tdicola
NAXJA Forum User
- Location
- Seattle, WA
Hey all, I noticed my '99 XJ (auto, 4 liter, 150k miles) surges a bit when I'm off the throttle and coasting. I only noticed it recently when my muffler was off (could hear the exhaust surges) and can see it jumps from ~500-800 RPM. I don't see this behavior at idle, under acceleration, or when braking--only when the car is moving without my foot on the gas. I'm not aware of any check engine light or codes being thrown either (haven't hooked it up to a code reader, but there's no check engine light). Anyone ever experience similar issues? Could this be a sign of the TPS going out, and if so is there an easy way to test it? Thanks!
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