Question about Cadillac Eldorado

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My 1984 cadillac eldorado is running too rich

What do I adjust to lean it out?

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1 Answer

Can't adjust anything-- it is fuel injected

May be able to adjust the TPS Sensor, but
I doubt that will be part of the lean codes
or whatever you have

May have to mail the injectors away to be cleaned
& flow tested

Have to check for OBD1 Codes,first

Have to check,test & possibly replace the oxygen sensor

Have to test the CTS -coolant temp sensor, to make sure it goes
into closed loop & you have control over the fuel delivery

Too lean-- is either a RICH condition being corrected by ecm
or a vacuum leak & thus lean condition

Many other items & reasons as well

You will need vehicle experience with OBD1 Systems
& an understanding of the DFI Fuel System on the caddy
to work on it.

You say running too rich,what testing told you that?
Too lean & being driven rich, so that are the codes you see !
Dirty worn out injectors-too rich
Fuel Pressure regulator failed-too rich

There is good video on rebuilding a throttle body on
You Tube Video, you can watch & see about pressure
regulators & injectors on your type system

Check every vacuum hose in the engine compartment FIRST
for vacuum leaks

Do not forget about worn out & partially blocked exhaust converters
& clogged gas filters,not related maybe, but still have to be working
properly

Posted on Mar 29, 2014

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SOURCE: My 351 is running rich

use the air and gas flow adjustments on the side of the carburator to adjust the rich/lean flow of gas. there is a srew on each side of the carb to adjust one is for air the other for fuel. the one on the driversside is for the fuel and the one on the passenger side is for air. you have to turn them slowly til you get the desired results

Posted on Feb 17, 2009

cadman000
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SOURCE: "Service Soon" light

Push both OFF and WARM buttons together (and hold for 5 sec.) on the A/C control panel. Read what codes appear . It can be cleared by pushing OFF and HI the same way. Hope this helps

Posted on May 12, 2009

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SOURCE: 84 Eldorado squeaks when driving and stops when i press thebrakes

its time for new brakes..read your owners manual...brakes will tell you they need replacing with squeeks or chirps and these go away when you press the pedal.

Posted on Jul 10, 2009

  • 1 Answer

SOURCE: 93 Cadillac Eldorado turns off

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SOURCE: Could you show a spark plug wire diagram 1984

This should be a a HT-4100 engines. Distributor rotation is counter-clockwise. The driver bank is 1-3-5-7. The passenger bank is 2-4-6-8 from the front of the car. The firing order is 1-8-4-3-6-5-7-2. Just like a small block chevrolet

Posted on May 30, 2010

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