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Phoenix914 |
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#1
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
Last night I tried to start my 914 to move it out of the garage...and it didn't start. When I turned the key, the auxiliary fan came on because the lever was pulled back. I turned off the fan, then proceeded to start the engine and it just cranked. I turned off the key, then turned it to the on position. This was when I noticed the fuel pump didn't come on. Why? During my check I discovered the rear fuse of the two on the relay board in the engine compartment was blown. A little research told me that this fuse is for the fuel pump and aux. fan.
So, I disconnected the fuel pump, put in a new fuse and it blew when I turned the key. Another new fuse, reconnected the fuel pump, disconnected the aux. fan, turned the key and the fuse blew again. It's not the fan. What is causing this? I drove the car in there less than two weeks ago!! It's strange that the aux. fan came on the first time I turned the key. Now it won't work with the fuse blown. Somebody please help me. I have to move everything out of this rented garage tomorrow. This includes my 914. I'd rather not have to tow it if that can be avoided. |
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SirAndy |
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#2
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Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
fix the short ...
it's probably the aux. fan and/or switch. disconnect the fan first, look for obvious signs, like cracked/exposed wires. also, the connector on the switch is dangerously close to ground and can easily shorten out. unbolt the switch and test with switch removed. (IMG:style_emoticons/default/smash.gif) Andy |
McMark |
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#3
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
It's the wire that powers the AAR. It's shorting out.
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Phoenix914 |
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#4
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
OK. I'll take the switch out. I figured disconnecting the fan wiring back at the fan would take it out of the equation, but maybe that's not enough.
Thanks. |
SirAndy |
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#5
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Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
It's the wire that powers the AAR. It's shorting out. forgot about that one. that's on the same circuit as well ... (IMG:style_emoticons/default/thumb3d.gif) Andy |
Phoenix914 |
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#6
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
Cool. Where the heck is it? (IMG:style_emoticons/default/sad.gif)
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SirAndy |
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#7
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Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
red wire, going to the AAR ... post a pic of your engine bay! (IMG:style_emoticons/default/idea.gif) Andy |
McMark |
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#8
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
White wire that comes out near the distributor. It's in the same bundle as the tach wire (black/purple), coil wire (black), and oil pressure switch wire (green/red).
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SirAndy |
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#9
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Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
White wire that comes out near the distributor. huh? on my '70 1.7L, the wire was red, not white ... (IMG:style_emoticons/default/confused24.gif) Andy |
Phoenix914 |
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#10
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
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McMark |
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#11
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
Andy, it might be red on the early cars.
The AAR is the canister that mounts right near the air box and has two largish air hoses, one coming from the filter housing the other going to the plenum. |
Phoenix914 |
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#12
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
Ok, thanks. I'm off to see if I can fix it. I'll report back later. (IMG:style_emoticons/default/beer.gif)
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Spoke |
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#13
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Jerry ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 6,992 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None ![]() ![]() |
You could try removing both relays for the fan and the fuel pump and see if the fuse still blows. If it does, it's probably not either of those. If the fuse doesn't blow, replace one at a time to isolate the issue.
Disconnect the fan and fuel pump and check. I doubt it's the fan switch by the shifter since it grounds the negative side of the relay thus even if shorted to ground, will not cause a short. Spoke |
JeffBowlsby |
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#14
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914 Wiring Harnesses ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 8,533 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None ![]() ![]() |
Its a red wire coming out of the AAR (all years), connecting to a white wire on the ignition harness with a long single pole box housing.
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Spoke |
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#15
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Jerry ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 6,992 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None ![]() ![]() |
What is an AAR? I've seen AAR several times. All American Rejects, that is. They rock (IMG:style_emoticons/default/aktion035.gif)
Spoke |
McMark |
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#16
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
Auxiliary Air Valve, basically it's a controlled air leak to keep the idle high while the motor is cold.
Jeff, thanks for setting us straight. (IMG:style_emoticons/default/thumb3d.gif) |
McMark |
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#17
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914 Freak! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None ![]() |
Wellll............ (IMG:style_emoticons/default/unsure.gif)
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Dr Evil |
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#18
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Send me your transmission! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 23,002 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region ![]() ![]() |
Common gremlin, I even made a schematic (IMG:style_emoticons/default/biggrin.gif)
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Phoenix914 |
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#19
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Member ![]() ![]() Group: Members Posts: 389 Joined: 6-December 06 From: Oviedo, FL Member No.: 7,322 Region Association: South East States ![]() ![]() |
Its a red wire coming out of the AAR (all years), connecting to a white wire on the ignition harness with a long single pole box housing. This is exactly what I found. The wire didn't appear to be grounding anywhere. When I unscrewed the AAR from it's base, the fuse did not blow, the fuel pump worked, and the aux. fan worked. Reattach the AAR to it's base and the fuse blows. Is the AAR itself bad, grounding internally? I just left the wire disconnected and drove it home. Idle stayed high, but it ran fine. |
SirAndy |
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#20
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Resident German ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California ![]() |
Is the AAR itself bad, grounding internally? yupp, the AAR grounds through the engine case. if the fuse blows, the AAR is broken ... (IMG:style_emoticons/default/bye1.gif) Andy |
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