Posts: 446
I was in the relay compartment installing Dave's electronic RPM relay when I noticed an odd relay tucked behind the wire bundle.
what is this relay.jpg
It's a Bosch relay with a push-button taped to the case. Any ideas what this relay and push-button are about?
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Ron
Last edited by DMC-Ron; 05-24-2019 at 06:09 AM.
Location: North GA
Posts: 6,176
Club(s): (SEDOC) (DCUK)
The wire colors match those for the Hot Start relay. The idea was abandoned by DMC...
Location: Bunker Hill, West Virginia
Posts: 724
My VIN: 11035
That would be where the hot start relay would go. Dave sells them too.
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Vin 11035 wide stripe, flat hood, 5 speed, Spec 1 exhaust, custom grey/black interior, custom lighting, custom stereo and custom alot of stuff!
Posts: 446
OK,
I found the hot start relay on the wiring schematic:
hot start relay circuit.JPG
And it looks like the relay socket is orphaned with no connection on one side of the coil. I'm trying to understand the circuit. Was the intent of the relay to provide a ground to the cold start valve? But I'm not sure why someone would add the push-button switch, presumably momentary normally open, between the blue/black and the coil. At least, that's where it looks to be connected?
Ron
Posts: 4,764
My VIN: Banged your VIN'S mom
If I recall Hervey sold a hot start relay that had the push button so you left it plugged in and simply pressed the button whenever you needed it to work. Silly Dave McKeen and his relay just automatically worked after 5 or 6 seconds of cranking. Dave's relay didn't the added simplicity of reaching over the seat, removing the net, carpet, compartment cover, digging through the wiring to press a button so your car would start.
Get with the program Dave
Edit. Yup it's a one man show exclusive item.
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Last edited by Michael; 05-24-2019 at 07:26 AM.
Location: Leonardtown, MD
Posts: 9,004
My VIN: 03572
My hot start relay turns the CSV on after one second of cranking.
Posts: 4,764
My VIN: Banged your VIN'S mom
I stand corrected...still that button looks awfully simple. Pressing it and making my car start makes me feel powerful and smart.Originally Posted by Bitsyncmaster
Location: Northern NJ
Posts: 8,578
My VIN: 10757 1st place Concourse 1998
It is a bit easier that doing the plug swap and if it makes it start right up when the motor is hot, it can confirm a problem with rest pressure. On a well running PRV you should never need the hot start relay (or button).
David Teitelbaum
Location: Florida
Posts: 2,371
My VIN: <2000
Club(s): (DCF)
I took one look at the ahem... "engineering" and thought it was a Hervey special.
If I ever have hot start issues, I'll get Dave McKeens unit.
Dana
1981 DeLorean DMC-12 (5 Speed, Gas Flap, Black Interior, Windshield Antenna, Dark Gray)
Restored as "mostly correct, but with flaws corrected". Pictures and comments of my restoration are in the albums section on my profile.
1985 Chevrolet Corvette, Z51, 4+3 manual
2006 Dodge Magnum R/T (D/D)
2010 Camaro SS (Transformers Edition)
Location: Austin MN
Posts: 580
My VIN: 03500
I took one look at the ahem... "engineering" and thought it was a Hervey special.
If I ever have hot start issues, I'll get Dave McKeens unit.
Ya If you order the pushbutton relay from Hervey he will send you the stupid jumper wire. Well that's what he sent me.
That's all I'll say about that.
Dave B.
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Dave M vin 03572