dual capacity accelerator pump? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*1FaastC10* · 10-11-2003, 03:05 AM

i've got a Quadrajet with the electronic dual capacity accelerator pump. what would happen if i ran it without being plugged in? woudlnt it jsut run like a regular QJet?

**swervin ervin** · 10-11-2003, 09:40 AM

No, it would work just the opposite. The way it works is it is in dual capacity operation when cold. When the engine reaches around 160, the solenoid opens and functions as single capacity. So in other words, it would always be squirting extra gas in.

*1FaastC10* · 10-11-2003, 11:48 AM

well, extra gas means extra power, right?

i think the ol 305 needs all she can get!

looks like i'm EBaying for a QJet then. unless someone has one?

mhorning · 10-11-2003, 12:51 PM

Jeremy

is that the m4med?

*1FaastC10* · 10-11-2003, 07:43 PM

uhm, i dunno, is it? its a Quadrajet with that stupid little electrical plug on the top.

**swervin ervin** · 10-11-2003, 08:56 PM

Yes, it's a M4MED q-jet.

mhorning · 10-11-2003, 09:22 PM

I have an extra that I bought from one of the guys on here a few months ago. I thought my truck was going to need one, but it turns out that the carb wasn't the problem. I paid 75 for it. I was told that it worked fine when it was removed, but I haven't actually tried it out. If you're interested, I can send it to you. If it turns out the carb doesn't work, I'll send you the money back. Of course, if it were me, I'd use it as an excuse to get the edelbrock 1904

.

*1FaastC10* · 10-11-2003, 09:52 PM

i appreciate the offer, but what i've done is eliminate the system altogether. it was tied in with the ESC, the only thing remaining from the ESC is the hole in the firewall and the control module under the dash, because i havent got around to pulling it out yet.

crackajacka · 10-11-2003, 11:52 PM

ive got my old 305 if anyone wants it come and get it and it shall be yours.

mhorning · 10-12-2003, 12:06 AM

so what else did you have to remove? Can you use your old distributor? I only ask, because, I think I will wind up doing the same thing eventually.

crackajacka · 10-12-2003, 12:17 AM

ask swervin ervin about that i think hes got instructions on how to do that

*1FaastC10* · 10-12-2003, 03:21 PM

i could've used the old distrubutor, but since i thought i had a bad one i put a standard vac advance HEI in it. if you remove it, you'll also have to rewire the TCC lockup as its part of that harness if i remember correctly.

10-11-2003, 03:05 AM	#1
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	dual capacity accelerator pump? i've got a Quadrajet with the electronic dual capacity accelerator pump. what would happen if i ran it without being plugged in? woudlnt it jsut run like a regular QJet?

10-11-2003, 09:40 AM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	No, it would work just the opposite. The way it works is it is in dual capacity operation when cold. When the engine reaches around 160, the solenoid opens and functions as single capacity. So in other words, it would always be squirting extra gas in. __________________ Mike 1985 Chevy C-10

10-11-2003, 12:51 PM	#4
mhorning Registered User Join Date: Jul 2003 Location: Corning, NY Posts: 158	Jeremy is that the m4med? __________________ 63 Chevy C10 86 Chevy K10

10-11-2003, 09:22 PM	#7
mhorning Registered User Join Date: Jul 2003 Location: Corning, NY Posts: 158	I have an extra that I bought from one of the guys on here a few months ago. I thought my truck was going to need one, but it turns out that the carb wasn't the problem. I paid 75 for it. I was told that it worked fine when it was removed, but I haven't actually tried it out. If you're interested, I can send it to you. If it turns out the carb doesn't work, I'll send you the money back. Of course, if it were me, I'd use it as an excuse to get the edelbrock 1904. __________________ 63 Chevy C10 86 Chevy K10

10-11-2003, 11:52 PM	#9
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	ive got my old 305 if anyone wants it come and get it and it shall be yours. __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

10-11-2003, 11:48 AM	#3
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	well, extra gas means extra power, right? i think the ol 305 needs all she can get! looks like i'm EBaying for a QJet then. unless someone has one?

10-11-2003, 07:43 PM	#5
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	uhm, i dunno, is it? its a Quadrajet with that stupid little electrical plug on the top.

10-11-2003, 08:56 PM	#6
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Yes, it's a M4MED q-jet.

10-11-2003, 09:52 PM	#8
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	i appreciate the offer, but what i've done is eliminate the system altogether. it was tied in with the ESC, the only thing remaining from the ESC is the hole in the firewall and the control module under the dash, because i havent got around to pulling it out yet.

10-12-2003, 12:06 AM	#10
mhorning Registered User Join Date: Jul 2003 Location: Corning, NY Posts: 158	so what else did you have to remove? Can you use your old distributor? I only ask, because, I think I will wind up doing the same thing eventually. __________________ 63 Chevy C10 86 Chevy K10

10-12-2003, 12:17 AM	#11
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	ask swervin ervin about that i think hes got instructions on how to do that __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

10-12-2003, 03:21 PM	#12
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	i could've used the old distrubutor, but since i thought i had a bad one i put a standard vac advance HEI in it. if you remove it, you'll also have to rewire the TCC lockup as its part of that harness if i remember correctly.



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