87S4 won't start, East Bay CA mechanic!?
02-03-2005, 08:44 PM
#31
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I think Heinrich is correct, as the valve is I also believe for the charcoal canister..
There are many vacuum lines under the manifold that could be brittle and have cracked with age.. I replaced a bunch of them, and my car thanked me for it.. The IAC also has a hose that comes out the driver's side of the intake plenum thay forms a Y fitting to the line from the brake booster.. That may have wiggled loose.. Check the 4 way and 5 way Vacuum Tees for cracks. There could also be a leak on the vacuum line that goes from the flappy controller out to the switchover valve on the front of the engine... If you have one brittle line, chances are many more need replacing...
If you have spark, and fuel, it most likely is a vacuum leak... You should also change the in-tank filter if you have not already done so.. Mine was crudded over when I changed it recently..... Every little bit helps...
HTH, Good Luck,
There are many vacuum lines under the manifold that could be brittle and have cracked with age.. I replaced a bunch of them, and my car thanked me for it.. The IAC also has a hose that comes out the driver's side of the intake plenum thay forms a Y fitting to the line from the brake booster.. That may have wiggled loose.. Check the 4 way and 5 way Vacuum Tees for cracks. There could also be a leak on the vacuum line that goes from the flappy controller out to the switchover valve on the front of the engine... If you have one brittle line, chances are many more need replacing...
If you have spark, and fuel, it most likely is a vacuum leak... You should also change the in-tank filter if you have not already done so.. Mine was crudded over when I changed it recently..... Every little bit helps...
HTH, Good Luck,
02-03-2005, 09:56 PM
#33
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Originally Posted by Stevestik
Hey,
Not to hyjack the thread, but do any of you know what relay is the fuel pump relay in an 87 S-4
Steve
Not to hyjack the thread, but do any of you know what relay is the fuel pump relay in an 87 S-4
Steve
928 Specialists has all the relay and fuse charts.
http://www.928gt.com
02-03-2005, 09:58 PM
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Mark:
I'll be able to spend some time on Saturday getting into this further, if you have some time then. We can test vacuum and inspect the fittings and hoses as well as look at other possibilities.
I'll be able to spend some time on Saturday getting into this further, if you have some time then. We can test vacuum and inspect the fittings and hoses as well as look at other possibilities.
02-03-2005, 11:08 PM
#36
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Originally Posted by Mark87AT
Wow! I am surprised no one seems to know what that valve is? Perhaps I should post the pics as a separate "Wutz dis?" thread? M
02-04-2005, 12:24 AM
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Originally Posted by Mark87AT
Bill,
Saturday sounds great! M
Saturday sounds great! M
), drop Mark a line.
02-04-2005, 05:15 PM
#41
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I sent Mark a PM with my email address, offering help but it went unanswered(and apparently unread). I need to hear something definitive before I hit the sack tonight or I'm going to turn off my alarm and catch up on some Z's tomorrow. What I mean by definitive is this: Mark, it's your place. Tell me it's OK to come by, send me directions, and I'll be there. So you guys are starting @ 11?
02-04-2005, 05:54 PM
#43
In case this wasn't added. German Autoworks in Oakland is an excellent shop. Serviced my 88 for the PO and kept all the records for verification of the work. The owner really knows these cars. Just my 2 cents.