Question about 1984 Cadillac Eldorado

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1984 cadillac eldorado has no power going up hills

Mostly on hot days, cannot pull a hill. Almost like it vapor locks, but it's fuel injected. The motor will die, but then start right back up. If you start slow, it will go to about 35mph, then die again.

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  • 15 Answers

Fuel filter??... convcatalytic converter???????...tune up???

Posted on Feb 13, 2014

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Posted on Jan 02, 2017

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SOURCE: 1989 Cadillac Eldorado dies right after I start it

you could see if you have a friend that could help you bye starting the car for you and you need to un hook the top of air box as if you were going to change the breather take a small coke bottle and pour about 1 cup of gas in your bottle hold your breather hose up and pour about 1/2 shot glass gas down the hose and see if that alows it to continue to run if it does you may have a bad or weak fuel pump but I will warn you to be careful when dealing with gasoline do not go to overboard use your best judgement

Posted on Mar 01, 2009

  • 255 Answers

SOURCE: Vapor lock

Hi, replace gas cap.....

Posted on Aug 24, 2008

  • 5 Answers

SOURCE: my cadillac deville has a code PO85 on it what does it mean

You just need to clean the throttle body. Take the air duct off and hold the throttle blades wide open (engine off). Spray the throttle bores beneath the blades with carb cleaner and scrub with an old tooth brush. clean the back side of the throttle plate also. The junk and gunk is plugging up the air flow past the blade at closed throttle and the idle speed control is running out of authority to open the blade. It just needs a thorough cleaning. Disconnect the negative battery terminal for 30 seconds when you are done to reset the idle learn offsets.

While you are in there and have the blades of the throttle body wide open....see those two tubes sticking up at you from the floor of the manifold?? Those are the EGR delivery tubes and they are NOT supposed to be full of carbon.... Rod them out with a piece of stiff coat hanger wire and carb spray to get them cleaned out.

Posted on Mar 12, 2012

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1 Answer

Loss of power on hills


It Sounds like a possible ignition miss if the vehicle loses power when ever you ask for added power. If only on hills and when the fuelo tank is low that might be a problem in tthe fuel tank at the fuel pump.

Jul 30, 2014 | 1984 Cadillac Seville

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Its possible if you have a carb instead of fuel injection.
The engine would stall and have to sit for a while to cool off before restarting. The carb would in effect run out of gas.

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No power on flat roads or hills


Check the EGR Valve, if the problem is only
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94 Cadillac Eldorado overheating uphill


This actually sounds like your motor is not the problem it sounds as
thougth your transmission is in need of work. if you have flushed your
system also may look at your oil pump system as the change in pitch of the road to climb hills may infact be pulling sludge against the sump
tube screen and plugging the oil pump. these are the only two reasons I can see for this to happen if system only dose this when climbing a hill
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Dec 07, 2012 | 1994 Cadillac Eldorado

1 Answer

1986 Cadillac loses power going up hills. Check engine light comes on. Also pedal hesitation when trying to excellerate up hills


have you looked up the codes? sounds like a clogged filter or bad fuel pump. Either way, have the check engine light looked at.

Nov 12, 2012 | Cars & Trucks

1 Answer

1984 bronco II dies when going up hill


If the vehicle dies going up hill it may need a tune-up or check transmission fluid level to make sure the appropriate levels are set. Sometimes when level is low it creates a hard pull on the transmission when going up hills.

Nov 28, 2010 | 1984 Ford Bronco II

1 Answer

Same thing here!!!!


Nope... vapor lock has been eliminated for some time due to the advent of fuel injection at 40 to 50 lbs.... The problem still could be the fuel pump.. you need to have it diagnosed by a professional technician - then you'll know for sure.

Jun 18, 2009 | 2001 Hyundai Tiburon

2 Answers

Car died and wont start


The fuel injector motor or called the Idle Air control module is not the failure. The fuel pump is overheating and dies out. Thus when letting sit a while the engine is starting up again.
I woult take vehicle to local shop and have them replace the fuel pump , I suggest not getting taken for a complete tune up. Just the fuel pump is the most cost effective way .

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1 Answer

Vapor lock


Hi, replace gas cap.....

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