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boyt911sc boyt911sc is online now
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Join Date: Mar 2002
Location: Philadelphia, PA
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Air flow sensor switch.........

Quote:
Originally Posted by SickIan View Post
Got the key out finally. Penetrating oil and alot of wiggling. Now i need to look into FP issue..

SickIan,

Now that switch is OK (hopefully), you could go check your FP wiring problem. Just to give you a background how the FP relay works will help you diagnose this problem. The FP relay has 5 terminals namely:
87........gets power when IS @ start.
87a......gets power when IS @ ON/Run.
86........(same as 87a).
85........ground contact for the coil.
30........terminal to FP.

Pull out the relay socket and do the diagnostic at the relay socket.
1). Ign SW @ off-----no power to any of these terminal.
2). Ign. SW @ ON---87a & 86 should have power.
3). Ign. SW @ START---87 gets power at the same time the starter cranks up.

At believe this is where your problem is coming from @ terminal #85. With the IS @ off, check terminal #85 from ground. Use either a continuity tester or a simple test light (lamp) to confirm whether #85 is grounded or not. Keep us posted.

Tony
Old 01-18-2011, 12:18 PM
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