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Old 02-12-2010   #1
richard sanderson
 
Join Date: Jan 2010
Location: sotogrande spain
Posts: 38
Default help please for a new member

Hi Everyone, I would like some advice if that would be possible. Especially as I live in the south of Spain, so I am obliged to do all my own mechanics - nobody round here has even heard of a ZR-1! (Mind you, if someone feels insulted by this comment, please get in touch and I will give a grovelling apology, and be very grateful for any help they might be able offer). Anyway, the first problem I had to fix was that the Src light had been taken out, so although the suspension was naz, no codes were set. But after having to pull the dic and rearrange the lights in the proper place, I now have got that bit sorted and can get on with fixing the ride. Next the secondary vacuum doesn't seem to behave correctly. When the ignition is on but the engine is not running, the pump runs continuously. If I unplug the pipe from the pump, and block it off with my finger, it runs in little bursts, say 1 second on then 3 second off. I assume something is wrong under the plenum. So I have printed out the Big Country Corvettes instuction sheet, and am preparing to assemble all the bits I will need for a plenum pull. Item 5 in the removal procedure says remove the vacuum hose with a flat blade screwdriver. But idly fiddling around with things while going over these instructions on the car, I gave a very slight tug on this pipe, it came off the rubber tubing that goes into the plenum. Should this rubber tube be removed from the plenum, or could this be the cause of my leak anyway? Also, looking through other posts, I am unsure whether this secondary vacuum system is actually necessary to get into full power. Can full power mode be acheived without this part of the system working? I dont want to tie the secondaries open. I am too much of a purist to want to cheat on something like that. Any comments welcome! Richard - 1990 #231
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