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WOT power loss

GordoSmasho

Nevada Raisins
NAXJA Member
I have been experiencing a noticeable dip in power under wot getting on the free way. Starts out really strong up to about 2500 then feels like 75% throttle up to 4000 then pours on the coals up to 5k. It does this in all gears. Other wise its super smooth. I've done a full tune up recently. Just wondering where to start looking.
 
Anytime you post a Tech question provide your Jeep specs. Correct answers can vary greatly based on year, engine, trans, t-case, axles, stock or modified, etc.
 
I would test the TPS, and inspect the TPS wire connector for corrosion and the TPS wires for damage.

Also consider testing or simply replacing the Coolant Temperature Sensor (CTS).
 
attach a fuel pressure gauge and take it for a spin-- check pressure during "stumble" for anything unusual (less than 45-49 would be considered unusual)
 
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