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Name this relay or?

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Old Apr 2, 2013 | 01:50 PM
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Default Name this relay or?

I believe this component is connected to my car suddenly not starting--battery, starter, and fuse panel check out fine.

After sifting through the AIM, I was unable to find the component. Location: under center console to the right just and in front of the radio--toward the passenger compartment.

What is the name of this part?




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Old Apr 2, 2013 | 01:53 PM
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windshield wiper motor relay
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Old Apr 2, 2013 | 02:57 PM
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Horn???
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Old Apr 2, 2013 | 03:10 PM
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Please define not starting, it cranks but doesnt catch or you get nothing? Really dont think that relay is related to your problem.
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Old Apr 2, 2013 | 03:13 PM
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Originally Posted by jnb5101
windshield wiper motor relay

Based on where it was located. It's in the AIM in the console section, but says only "relay".

It does not affect starting the car.

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Old Apr 2, 2013 | 03:31 PM
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Ditto...
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Old Apr 2, 2013 | 03:34 PM
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Originally Posted by MelWff
Please define not starting, it cranks but doesnt catch or you get nothing? Really dont think that relay is related to your problem.

I have another post on this topic--the subject line ends with S.O.S.

To summarize that thread, the car was running fabulously. After parking for a stop at my local fitness club, the car would not start--no cranking, no turnover, almost nothing... except for the barely audible pulse tone coming from this relay. The tone --500Hz could be heard when turning the key to start and again when turning the key back to the off position.

Unfortunately, the car was towed back home.

Since then, I tested...
12.3V at battery, 12.1V at starter solenoid, starter will crank over if I cross the terminals, fuses, explored if the ground from the battery came loose from the frame and jumper cable from neg term to frame without success.

Completely stymied. All good suggestions will be followed.
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Old Apr 2, 2013 | 03:58 PM
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Hi bhk,
I believe JNB was right in describing it as the windshield wiper relay.
I'm not sure either how that might affect ignition?
Anything to do with the neutral safety switch? That seems more likely, but I'm not sure about the 'tone'?
Sorry!
Regards,
Alan

Relay: UPC12 Sheet B5 in the 71 AIM
Neutral Safety Switch: UPC12 B6 in the 71 AIM

Last edited by Alan 71; Apr 2, 2013 at 04:06 PM.
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Old Apr 2, 2013 | 04:18 PM
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Is the 12.3 reading when cranking or no load? Do the headlights die when you try to crank the engine?
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Old Apr 2, 2013 | 04:47 PM
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Originally Posted by MelWff
Is the 12.3 reading when cranking or no load? Do the headlights die when you try to crank the engine?
The reading is with no load, and again, the engine does not turn over. Absolutely nothing. The starter will engage when I cross the solenoid's terminals with a screwdriver.

After pulling the WWR, cleaning up, and reinstalling, the pulse tone has disappeared
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Old Apr 2, 2013 | 05:16 PM
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If you have a 4 speed there is a switch on the clutch pedal, on an automatic it's part of the shifter. Both prevent starting when clutch is not depressed or in gear with auto.
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Old Apr 2, 2013 | 05:23 PM
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Originally Posted by MelWff
If you have a 4 speed there is a switch on the clutch pedal, on an automatic it's part of the shifter. Both prevent starting when clutch is not depressed or in gear with auto.
So, this is the neutral safety switch, correct? (i have a manual transmission)

My knowledge about the NSS is a zero on a scale of 1-10. If the clutch is engaged, but the NSS is dead, will the engine not turn over?
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Old Apr 2, 2013 | 05:37 PM
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Originally Posted by bhk2
So, this is the neutral safety switch, correct? (i have a manual transmission)

My knowledge about the NSS is a zero on a scale of 1-10. If the clutch is engaged, but the NSS is dead, will the engine not turn over?
that is correct. bypass the nss but be careful the car will then crank in gear without the clutch depressed. if it cranks then its the NSS
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Old Apr 2, 2013 | 05:51 PM
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You mentioned the starter would crank over when touching the terminals together? If you hooked up a remote starter switch to the starter and battery, can you get the engine to fire? If so, definitely trace backwards from there. If not, then make sure you have fuel, spark, etc. Could very well be neutral safety switch or perhaps something else. The relay you provided photo for is the wiper relay. Can't think of any logical reason why this relay would cause your vette not to start...
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Old Apr 2, 2013 | 07:16 PM
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Originally Posted by spdrcr29
You mentioned the starter would crank over when touching the terminals together? If you hooked up a remote starter switch to the starter and battery, can you get the engine to fire? If so, definitely trace backwards from there. If not, then make sure you have fuel, spark, etc. Could very well be neutral safety switch or perhaps something else. The relay you provided photo for is the wiper relay. Can't think of any logical reason why this relay would cause your vette not to start...
OK, from my other thread on this related topic, I know the battery and starter are fine. The gremlin is somewhere in between. The wiper relay switch wouldn't keep the engine from turning over, but the neutral safety switch will.

My next step is to test that component. Thanks for the help.

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Old Apr 2, 2013 | 11:41 PM
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Default Eureka!

Thanks to this amazing forum for all the help. After testing the leads to the neutral safety switch, I noticed a small rod dangling behind the clutch shaft. This had become dislodged from the NSS--only if I had know I could have fixed it at the fitness club without tools and avoided a tow home.

I found this piece--at the tip of the green pencil that was the culprit.

Again, thanks again to everyone who chimed in to help me.

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Old Apr 3, 2013 | 01:44 PM
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According to the drawing, that is the wrong type of retainer for that rod. If there is a groove around the rod it is designed for the clip shown in the drawing. However, the type of retainer you found is normally pretty difficult to remove.
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Old Apr 3, 2013 | 01:58 PM
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There is probably a fusable link in the starting circuit. Engine harness, down near the solenoid. Yours could be bad.
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Old Apr 3, 2013 | 03:32 PM
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Originally Posted by bhk2
Thanks to this amazing forum for all the help. After testing the leads to the neutral safety switch, I noticed a small rod dangling behind the clutch shaft. This had become dislodged from the NSS--only if I had know I could have fixed it at the fitness club without tools and avoided a tow home.

I found this piece--at the tip of the green pencil that was the culprit.

Again, thanks again to everyone who chimed in to help me.

I had the same problem with my 4 speed. Looking at your picture I unplugged the connector by #3 clip and jumper-ed it with a heavy gauge wire, works fine now but like someone else said be careful because it will now start in gear

Last edited by AirborneSilva; Apr 3, 2013 at 03:35 PM. Reason: new info
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