1994 Corvette
 

Hi I am a new member. Purchased a 1994 Corvette couple of years ago.................. Love it !

I am experiencing a problem with a backfire, which sounds like it is coming from under the car, when I accelerate.
Also the " check engine "light comes on only when I accelerate up hill or it is under load.

A local garage have checked the codes and all seems well. Just changed the EGR Valve but that did not help.
Could it be that my Catalytic Convert/s are plugged ?

Anybody run into this problem before ?

RE: 1994 Corvette
 

My experiance with a plugged Cat, is a loss of power. Ya just can't get the exhaust gasses out fast enough. Try exhaling through a small straw, then use a toilet paper tube,you'll get the idea.
"Backfire" and "outfire" are usually the result of the timing being off.

( a collapsed lifter, weak valve spring, bent push rod,or a warped valve do goofy things too )

Watch oil pressure and check oil level. My suspect on the engine light during accelleration and a load.

RE: 1994 Corvette
 

:DOh ya, Welcome to CF! :)

RE: 1994 Corvette
 

Thanks for the Welcome and the tip.
Going to give the Vette a good tune up in the spring.

RE: 1994 Corvette
 

Welcome Garry123,

As you have already seen this site is waesome and the people are even better when it comes to help. Enjoy your stay with us.

RE: 1994 Corvette
 

Don't forget to change oil, filters ( air, oil and fuel ), top off tranny and rear. Complete chasis lube, front and rear. Top off all other fluids too. P/S, rad/antifreeze, brake fluid, and washer. Ya might think about flushing your cooling system and replacing with fresh antifreeze anda new thermostat. Same temp rating, just a new one.Inspect all lines and hoses for signs of weakness, cracking,or leakage. :)

Can't wait to see pics. ;)

RE: 1994 Corvette
 

Good advise but the first thing I did was flush cooling system, replace Thermostat, replace air filter and change oil ( Synthetic of course Mobil 1 ).
I like the idea of tuning the puppy up.

Thanks Guys ............ this is going to be a great site to learn more about my Vette.

RE: 1994 Corvette
 

Just throwin' stuff out there. Sometimes we don't think to do some things. Heck, I forget stuff all the time. :D

RE: 1994 Corvette
 

Me too, Memory loss comes with........uh......what was it....hang on,...I'll remember.....umm......Oh yeah!.....no wait, ...that's not it ..........Damn...I hate that......


Welcome to the site. Don't forget to wave. Cheers

RE: 1994 Corvette
 

Uh,......hate what? :eek: