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2000 model Hyundai Lantra GLS 2.0 (G4GF) factory 5 speed manual. Fully optioned. Most things work...
149 Posts
The codes and the engine behavior are pointing towards a bad throttle position sensor. IMO if the TPS is faulty, it will try to run open throttle with the throttle butterfly closed and this will result in a very lean run. The IAC will then open in an attempt to supply extra air to the intake (this would explain the red hot exhaust) Anyone else reading your post might be able to add their input. Intermittent faults are hard to diagnose. Be warned that running the engine lean enough to get the exhaust manifold glowing may result in the manifold cracking.
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