L

MASTER CERTIFIED MECHANIC
47,656 POSTS

I hear you; can you check the orange wire at the OBD1 connector for power? This guide can help, we will find the problem hang in there.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images (below). Please let us know how it goes.

Image (Click to make bigger)

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Thursday, October 12th, 2023 AT 10:41 AM

TOMMY ROBB

MEMBER
17 POSTS
1995 CHEVROLET CAMARO
5.7L
V8
2WD
MANUAL
160,000 MILES

I'm trying to check codes on it, tried the wire jump from a to b terminals and it did not work I'm totally desperate for help on this please let me know how to check my codes.

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Thursday, October 12th, 2023 AT 11:45 AM (Merged)

KEN L

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47,656 POSTS

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Thursday, October 12th, 2023 AT 12:18 PM

TOMMY ROBB

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17 POSTS

Yes, the orange wire has power.

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Thursday, October 12th, 2023 AT 1:44 PM

KEN L

MASTER CERTIFIED MECHANIC
47,656 POSTS

Good, now check the blk and the blk/wht wires for ground at the ALDL.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Just connect the test light to the power side of the battery.

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Friday, October 13th, 2023 AT 8:27 AM

TOMMY ROBB

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17 POSTS

I don't think the tester wire is long enough to do that.

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Friday, October 13th, 2023 AT 10:12 AM

KEN L

MASTER CERTIFIED MECHANIC
47,656 POSTS

Yep, you will need to make an extension or use a voltmeter.

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Saturday, October 14th, 2023 AT 10:18 AM

TOMMY ROBB

MEMBER
17 POSTS

Okay, I just took off the aftermarket alpine mobile security system from under the dash (steering wheel) now I have a wiring mess. Please help to let me know what I need to wire up.

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Saturday, October 14th, 2023 AT 11:34 AM

KEN L

MASTER CERTIFIED MECHANIC
47,656 POSTS

I would reconnect the wires that were cut to install the alarm, just match wire color to wire color and you should be good to go.

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Sunday, October 15th, 2023 AT 9:42 AM

TOMMY ROBB

MEMBER
17 POSTS
1995 CHEVROLET CAMARO
5.7L
V8
2WD
MANUAL
160,000 MILES

So, I wired the security box back up and everything works with that now. The car starts if I give it a little gas, but it backfires, and I have to keep foot on gas pedal or it will shut off. If I try start without foot on gas pedal it just almost starts and shakes the hole car pretty bad I don't know what to do, and I tried to read codes by jumping a wire to the a+b ports and nothing happens. Any help would be greatly appreciated. Thank you in advance.