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Old 05-22-2022, 06:33 PM   #1
Paulperry
 
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Default Hesitation in no power

Hey guys my name is Paul. So i have a 1986.5 D21 2.4
Its got a bad throttle hesitation and no power, put new fuel pump, fuel filter, checked fuel pressure regulator is good. Any ideas on what it would be?
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Old 05-22-2022, 07:11 PM   #2
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Check your timing. That would be my first thing to do.
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Old 05-22-2022, 07:24 PM   #3
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Pull codes and check timing.
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Old 05-22-2022, 08:17 PM   #4
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Welcome to Infamous
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Old 05-23-2022, 12:17 AM   #5
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Welcome to IN.
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Old 05-23-2022, 12:17 AM   #6
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Quote:
Originally Posted by Deerhurst View Post
Pull codes and check timing.
I have a link in my signature below for doing both.
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Old 05-23-2022, 11:30 AM   #7
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I'll guess clogged cat. But do a major tune up (plugs, wires, air filter, upsteam O2 sensor, {timing,} etc.) anyway, if not already done.


After, is the bogging-down at all engine temperatures and driving speeds? If not, when?
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Old 05-23-2022, 02:36 PM   #8
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Try cleaning the inside of the throttle body, especially the edge of the butterfly. Bad plug wires will cause a lack of power, is this the Z24 engine with 8 plugs?


Has anything been done recently? was it running OK before and than started to have low power? If so what was done?


Need more info.
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Old 05-23-2022, 03:42 PM   #9
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Yes this is the Z24 8 plug.
So it started losing power and throttle stutter started about 6 months ago. I've literally replaced everything on the and in the motor sence. throttle body has been ripped apart cleaned new gaskets. The only thing i have not done is the O2 sensor. Or checked the codes, thats next
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Old 05-23-2022, 03:53 PM   #10
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No cat, its strate piped off the exhaust manifold
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