Forum: C4 ZR-1 General Postings
04-27-2009
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Replies: 14
Views: 1,908
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Forum: C4 ZR-1 Parts For Sale / Wanted
04-22-2009
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Replies: 2
Views: 964
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Forum: C4 ZR-1 Parts For Sale / Wanted
04-22-2009
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Replies: 4
Views: 1,250
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Forum: C4 ZR-1 Parts For Sale / Wanted
04-21-2009
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Replies: 4
Views: 1,250
Re: iac valve and secondary vacuum pump
ok, I`ll post the part number tommorrow, but someone told me that such pumps was used in british ford granada so it could be hard to find it in us.
if the top is not glued or something I`ll remove...
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Forum: C4 ZR-1 Parts For Sale / Wanted
04-21-2009
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Replies: 4
Views: 1,250
iac valve and secondary vacuum pump
Hi guys. while ago I bought an iac valve, and today I bought and secondary vacuum pump. I bought it here in Poland, I found a source where they have them quite a lot in stock for now. those parts was...
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Forum: C4 ZR-1 General Postings
04-20-2009
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Replies: 14
Views: 1,908
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Forum: C4 ZR-1 Technical Postings
04-09-2009
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Replies: 5
Views: 3,237
Re: High idle.
Jeff how to correcly reset iac? and what is iac controller?
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Forum: C4 ZR-1 General Postings
04-09-2009
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Replies: 14
Views: 1,908
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Forum: C4 ZR-1 General Postings
04-09-2009
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Replies: 14
Views: 1,908
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Forum: C4 ZR-1 General Postings
04-09-2009
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Replies: 14
Views: 1,908
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Forum: C4 ZR-1 Technical Postings
04-09-2009
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Replies: 5
Views: 3,237
Re: High idle.
do you have stock chip? from `90? if yes I suggest buying a chip from Mark Haibeck. I bought it around two weeks ago. I have 1990Z and had very high idle. I checked all vacuum conections and it didnt...
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Forum: C4 ZR-1 Technical Postings
04-01-2009
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Replies: 0
Views: 1,403
high idle while driving
I got the MArk Heibeck chip today and I have installed it. works great. mainly I wanted it to get rid of the high idle issue after stop etc. and hot restart etc. its gone now. idle drops down right...
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Forum: C4 ZR-1 Parts For Sale / Wanted
03-12-2009
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Replies: 6
Views: 1,199
WTB C4 front grill
where can I buy grill like this, instead of stock license plate fill
http://www.chromy.com.pl/vette_grill.jpg
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Forum: C4 ZR-1 Technical Postings
03-03-2009
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Replies: 16
Views: 2,729
Re: Deaded Idle Surge?
can anyone see if its a updated bin? what xfire posted?
two days ago when finally weather let me drove the Z, I took a spin. the car runs strong and full power comes on and really pulls great....
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Forum: C4 ZR-1 Technical Postings
03-02-2009
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Replies: 16
Views: 2,729
Re: Deaded Idle Surge?
maybe someone could copy that updated prom and post a file so everyone could burn it because I also know that its no longer availabkle from gm
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Forum: C4 ZR-1 Technical Postings
02-01-2009
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Replies: 36
Views: 6,959
Re: high idle
I hooked up the secondary map corectly and checked all the vacuum hoses, changed check valves. Now the secondary system works! and car pulls great, I think I still has a little vacuum leak but I...
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Forum: C4 ZR-1 Technical Postings
01-25-2009
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Replies: 7
Views: 2,144
Re: Secondary Vacuum Solenoid Question
so the solenoid works. I took off plenum because of high idle issue and some other problems... I bought the car couple of months ago and now I`m trying to take care of all problems. while the plenum...
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Forum: C4 ZR-1 Technical Postings
01-25-2009
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Replies: 7
Views: 2,144
Re: Secondary Vacuum Solenoid Question
http://www.whiteracingproducts.com/images/1997222
Can anyone tell me if mine solenoid works ok?
when not aplied any volts the futher back outlet (on left) doesn`t keep any vacuum or pressure...
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Forum: C4 ZR-1 Technical Postings
01-24-2009
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Replies: 36
Views: 6,959
Re: high idle
I thought ith was the differential sensor but I got confused because I was looking for a sensor with two inlets. differencial as for measuring difrence in pressures. mine isnt connected to anything :/
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Forum: C4 ZR-1 Technical Postings
01-24-2009
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Replies: 36
Views: 6,959
Re: high idle
can anyone post here a vacuum routing schematics?
I found only this one http://www.zr1netregistry.com/gifs/vacuum.jpg
but I cant see for example where secondary map should be conected ?
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Forum: C4 ZR-1 Technical Postings
01-24-2009
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Replies: 2
Views: 2,264
prom burning etc..
I`m having idle issues as descirbed in oter thread and I think I need to update the stock prom to get rid of the problem.
Can anyone guide me a little how to do it?
what type of blank chip to...
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Forum: C4 ZR-1 Technical Postings
01-21-2009
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Replies: 36
Views: 6,959
Re: high idle
if after I drive the car the ecm wants to have good idle rpm like 650 but engine idles high, its a vacuum leak for sure right?
maybe some egr valve or something is turn on and it leaks vacuum...
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Forum: C4 ZR-1 Technical Postings
01-21-2009
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Replies: 36
Views: 6,959
Re: high idle
yes it idles fine until driven. I swapped the iac and tried to reset it as in the book I have. its " corvette fuel injection and electronic management" by charles o. probst. it covers many efi on...
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Forum: C4 ZR-1 Technical Postings
01-21-2009
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Replies: 36
Views: 6,959
Re: high idle
can anyone tell what does he do with the tb ? maybe he puts some sealant there? I`m from europe so sending tb to him would take a lot of time....
I bought a new iac valve, :D, at my friends car...
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Forum: C4 ZR-1 Technical Postings
01-20-2009
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Replies: 36
Views: 6,959
Re: high idle
when I took of plenum I also replaced tb gaskets and cleaned iac, but I didnt even look at the orifice in tb, I clean it and iac once again.
btw, I was reading the board and couple of people...
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