Hi,
I have a problem with my '95 Mustang. Few minutes after it starts, when below 2000 RPM in 1,2 or 3 gear, engine loses power. If I fully press the throttle, I can hear something like an explosion in exhaust and the car pulls back and forth. After a second or two it gets the power back. Also, from time to time the check engine light comes on. It's about 0 degrees celsius here.
I recently replaced fuel pump, spark plugs and wires but it didn't help. What next?
Um, how about read the engine check code?
Dana
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That doesn't sound like detonation to me. More like backfiring.
John
The code was 172 HEGO lean, right side. Suspecting the sensor, I disconnected the HEGO fuse this morning. Light came up after a minute, but there were no power problems. After a while the light went off. Does it mean that sensors got warm anyway and started working? Should I order new sensors?
I had this exact prob. with my 95 GT. I replaced the temp sensor, car ran/idled so much better. No more check engine lights. The temp sensor was grounding itself.
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