Rich backfire with Loss of Power

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Deathacus

SHO Member
Joined
Jul 19, 2021
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Location
Pennsylvania
Right, almost made it to Colorado. '94 MTX, she's got a rough idle, loss of power, and a pretty consistent backfire. Gets worse under load, set cruise control at 75 and she's just fine after a moment. Oh, and she's quite hot.

There is no CEL, and pulling codes look fine. There was a memory code for low voltage on the coolant temp sensor and the MAF, I cleared those and they havnt come back. May have been a weak battery triggering those. Resistance on the ECT was like, 25 ohm or kohm or whatever on a cold engine on a 75-80 degree day
 
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