2nd Generation Specific 1986-1992 Discussion

engine sputters under load

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Old 08-30-2008, 02:16 AM
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ok, so i just put a S5 13b in my first gen. it sputters under load at any more than 1/4th throttle and bogs in neutral.



i've just put on a new MAF, and the fuel pump is new too. any ideas?
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Old 08-31-2008, 10:44 AM
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Completely factory S5 motor? Injectors, everything? OEM S5 ECU running the car?
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Old 09-01-2008, 01:27 AM
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correct
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Old 09-07-2008, 09:57 AM
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I'm not sure what you mean by bogs in neutral. What are the circumstances? You can't rev the car in neutral?





First thing I would do is test the TPS sweep with a multimeter to make sure it's functioning properly. If you're not sure how, you can unplug the TPS and run it. It will send the computer into a fuel map to deal with a failed TPS. See how it runs. Does it make the situation a little better, or alot worse?
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