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Diagnosing hesitation engine problem

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Old Apr 14, 2025 | 04:21 PM
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Lpower1366's Avatar
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Diagnosing hesitation engine problem

Hey all. My 2.8l has a very bad habit of whenever you accelerate, it hesitates and stutters badly. The rpm’s fluctuate a whole lot and the car kind of just shakes back and forth like it’s trying to die and then trying to accelerate. The problem usually lasts about 15 seconds or so or until you let off the throttle. I have seen a few threads here that say the ignition control module may be the issue, any ideas or thoughts? Anything I should test?
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Old Apr 14, 2025 | 05:51 PM
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roadthrills's Avatar
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From: Northern Arkansas
Car: 1982 MSE, 1988 S10 Blazer
Engine: 305 in both!
Transmission: 200c / Th700r4
Axle/Gears: 3:73 / 3.42
Re: Diagnosing hesitation engine problem

The ignition module certainly CAN cause that. Most auto parts stores can test it.
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Old Apr 14, 2025 | 06:08 PM
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Lpower1366's Avatar
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Re: Diagnosing hesitation engine problem

Originally Posted by roadthrills
The ignition module certainly CAN cause that. Most auto parts stores can test it.
what other causes are there? Mostly ignition related issues, or is there something im missing entirely
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Old Apr 14, 2025 | 08:36 PM
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8t2 z-chev's Avatar
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From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: Diagnosing hesitation engine problem

we need to know if your car is carb '82-84 or injection '85-89.... just fill in your car details
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Old Apr 21, 2025 | 09:21 AM
  #5  
roadthrills's Avatar
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From: Northern Arkansas
Car: 1982 MSE, 1988 S10 Blazer
Engine: 305 in both!
Transmission: 200c / Th700r4
Axle/Gears: 3:73 / 3.42
Re: Diagnosing hesitation engine problem

Other common issues would be coolant temp sensor or MAP sensor.
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