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1989 wrangler hesitates during acceleration after warmed up

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Possible throttle possition sensor

Posted on Jul 19, 2009

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'80 jeep cj5 2.5 engine. Cranks and idles fine. Sputters and hesitates during acceleration. Revs smooth while in neutral. New plugs, wires + accel. Pump.


CJ5 Hesitates when accelerating - JeepsUnlimited

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If it still hesitates I'd say it was a carburetor issue (accelerator pump, power valve..). If it is only acting up when accelerating (while driving) that would tell me it ... 1980 CJ5Renegade with 304 v8 .... The idle mixture screws were nearly 3 turns out, I think i have them somewhere around 2.5 turns right now.

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Reving the engine in gear with the clutch in a bit would load the ... alot longer to warm up and tends to hesitate when pulling away from a ... Jeep rater score from the factory:26, today:238 ..... 92 XJ 155/80r13s and 17"s of lift.Missing: cj5

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https://www.youtube.com/watch?v=0m4IiVzwjzE
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Dec 16, 2015 | Jeep Cars & Trucks

2 Answers

Car gets warm and starts hesitating on acceleration


Hi,
this could be something in the fuel pump. As the cold motor draws more fuel, it may just be just ok for the engine, but after it is warm, it draws less and may "suffocate" it that way. Same goes for air filter, take a peek if it is not ready for replacement. Has this happened suddenly, or has it occurrend during a long perion of time?

Oct 15, 2009 | 1999 Mercury Cougar

1 Answer

Hesitation when cold or after hard acceleration


one of 3 things spark plugs need to be change or wires check for these also you have to check for fuel pump it cause this type of things check the pressure hope it's solved

Jun 06, 2009 | 1989 Isuzu Trooper

1 Answer

89 Jeep Wrangler when I accelerate it hesitate slow down its fine,accelerate it hesitate,and sometimes it will ****


Start by checking the choke. While the hood is up reach in to the carb and give it the gas.If the choke is normal then check your distributor cap for cracks(especially hairline ones,then check your rotor etc.
Best of luck

Apr 02, 2009 | 1989 Jeep Wrangler

4 Answers

88 jeep cherokee hesitates dureing acceleration


clean or replace the crank sensor on the back of the engine that runs off the flywheel

Nov 05, 2008 | 1989 Jeep Cherokee

1 Answer

Hesitation or stumble during acceleration


take your car for a tune up
if they are carburetor type motors you may need your carbie cleaned and a tune up
if you clean it your self with carbie cleaner it may increase in idle speed this is nothing to worries about it is a simple adjustment
with a carburetor type motor they tend to idle higher when their cold this is the automatic choke kicking in and normally it should happen till the car is a bit warmer and the accelerator has been depresses
although a car should idle at 800 rpm my paddok car dose when it is cold it idles at 1200rpm i like it this way as the car warms up quicker as i will not drive a car while it is cold
hope this helps
ricko

Oct 20, 2008 | 1989 Nissan Pathfinder

1 Answer

99 wrangler 2.5 hesitation


If this is hesitation and unsteady idle, check for vaccum leaks at the intake with starting fluid. Frankster016

Jul 17, 2008 | 1999 Jeep Wrangler

1 Answer

Acceleration hesitation


Depends how long since your last tune up and mileage. I would do a normal oil change, oil filter, air filter and plugs. If she still does it, try checking for a vacuum leak. Start the vehicle and spray "lightly" carb cleaner around your vacuum lines. If you have a leak the engine will increase in idle suddenly. Replace the line or part. AS A LAST resort and pretty rare is the distibutor. They usually run about 75.00 to 110.00...hope this helps.

Jun 15, 2008 | 2005 Jeep Wrangler

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