P1078, Hitachi sensor, still idling at 1200 RPMS. Any ideas?
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P1078, Hitachi sensor, still idling at 1200 RPMS. Any ideas?
Here's the story: My G is a 2005 with the rev-up engine and 175,000 on the clock. Suddenly I got a high idle and code P1078, Bank 1 exhaust timing sensor. After replacing the sensor with a Hitachi sensor, the idle is still high and the code comes back immediately. One mobile tech stated that it "needed to be on a Labscope" while another stated "A friend of mine had a G35 like yours and it needed a timing belt." Now, I thought that was hogwash as the rpms were not jumping around, the power is good, there is no rattling in the engine; all of which to me would suggest a bad timing chain. Bank 1 (green connector) camshaft sensor changed in 2023 when slip light came on and crankshaft sensor replaced in 2022. My plan is to replace both sensors on Bank 2 even though 1084 is not a code that was ever shown. Just wondering if anyone solved their high idle problem by replacing all of the sensors, even those not indicated by a code? My plan is to go Bank 2 both sensors new and a new crankshaft sensor unless that is simply a waste of time.
The second mechanic said "those codes will keep coming back if the timing chains are going bad", even though it has been the single P1078 code. I think maybe someone on this forum understands our vehicles better than him.
The second mechanic said "those codes will keep coming back if the timing chains are going bad", even though it has been the single P1078 code. I think maybe someone on this forum understands our vehicles better than him.
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Kennycaine
G35 Coupe V35 2003 - 07
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08-17-2024 02:04 AM