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
7,075

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
25

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.

Your Answer

Add photo

Related Questions

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 carGrrl
carGrrl
Reputation 880
#2 Tom Demyan
Tom Demyan
Reputation 760
#3 califcarson
califcarson
Reputation 590
View All

Related Models For Sale

Used Chevrolet Camaro"
561 Great Deals out of 30,998 listings starting at $1,795
Used Ford Mustang"
916 Great Deals out of 27,356 listings starting at $1,500
Used Porsche 911"
141 Great Deals out of 3,291 listings starting at $12,995
Used Dodge Viper"
10 Great Deals out of 253 listings starting at $21,950
Used Mercedes-Benz SL-Class"
99 Great Deals out of 2,677 listings starting at $4,988
Used Ford Mustang SVT Cobra"
14 Great Deals out of 254 listings starting at $3,800
Used BMW 3 Series"
1,320 Great Deals out of 38,023 listings starting at $1,988
Used Jeep Wrangler"
1,178 Great Deals out of 49,385 listings starting at $1,800
Used Ford F-150"
2,871 Great Deals out of 154,833 listings starting at $1,500

Used Cars For Sale

2015 Chevrolet Corvette For Sale
3,042 listings starting at $61,900
2014 Chevrolet Corvette For Sale
39 Great Deals out of 1,320 listings starting at $51,998
2013 Chevrolet Corvette For Sale
10 Great Deals out of 397 listings starting at $31,999
2012 Chevrolet Corvette For Sale
16 Great Deals out of 292 listings starting at $30,800
2011 Chevrolet Corvette For Sale
16 Great Deals out of 338 listings starting at $27,900