Not sure on the LT-1 but on the L98 the plenum has to come off. Figure
2 to 3 hours, the valve and gaskets. $ 285 is in the ballpark.
Before leaping into the job, check out the electrical and vacuum
connections. The EGR can hang due to a bit of carbon accumulation on
the valve pintle. Guys have been successful in breaking this loose by
manually moving the valve up and down.
I broke one loose with a bansai drive. Get the engine warm, run a bunch
of 1/8 mile accels/decels or find a good upgrade do alternating WOT and
throttle closed decels.
'89 Hookercar '02 e-blu coupe
1/2 hour on our 95, but I painted the replacement flat black to match
the original and had to wait while the paint dried. Back by the
firewall, 2 nut accessible by box end wrench, and the vacuum hose just
pulls off. Relatively snug so a ratcheting box end would go faster, 9/16
if memory serves correctly. Watch the gasket.
well my buddy couldn't wait until sunday for me to check it out so the
garage charged him $125 to install the new EGR he bought and reset the
MIL. to his chagrin it only took them 1/2 hour total and it was by the
firewall like you said. thanks to all who replied.
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