My 1988 Corvette Rich smelling exhaust\gas issue

455

Asked by Shaeranne Oct 17, 2015 at 09:09 PM about the 1998 Chevrolet Corvette

Question type: Maintenance & Repair

My 1988 Corvette has been tuned up, new fuel pump, new CAT back exhaust system, BUT it still has a rich gas exhaust smell that is strong.  Any suggestions or ideas?   Total mileage 50K  Need some help, please.  Thanks.

10 Answers

455

I haven't gotten the codes checked. Do I take it to any mechanic shop and they should have what I need to check the codes? What's the procedure on how they do that? Thanks so much.

455

Awesome. Can't believe I can do this myself and get the codes. FYI: My "check engine" light has never turned on or alerted me... and I have never received any codes thus far for my '88 Vette on the instrument panel or information center.... Thanks

1 people found this helpful.
455

Thanks... Got it. I ordered an O2 sensor as mine is original. Going to check the EGR next. Thanks for your help!

395

When I put a NEW cat back exhaust on my 2000 Corvette, it smelled very "rich" for nearly 200 miles. The new systems have a coating put on them for storage, packing, and shipping... the smell burns off after driving awhile. Give it a few miles and it will go away. Just a thought, but it worried me too! Hope this helps!

1 people found this helpful.
455

I just got a major tune-up, engine degreased, 02 sensor changed, AC compressor, evaporator\dryer and expansion device, serpentine belt and belt tensioner assembly, and new rack and pinion and water cooler line back to rack, distributor cap and wires, all new spark plugs, new spark plug wires, brake booster, brake lines cleaned.... Now I went to start the car and my "check engine" light is on........Need some ideas and help, please. Thanks!

1 people found this helpful.
455

I got a magnaflow cat back system put on my car last year as well, maybe that could be the "rich gas smell." I found a small vaccuum leak and got that repaired. Just can't figure out why my check engine light is on and I've never seen this on before and it's right after I did the major tune-up as explained above......

395

Did you reset the codes after the tuneup and O2 sensor replacement? Also, one more thing... sometimes it is only a simple matter of a bad gas cap that can cause the check engine light to come on. Try getting a new gas cap and reset the computer. Hope this helps! Let me know!

455

No, did not reset the codes after tuneup and 02 sensor replacement... My mechanic does not own OBD1 scanner which is scary.. And with the paperclip trick I am scared that he will fry my computer...... Is it hard to do and can I fry my computer using the paperclip trick? Also, got a new gas cap.

395

Super easy... simply disconnect the negative battery terminal, turn on the light switch for 5 to 10 minutes, then connect the battery back up and proceed to start the car. If the check engine comes on then, there is another problem, but at least you know you're starting fresh. And, no, you won't fry the computer by the paper clip trick if you do it following the instructions. There are other methods, but this one is free and easy! Let me know!

Your Answer:

Corvette

Looking for a Used Corvette in your area?

CarGurus has 14,532 nationwide Corvette listings starting at $4,999.

ZIP:

Own this car?

Share your experience with others.

1998 Chevrolet Corvette

Review another car

CarGurus Experts

  • #1
    John Carson
    Reputation
    5,260
  • #2
    Vincent Parker
    Reputation
    4,750
  • #3
    dandyoun
    Reputation
    1,420
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Camaro
655 Great Deals out of 8,355 listings starting at $3,240
Used Ford Mustang
947 Great Deals out of 19,852 listings starting at $1,950
Used Porsche 911
376 Great Deals out of 4,453 listings starting at $12,900
Used BMW M3
81 Great Deals out of 1,485 listings starting at $9,888
Used Ford F-150
6,459 Great Deals out of 169,177 listings starting at $1,871
Used Chevrolet Silverado 1500
4,160 Great Deals out of 123,229 listings starting at $1,999
Used Toyota Supra
32 Great Deals out of 594 listings starting at $35,095
Used BMW 3 Series
1,008 Great Deals out of 14,193 listings starting at $1,200
Used Mercedes-Benz C-Class
922 Great Deals out of 20,737 listings starting at $2,499

Used Cars for Sale

2025 Chevrolet Corvette For Sale
3,188 listings starting at $62,709
2024 Chevrolet Corvette For Sale
73 Great Deals out of 2,915 listings starting at $61,892
2023 Chevrolet Corvette For Sale
109 Great Deals out of 1,112 listings starting at $55,490
2022 Chevrolet Corvette For Sale
61 Great Deals out of 522 listings starting at $57,990
2021 Chevrolet Corvette For Sale
43 Great Deals out of 480 listings starting at $54,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.