Air Grabber not working
#1003881
05/31/11 05:56 PM
05/31/11 05:56 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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OK guys... On a 1970 Plymouth Air Grabber...It doesn't work...
Where do I start the diagnoses ?
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Re: Air Grabber not working
[Re: A12]
#1003884
05/31/11 07:00 PM
05/31/11 07:00 PM
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Joined: Jan 2003
Posts: 16,619 Almost Heaven
B_Body_Bob
Master of nothing
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Have you hooked the actuator direct to manifold vaccuum and see if it works yet?
The closing relay could be stuck open. Listen under the dash for the giant sucking sound.
But, based on your past wiring posts, I'm leaning toward "you hooked it up wrong" If you don't hear it sucking air, there ain't much else can be wrong.
Everybody makes fun of a hillbilly until they need something fixed
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Re: Air Grabber not working
[Re: B_Body_Bob]
#1003885
05/31/11 07:04 PM
05/31/11 07:04 PM
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Joined: Jan 2003
Posts: 16,619 Almost Heaven
B_Body_Bob
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You might need the attached file. You'll have to zoom in on it I reckon.
Everybody makes fun of a hillbilly until they need something fixed
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Re: Air Grabber not working
[Re: B_Body_Bob]
#1003886
05/31/11 07:15 PM
05/31/11 07:15 PM
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Joined: Jan 2003
Posts: 18,632 jersey shore
flypaper
I hate Texas
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I hate Texas
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Quote:
But, based on your past wiring posts, I'm leaning toward "you hooked it up wrong" If you don't hear it sucking air, there ain't much else can be wrong.
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Re: Air Grabber not working
[Re: gtx6970]
#1003890
06/01/11 04:32 PM
06/01/11 04:32 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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So with the engine running can I un-plug the hoses from the switch and "feel" or hear the vacuum ?
Right now there's no "sucking" sound inside the car anywhere.
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Re: Air Grabber not working
[Re: flypaper]
#1003891
06/01/11 04:36 PM
06/01/11 04:36 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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The engine vacuum goes into the storage canister...Can I bypass the canister to eliminate that as a problem ? Will the system work without it?
I'm wondering now if this Hemi creates enough vacuum? I'm hooked into a fitting directly on the back of the intake.
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Re: Air Grabber not working
[Re: anlauto]
#1003892
06/01/11 04:50 PM
06/01/11 04:50 PM
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Joined: Jan 2003
Posts: 18,632 jersey shore
flypaper
I hate Texas
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I hate Texas
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Posts: 18,632
jersey shore
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Quote:
The engine vacuum goes into the storage canister...Can I bypass the canister to eliminate that as a problem ? Will the system work without it?
I'm wondering now if this Hemi creates enough vacuum? I'm hooked into a fitting directly on the back of the intake.
checking to see if you have good vacuum at the source with a vac gauge would be a good place to start
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Re: Air Grabber not working
[Re: anlauto]
#1003893
06/01/11 04:53 PM
06/01/11 04:53 PM
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Joined: Jun 2003
Posts: 21,507 It's a dry heat
gtx6970
Too Many Posts
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Too Many Posts
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Posts: 21,507
It's a dry heat
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Quote:
Can I bypass the canister to eliminate that as a problem ? Will the system work without it?
Yes
Run a hose straight from the intake fitting to the hood mounted actuator, if it works. You have enough vacuum to operate the system, and your problem lies elsewhere.
if it doesn't, you either have low vacuum ( you ck'd it I assume ? ) or a bad actuator
If The car I just finished works it, yours should. As it only takes maybe 5 inches or so of vacuum to operate the actuator. I assume you don't have a hand held vacuum pump?
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Re: Air Grabber not working
[Re: A12]
#1003894
06/01/11 06:21 PM
06/01/11 06:21 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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First off Bill, thank you for your help...
I'm outta time tonight because of kids soccer...but here's what I've found...
Hooked the engine directly to the actuator and it works fine.
By-passed the canister and there's no difference.
Tomorrow I'll get under the frickin dash again...
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Re: Air Grabber not working
[Re: 70SportSatellite]
#1003897
06/03/11 10:49 PM
06/03/11 10:49 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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This type of trouble shooting has been a GREAT help.... Info like this can't be found in any service manual. I'll get on it again hopefully tomorrow, thank you.
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Re: Air Grabber not working
[Re: anlauto]
#1003900
06/04/11 04:14 PM
06/04/11 04:14 PM
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Joined: Jan 2003
Posts: 11,854 Georgetown Ontario Canada
anlauto
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Well I'm 100% certain it's the switch. I made a little jumper hose with two small metal tubes on each end. With the system completely hooked up and the engine running I unplugged the switch. Using my new little tool I plugged into the green hose and white hose and the air grabber opened, then green to black and it closed, so I pretty much know it's the switch. I bought it a year ago, but the company I bought it from said they will send a new one free of charge...
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