1994 ZR1 Not getting full power (32valves) when key turned to "full" - ZR-1 Net Registry Forums

ericbwood · 09-20-2008

I have been trying to figure this out for a long time. Even when the valet key is turned to full I can't feel the difference between it being off and on -- ie. no power difference either way. I had the EGR valve replaced (twice) by a dealer after they determined that was the culprit but it still does the same things. Usually the "service soon" light will come on. I read that the vacuum pump in the front passenger side below the headlight should come off when I put my finger on the secondary vacuum line after disconnecting it. Should the pump turn on when the vacuum line is connected and I have the ignition turned to "ON" but the engine is not yet on? I don't know if it is a vacuum line issue or something else. I may have the original spark plugs and wires as well so perhaps that is causing an issue. The dealer said it looked good but I am skeptical. The car has 39,000 miles on it.

Any ideas or suggestions on who to call. I live in Hawaii so I don't know of any good places to take it in here.

Thank you!

09-20-2008	#1
ericbwood Join Date: May 2006 Posts: 5	1994 ZR1 Not getting full power (32valves) when key turned to "full" I have been trying to figure this out for a long time. Even when the valet key is turned to full I can't feel the difference between it being off and on -- ie. no power difference either way. I had the EGR valve replaced (twice) by a dealer after they determined that was the culprit but it still does the same things. Usually the "service soon" light will come on. I read that the vacuum pump in the front passenger side below the headlight should come off when I put my finger on the secondary vacuum line after disconnecting it. Should the pump turn on when the vacuum line is connected and I have the ignition turned to "ON" but the engine is not yet on? I don't know if it is a vacuum line issue or something else. I may have the original spark plugs and wires as well so perhaps that is causing an issue. The dealer said it looked good but I am skeptical. The car has 39,000 miles on it. Any ideas or suggestions on who to call. I live in Hawaii so I don't know of any good places to take it in here. Thank you!