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Engine is chugging

Old 1/10/19, 06:24 PM
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Engine is chugging

Hi guys. Looking for a little help from the collective wisdom of the forum. I've got a 99 GT w/ manual trans that's basically stock. I've got a general engine question which is why I posted here instead of the specific SN95 V8 section. My engine has developed a problem of having zero low end power. It starts to chug hard if I'm cruising down the road at 60-65 in fifth and need to climb a hill. I'll have to shift down to 4th. It will barely accelerate at all until I'm at 2200 rpm's. I'm not throwing a code and the CEL isn't on. It doesn't feel like an ignition problem on one cylinder because it's chugging so hard. I'm leaning more toward a sensor on the throttle,, cam, crank etc. but I don't know. I've cleaned the MAF sensor, throttle body, installed a new air filter, and new spark plugs. Let me know what ideas you guys have. Thanks for the help.
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Old 1/10/19, 08:41 PM
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Clogged fuel filter?
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Old 1/11/19, 06:48 AM
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Perhaps, I've got about 13,000 miles on that filter, so you'd think it would still be good, but it's a cheap thing to try.
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Old 1/11/19, 06:55 AM
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Yeah, I would not expect it to clog in just 13,000 miles.
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Old 1/12/19, 12:57 PM
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I would do a compression check. I don't know the specs for your engine, but I would expect at least 120 psi and all cylinders should be within 10% of each other. If compression is good I would look at the catalytic converters. One or both may be clogged. Bad plug wires usually cause the same type of hard ignition miss as a bad plug.
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