I'm working on a 87 Camaro (305/carb) and I noticed that it has a mechanical pump on it and an electric pump in the tank.

I've never seen both on one car. (stock) Of course I've never looked before either.

Is this normal??

------------------
ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

I have heard of such things though I have never actually seen one. It was probably done so the factory didn't have to stock 2 different part #s of gas tanks.

------------------
"So many Mustangs, so little time..."

 

It is called a "lift" pump, and diesels have them also the feed the injection pump. Prior to '87 (so I hear) only L69 motors had them, but in '87 (last year for the carb), all the carbed engines got them. If you pull it out, you will notice that its half the size of a regular pump.

------------------
If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey, 22# injectors,
JET AFPR, Ported Plenum,
TB Coolant Bypass,
SSM SFC, Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
KYB Shocks
-->14.97 @ 94.9 MPH<--

'97 Bonneville SSE

 

Cool.

The cust. complaint was that they hear this noise that they never heard before after they shut the car off.

I learned something today.

------------------
ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

 

Once in a while I'll hear my fuel pump run for a few seconds after I shut the car off.. maybe it has something to do with oil pressure that's still high enough to run the pump? I know in this cold, my mechanical oil pressure gauge will drop slowly enough to still stay high for a second or two after I shut the car off.


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

I sure learned something today, too. I never would have guessed.