300ZX (Z31) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

Bog when hit throttle or going up hill

Old 07-28-2018, 05:50 PM
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Bog when hit throttle or going up hill

Alright guys having some issues with my 86 300zx NA. I've changed timing belt, thermostat, water pump, temperature sensor and rotor. Cap, plugs and wires are fairly new. I've changed tps sensor and when I start car it idles at about 700 rpm. When try to give it gas to say haul as it'll just bog and slowly gain speed. Also when going up hill it'll start slowing down. No ecu codes on dash so any help will be great
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Old 07-29-2018, 10:03 AM
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Ok so update ecu codes came up as 11, 23 and 31
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Old 07-29-2018, 10:25 PM
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Have you checked the timing? Fuel pressure? Read the spark plugs?
Did you drive the car then check the codes?
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Old 07-30-2018, 03:27 AM
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Last night I power washed underneath hood and degreased everything and then car wouldn't let me rev past 2500. Pulled over let everything dry off pulled connector off maf, reconnected it and car ran perfectly. Like a whole new car!
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Old 07-30-2018, 03:32 AM
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How does that even happen
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