Question about 1987 Chrysler Fifth Avenue

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Engine stumbles 1987 Chrysler 5th Avenue, 120,900 miles, 318 V8, Holley 6282 carburetor. Ports formerly for idle mixture adjustment are plugged. Car driven by little old man with light foot. In last 10 years, car rarely driven. Acceleration in 1st gear is accompanied by engine stumbles. Some very minor stumbling occurs in upper speed and gear ranges and are noticeable. The first gear stumbling seems to lessen with increasing outside temperature, occurs in majority of accelerations from a full stop. Two tankfulls of gas have been augmented with Chevron Techron, which reduced formerly much worse stumbling. Tuneup is not recent, but does not appear to be out-of-date or problematic. I can't find any vacuum in the engine bay and I don't think the Torqueflite tranmission has any vacuum devices (ala Ford's C4 and C6). Mixed driving yields poor gas mileage of approximately 14-15 mpg. Fuel filter getting close to needing replacement. A month ago, I flushed the Torqueflite transmission, the cooling system, and front bearings packed. None of this work (especially the bearings packs) affected the engine stumbles before or after the work. The stumbles are the only sour note in this wonderful old car which I purchased 05/2009 after a car wreck in which my previous car was totaled and my finances were destroyed. I've been unemployed for 2 years and have little money. I'd appreciate your thoughts. Thank you.

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Especially with the little old man driving, not getting fully heated up for 10 years the converters never get fully cleaned on that car. three on it all together, after dark, run about 15-25 minutes, look under the hood at where the y-pipe connects to manifolds, and under center exaust, look for glowing red, clogged converter. VERY COMMON PROBLEM ON THESE>

Posted on Sep 21, 2009

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You mite try searhing in the air department maybe try spray bottle soapy water 2 guys ...run motor all rpms spraying soap all over intake gaskets air lines ect..... either you find blowing {bubbles}.. or sucking {disapering}/... hope this gets you moving in the rite direction w/no cost diagnositcs

Posted on Jul 21, 2009

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1 Answer

Carburetor diagrams deni pd24jh


Did you adjust the idle mixture screws ? Is this a two or four barrel carburetor and what make carb. Carter , Holley, Quadrajet etc.. What make vehicle is it ? Normally the idle mixture screws should be opened 1 and a half turns to two turns . counterclockwise from fully seated . Then you can set the idle screw to what the idle should be 600 rpm to 750 in drive . Most cars have a decal somewhere under the hood telling all these things !

Aug 14, 2014 | Cars & Trucks

1 Answer

How do you set the idle


There are all kinds of adjustments on that vehicle. Also, it depends on which carburetor it is equipped with. That vehicle came with a Rochester 2-barrel carb, a Rochester Quadrajet carb, or a Holley 4- barrel carb. There is not enough time or space to post all of the information about this here. I would recommend going to alldatadiy.com and subscribing to the service information for your vehicle for a small annual fee, or purchacing a manual like Chilton or Haynes.

May 18, 2012 | 1987 Chrysler Fifth Avenue

1 Answer

Carburetor idle mixture adjustment for lean burn chrysler engines


On a carbureted engine(the days of old) I had a method of my own
which always seemed to do really well.
Warm up the engine to operating temperature and make sure there is no
operation of the automatic choke.This should mean that the choke flap in the top of carb is standing vertically offering no resistance to airflow.
Hook up a tachometer if the car has'nt got one.
Note the idle speed in PARK.
Turn the fuel/air adjusting screw underneath carb's right or left sideI(NOT the idle speed set screw) IN and note the rpm as you do.If it raises a little,you are getting close.
Go ahead and turn that screw in all the way and lightly seat it(count the turns in from the highest idle reading),then back it out to the highest reading.NOW turn it in slowly until you see the RPM drop slightly.
Now back it out a little so you are at peak RPM again.
REPEAT this with the other side's fuel/air screw.
After you have gained this higher RPM (maybe), then set the idle speed control screw to desired RPM, and be sure to get in the car and while holding the brake,put the car in DRIVE to make sure the idle doesn't drop too low. don-ohio (:^)

Nov 17, 2011 | 1986 Chrysler Fifth Avenue

1 Answer

I have a 1987 Chrysler fifth Avenue with 318 engine i just need a drawing of the firing order for the spark plug wires


The firing order on a 318 is 1 8 4 3 6 5 7 2, the drivers side bank is 1 3 5 7 front to rear and the passenger side bank is 2 4 6 8 front to rear.

Apr 03, 2011 | 1987 Chrysler Fifth Avenue

1 Answer

My car went from 30 miles a galllon to 20 miles a gallon it seems over nite


most likely suspect is the carb

However, I'd start with your basic tune-up first...
  • replace spark plugs
  • replace spark plug wires
  • replace Dist cap and rotor
  • replace fuel filter
  • replace air filter
  • change oil
  • adjust timing and base idle speed
  • adjust fuel mixture (if available)
Cheers

Jun 06, 2010 | 1987 Chrysler Fifth Avenue

1 Answer

#1 spark plug wire for 83 Chrysler 5th ave 318


On a 318 #1 is at 6:00 o'clock on the distributor when you are looking at it from the front of the car. It turns clockwise and the firing order is 1-8-4-3-6-5-7-2. Odd cylinders are on the driver's side starting from the rad and even on the passenger's. Hope this helps.

May 09, 2010 | 1987 Chrysler Fifth Avenue

1 Answer

Excessive steering play.


Yes it could be all of those and more. But, only an inspection by a mechanic with the car up on a lift will tell you.

Nov 22, 2009 | 1987 Chrysler Fifth Avenue

2 Answers

Chevy


Try adjusting your air/fuel mixture screws. Turn them all the way in and turn them back out 1 and a half turns. This will base line you. Double check for vacuum leaks at the carb. and intake. Spray some WD 40 along the intake where it meets the heads and see if your engine idle changes. If it does, replace you intake gaskets with a good set. Replace carb. mounting gasket. Check for any unplugged vacuum ports. Once you're able to idle it down to 1000 rpm's, turn your mixture screws in until the engine stumbles and turn screws back out until the engine achieves the highest rpm and turn in again only at a 40 rpm drop.

Jun 22, 2008 | 1997 Chevrolet K1500

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