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retarded air grabber #851429
11/11/10 08:36 PM
11/11/10 08:36 PM
Joined: Jan 2003
Posts: 3,719
Space Station #5
471Magnum Offline OP
master
471Magnum  Offline OP
master

Joined: Jan 2003
Posts: 3,719
Space Station #5
The Air Grabber on my 72 Roadrunner is a bit S L O W.

Actually, it is delayed. After hitting the switch, it takes a good 10 seconds before it starts to open. Actually opens reasonably fast once it makes up it's mine to do it. It flips shut quickly without the delay.

What gives? Everything is hooked up right. No obvious vacuum leaks. No hissing.


-Jim

I can fix it... my old man is a television repairman.
He's got the ultimate set of tools... I can fix it.

Currently Mopar-less
Re: retarded air grabber [Re: 471Magnum] #851430
11/11/10 09:36 PM
11/11/10 09:36 PM
Joined: Jan 2003
Posts: 5,445
So Cal
Sinitro Offline
master
Sinitro  Offline
master

Joined: Jan 2003
Posts: 5,445
So Cal
How many inches of vacuum do you have @ idle?

Just my $0.02...

Re: retarded air grabber [Re: Sinitro] #851431
11/11/10 09:51 PM
11/11/10 09:51 PM
Joined: Jan 2003
Posts: 3,719
Space Station #5
471Magnum Offline OP
master
471Magnum  Offline OP
master

Joined: Jan 2003
Posts: 3,719
Space Station #5
Haven't checked vacuum, but very mild cam.

I've actually hit the switch while engine braking to boost the vacuum and it made no difference.


-Jim

I can fix it... my old man is a television repairman.
He's got the ultimate set of tools... I can fix it.

Currently Mopar-less
Re: retarded air grabber [Re: 471Magnum] #851432
11/11/10 10:24 PM
11/11/10 10:24 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
R
RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
R

Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
I'd start by pumping up the nipple on the servo itself w a mityvac/vac pump to narrow down if the prob is the servo or in the vac supply to it


live every 24 hour block of time like it's your last day on earth
Re: retarded air grabber [Re: RapidRobert] #851433
11/11/10 10:28 PM
11/11/10 10:28 PM
Joined: Jan 2005
Posts: 283
Motor City
B
BeeFreak Offline
enthusiast
BeeFreak  Offline
enthusiast
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Joined: Jan 2005
Posts: 283
Motor City
Mine is sort of the same way. Then when you get over 40 mph it flutters.

Re: retarded air grabber [Re: BeeFreak] #851434
11/12/10 02:06 AM
11/12/10 02:06 AM
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY Offline
Truck Nut
340SHORTY  Offline
Truck Nut

Joined: Aug 2003
Posts: 12,291
Kent, Wa
does your vacume can hold vacume ??????


I am truckless..
Re: Slow to react air grabber [Re: 471Magnum] #851435
11/12/10 09:37 AM
11/12/10 09:37 AM
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 75,043
U.S.S.A.
I think you could have chosen better wording for your thread .

Since it runs off vacuum to open you need to look at how much vac you have at idle, if it low because of cam choice I could see this happening .







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