a little input!!

[born lucky]

I am having touble with my 1990 Cadallic Brougham. I have a hard start the mornings but throughout the day its fine. It also has stumbled on me a few times. My ignition is fine. I seem to think its my accelerator pump!
I have Rochester Q-Jet. How easy is it to change the pump. I was thinking of unbolting the air horn and removing the pump , then installing a new pump and then reinstalling the air horn. Is this correct? Are there any things that might get loose and then I am not albe to reinstall the air horn?
Thanks in advance.

 

[john w]

are you sure you have a carburetor on that car? i drove cadillac limousines for many years and i believe they switched to fuel injection in 1980

 

[billymade]

Looks like they have carbs/FI in the same year! I guess the question is which motor do you have?
http://www.partsamerica.com/Vehicle....aspx&Year=1990&make=CADILLAC&Model=FLEETWOOD


Vehicle Trim Level & Engine

Vehicle Year Vehicle Make Vehicle Model Vehicle Trim Level & Engine*

1990 CADILLAC FLEETWOOD

Please select your vehicle's trim level and engine


Trim Level Engine Engine Details

FLEETWOOD
V8 4.5 Liter FI 273 CID VIN 3 O.H.V.

FLEETWOOD 60 SPECIAL
V8 4.5 Liter FI 273 CID VIN 3 O.H.V.

FLEETWOOD BROUGHAM
V8 5.0 Liter Carbureted 307 CID VIN 9

V8 5.0 Liter 4BBL 307 CID VIN Y O.H.V.

V8 5.7 Liter FI 350 CID VIN 7 O.H.V.

 

[Merkava_4]

I have Rochester Q-Jet. How easy is it to change the pump?

I had a 1978 with the 425 and Q-jet. This is your lucky day because I know exactly how to change it.

1. You'll see a roll pin that holds the pump arm onto the bowel cover. Slide that pin out with a small roll pin punch. A regular pin punch will work too. Drive that pin out far enough to clear the pump arm. If the roll pin makes contact with the air horn, cut it with side cutters and then drive what's left of the pin out.

2. Remove the screw holding the hanger for the secondary metering rods and lift the meter rod hanger with the metering rods out.

3. There's a little screw that holds the choke arm to the choke plate; remove it.

4. Remove all the bowel cover screws and carefully lift the bowel cover off.

Note: The roll pins are 7/64 X 3/4L. You might need a new one.

 

[born lucky]

Yes, it's a carb. This is a 5.0 engine which is from Oldsmobile. I beleive this is the last year for carburator engines. The 5.7 engine is FI.

 

[Merkava_4]

You better frickin' say "thank you" for my post or we're through!

 

[Moose-LandTran]

Holy ****! Merkava does know about cars!

 

[born lucky]

Yes. THANK YOU very much.
I do really appreciate your information and all others.
This is why I LOVE the net ,its all one family that has lots of love for all.
Thanks again

 

[Merkava_4]

Yes. THANK YOU very much.

You're welcome. If you have anymore questions, just ask.

 

[garfunkle24]

I had a 1978 with the 425 and Q-jet. This is you lucky day because I know exactly how to change it.

1. You'll see a roll pin that holds the pump arm onto the bowel cover. Slide that pin out with a small roll pin punch. A regular pin punch will work too. Drive that pin out far enough to clear the pump arm. If the roll pin makes contact with the air horn, cut it with side cutters and then drive what's left of the pin out.

2. Remove the screw holding the hanger for the secondary metering rods and lift the meter rod hanger with the metering rods out.

3. There's a little screw that holds the choke arm to the choke plate; remove it.

4. Remove all the bowel cover screws and carefully lift the bowel cover off.

Note: The roll pins are 7/64 X 3/4L. You might need a new one.

That's awesome. 1 hour and 12 minutes later, you know how to do an unknown job.

I wish I had access to such timely info at work.