Possibly OT: 1984 Plymouth Reliant

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William R. Walsh - 07 Jul 2007 04:58 GMT

Hello all...and apologies for the somewhat off topic nature of the question.
Although, if it bothers you, I guess the car can be a Dodge Aries for the
course of this discussion. :-)

I have a 1984 Plymouth Reliant with the 2.6L Mitsubishi engine in it. The
car runs and drives, but it idles entirely too fast and diesels when turned
off. "Punching" the gas when in gear results in a stumbling engine for a few
seconds before the car finally decides to move. An attached tachometer shows
an idle speed of some 2,000 RPM. I have the Chrysler FSM for the car, but
don't really know where to go from here. I'm not even absolutely sure which
type of carburetor the car has on it--neither the standard or feedback type
illustrations match precisely what I have. I did find the throttle position
sensor, which appears to be present on only feedback-type carburetors.

I did ask a nearby mechanic about the car, but he didn't seem all that
interested in working on it and commented only that the "choke isn't
working". I'll confess that I don't know for sure, but the choke plate in
the carb *does* open up when hot and shut when cold.

What I'm looking for are some things to check for, because I really don't
know of anything else to look at. What are the odds that a Chrysler
dealership in this day and age would be able to work on this car?

William

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maxpower - 07 Jul 2007 11:19 GMT

> Hello all...and apologies for the somewhat off topic nature of the question.
> Although, if it bothers you, I guess the car can be a Dodge Aries for the
[quoted text clipped - 20 lines]
>
> William

Its a Mikuni carb and they are high dollar if you can find one. There aren't
to many people that want to work on those things anymore. The problem you
are having is not something that you can get an answer on line. If you
vehicle is idling high and diesels the first thing to check is the throttle
plate. I have 1986 2.6 minivan drivability book to sell for $25 if you
want. e mail if interested.

Glenn

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clare at snyder.on.ca - 07 Jul 2007 20:28 GMT

>> Hello all...and apologies for the somewhat off topic nature of the
>question.
[quoted text clipped - 36 lines]
>
>Glenn

Wax pellet controlled choke, with a gear drive on the fast idle cam
from what I remember of my 95 LeBaron. Tricky to set up properly, and
not terribly reliable at the best of times.
I know guys have put Holley Weber carbs from 2300 fords or Vegas on
and had significant improvements, across the board. Better
driveability and fuel economy with definitely no loss of power
(perhaps an improvement)

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William R. Walsh - 07 Jul 2007 22:53 GMT

Hi!

> Its a Mikuni carb and they are high dollar if you can find one.

Anyone want to buy one that works well enough to let the engine run? :-D

(Yes, that's a joke. Unless you really want one and make a corresponding
offer!)

> The problem you are having is not something that you can get an answer
> on line.

I'm not looking for a cut and dried solution to the problem, just some good
hints that might give me some stepping stones into understanding just how
this carburetor works. I'm not totally stupid (nor am I an expert) about
these things, but this thing is making me feel that way.

Per your suggestion, I'll look at the throttle plate.

> I have 1986 2.6 minivan drivability book to sell for $25 if you
> want. e mail if interested.

What does this talk about, and why would I want it? I'm not trying to be
rude...I just want to know what it might have to say and what I might come
away with.

William

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maxpower - 07 Jul 2007 22:57 GMT

> Hi!
>
[quoted text clipped - 23 lines]
>
> William

In all honesty you probably have problems with the Carb, I don't think you
can get parts for this thing any more and if you can even get a reman carb
it is probably going to be junk from an aftermarket supply house. There are
to many things that can go wrong with this Carb. one is the wax pellet and
many other problems. You may even have a vacuum leak somewhere else under
the hood causing this problem.

Glenn

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truckdriver - 15 Jul 2007 04:06 GMT

On Jul 7, 5:53 pm, "William R. Walsh"
<newsgrou...@idontwantjunqueemail.walshcomptech.com> wrote:

> Hi!
>
[quoted text clipped - 23 lines]
>
> William

the problem with the 2.6 is it has a water choke if i am thinking of
the right motor it is the same motor as the plymouth sapparrio they
had problems with air leaks at the babe of the carb and caused them to
run at hight idle you might want to spray wd40 at the bace and see if
it idles real high

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