[citrusz]

Did a 1968 GTO with manual transmission get a stop idle/fast idle solenoid on the carb?

If yes, does anyone have one or know where to get one? Picture would be great. Thanks

[north]

not sure about exact applications on 68 GTO's (both my 68's had them but they were both 350hp AC automatic cars). In 69 the only use was with the RA IV and the Sprint OHC regardless of transmission.

The pop up on eBay from time to time, NOS ones pull $150 or so.

[Bet Winner]

Your '68 should have one. I believe all '68 V-8's got one. As North said, the situation was different in '69.

[69gtotom]

Originally Posted by Bet Winner

Your '68 should have one. I believe all '68 V-8's got one. As North said, the situation was different in '69.

I found this post on another forum:
A idle stop solenoid is used with those engines equipped with a long duration camshaft that must idle above 850 RPM. The idle stop solenoid is activated and deactivated from the ignition switch. When you turn off the ignition, the idle stop solenoid retracts and allows the throttle valves to close completely and prevents engine run on. Unless you engine has a problem with run on when you turn off the ignition, you don't need a idle stop solenoid.


I have heard different stories about the stop idle solenoid. I was wondering about the ram air iv set-up and whether they used one. I am not sure if my car should have one or not. I have heard that they are mostly used with A/C cars to counter the load when the compressor is running. I would like mine to kick in from the load of the transmission when the car is put into gear. With the RAIV cam which is super lumpy, when I set up it up so it idles nicely in park then when putting it into drive and engage the brakes then it wants to stall at a stop light or when the brakes are engaged. And don't get me started on the lack of vacuum for the brakes at the light. It can be a real hand full. When I spoke with one of the pontiac guys at the PSMCDR they confirmed that the solenoid was used and attached directly to the ignition. This does not solve my problem.

The only Pontiac engine that used a idle stop solenoid is the 1969-1970 Ram Air IV. Didn't see anything specifically about 68's

Solenoid:
http://www.inlinetube.com/_p/prd14/2...oid---inl14944
Bracket:
https://secure.amesperf.com/qilan/De...A&web_access=Y

[Bet Winner]

My '68 Firebird 400 with A/C has its original idle stop solenoid.

Many of the original type wiring harnesses have the idle stop solenoid wire in them. It is folded back if not used. My '69 RAIII Judge has its wire, and a solenoid works if attached and the ignition turned on, but my Judge did not come with one originally.

[68bird400HO]

The correct application for these idle stop solenoids is:

1968 - all V8
1969-70 - RAIV
1971-72 - 455HO for sure, possibly other motors too

I have personally pulled these solenoids from 68 2bbl Lemans and Bonnevilles in yards. It is the same solenoid but used a different bracket for 2bbls.

[citrusz]

Can someone post a picture of this solenoid? Does it mount on the carb or intake? What is the color of the wire that goes to it? Thanks

[68bird400HO]

Originally Posted by citrusz

Can someone post a picture of this solenoid? Does it mount on the carb or intake? What is the color of the wire that goes to it? Thanks

Here are some ebay auctions showing the correct pieces. First is an NOS solenoid that was out on Ebay. Next link is a repop of the solenoid bracket which attaches to the carb. The picture below is a repop of the solenoid itself which are now available.

http://www.ebay.com/itm/NOS-GM-1967-...JX2wT1&vxp=mtr

http://www.ebay.com/itm/1967-72-Pont...BYM1o0&vxp=mtr

[ponyakr]

This is said to be in a '68 GTO.

https://www.hemmings.com/magazine/mu...O/3728891.html

[Greg Reid]

Originally Posted by citrusz

Can someone post a picture of this solenoid? Does it mount on the carb or intake? What is the color of the wire that goes to it? Thanks

Black wire with a white stripe. It runs down the inner edge of the driver's side valve cover.
I pulled one off a '68 LeMans in the junk yard.

[68ragtop]

My 68 has one. I can post a picture later today. No A/C 400 4spd

[68gtoMN]

Try this

[cuz68]

My 68 has one also.

[Sidponcho]

Originally Posted by 68gtoMN

Try this

how does a voltage regulator get dented like that

[ponyakr]

Originally Posted by Sidponcho

how does a voltage regulator get dented like that

Pulling/installing engine/trans still bolted together, perhaps ?

[68gtoMN]

Originally Posted by ponyakr

Pulling/installing engine/trans still bolted together, perhaps ?

Not sure how that happened. Engine has never been out of that car. Only 55K original miles, last licensed in 1972

[68ragtop]

The Dent looks as old as the regulator. interesting.....

The first time I saw one of those steel vacuum lines on the front of the carb I was scratching my head. it wasn't secured to the top of the carb & looked like it didn't belong there.
who came up with the routing for those?

[Ram Air IV Jack]

[QUOTE=68bird400HO;5692793]The correct application for these idle stop solenoids is:

1968 - all V8
1969-70 - RAIV
1971-72 - 455HO for sure, possibly other motors too

I have personally pulled these solenoids from 68 2bbl Lemans and Bonnevilles in yards. It is the same solenoid but used a different bracket for 2bbls.[/QUOTE

You see most of these solenoids on automatic cars than 4 speed units. I've seen these on 69 RA III cars and not on some others. You can always tell if your 4 spd RA car had a solenoid by looking at the configuration of the original metal tube for the distributor vacuum advance. It was shaped differently to allow room for the solenoid bracket vs. engines without one. I've owned 2 original RA 4 spd cars and neither had the solenoids but had the same original vacuum advance metal tubes.

[Bet Winner]

Originally Posted by Ram Air IV Jack

I've seen these on 69 RA III cars and not on some others. You can always tell if your 4 spd RA car had a solenoid by looking at the configuration of the original metal tube for the distributor vacuum advance. It was shaped differently to allow room for the solenoid bracket vs. engines without one. I've owned 2 original RA 4 spd cars and neither had the solenoids but had the same original vacuum advance metal tubes.

We have had discussions about whether '69 RAIII cars got the solenoids, but most everyone, as far as I can tell, believes that they did not get them. I have hooked one up to my 69' RAIII 4-speed, and it works. But it apparently did not get one. And the metal vacuum line clears the solenoid with the bracket I have.

Can you somehow document any 69 RAIII's having one from the factory? Were they A/C cars?

[north]

All factory literature is clear that only RAIV and Sprint got them in 69. I've never seen an original car with a different engine that had or showed a sign of having had a solenoid.