MY 94 vette converible has a very noisy knocking going on underneath can anyone suggest why?

plorenzo
0

Asked by plorenzo Sep 18, 2010 at 01:01 PM about the 1994 Chevrolet Corvette Convertible

Question type: Maintenance & Repair

I have recently replaced the ecm/pcm.  the knocking problem happened after I had a problem with the Vette cuting out on me and running rough and the soothing out.  This problem did come up during the time we were trying to troubleshoot the original problem.  The clanking underneath sounds like some thing has come loose, it is very loud, but the motor seems to be running fairly smooth now. Are there any suggestions???

2 Answers

Mike Bonnell
8,815

Many ideas :) Exhaust hitting floor pan , Trans Mount broken , Motor mount broken , rear end mount worn, Ujoints worn Hows that for a start

Nathan Chandler
35

Does it do this all the time? Only in gear? These cars had a dual mass flywheel that would hit the transmission bell-housing when there is a misfire or rough running condition. A lot of times a (or a few) bad injectors can cause this. Use an Ohm meter and measure each injector, it should read near 15 Ohms. If you see anything +/- 3 Ohms you should replace it. Google Corvette injectors. There is a company called Fuel Injector Clinic ( I think) that sells a set of reconditioned injectors for a very cheap price (compared to new). I find its best to replace all 8.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 califcarson
califcarson
Reputation 1,100
#2 carGrrl
carGrrl
Reputation 1,070
#3 Tom Demyan
Tom Demyan
Reputation 900
View All

Related Models For Sale

Used Chevrolet Camaro"
509 Great Deals out of 30,071 listings starting at $1,900
Used Ford Mustang"
744 Great Deals out of 31,402 listings starting at $1,800
Used Porsche 911"
137 Great Deals out of 4,258 listings starting at $11,950
Used Dodge Viper"
6 Great Deals out of 352 listings starting at $26,990
Used BMW M3"
46 Great Deals out of 1,081 listings starting at $4,199
Used Jeep Wrangler"
352 Great Deals out of 42,092 listings starting at $1,800
Used BMW 3 Series"
1,006 Great Deals out of 37,649 listings starting at $1,200
Used Mercedes-Benz SL-Class"
104 Great Deals out of 2,962 listings starting at $4,595

Used Cars For Sale

2015 Chevrolet Corvette For Sale
10 Great Deals out of 1,681 listings starting at $53,746
2014 Chevrolet Corvette For Sale
31 Great Deals out of 888 listings starting at $49,991
2013 Chevrolet Corvette For Sale
16 Great Deals out of 431 listings starting at $29,944
2012 Chevrolet Corvette For Sale
12 Great Deals out of 317 listings starting at $28,983