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Old 02-12-2019, 01:01 PM
phil errett phil errett is offline
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Default Engine bogs at WOT

My 84 GN is in a shop and the owner is searching for a Snap On red brick so he can pull diagnostics, so I though I would try with you guys again.

I have searched the board and cannot find another reference to engine bogging down at WOT. My engine runs fine as long as I do not go WOT. I can ease up to 80-85 mph nice and smooth, but if I try WOT at any time, the engine bogs and actually seems to slow down. When I ease up on the pedal it goes back to normal.

I have changed the O2 sensor and changed the MAF. Smoke test found one vacuum leak - fixed that - Problem persists.

Has anyone ever had this problem and what did the problem turn out to be?
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Old 02-13-2019, 04:43 PM
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Keller Keller is offline
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Question Re: Engine bogs at WOT

Is the car stock?

Does it have the stock chip?

Does it have the catalytic converter?
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Old 02-13-2019, 05:33 PM
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Ts86ttype Ts86ttype is offline
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Default Re: Engine bogs at WOT

Is the fuel filter OK??? Maybe partially plugged... Have you put a fuel pressure gauge on and test drove to see if the pressure stays up??? Tom G.
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