P0507 Diagnostic Trouble Code Discussion for October 2022
Idle Speed Higher Than Expected
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| Help Request | Posted | |
| 1999 Pontiac Firebird Formula 5.7L High Idle 3000+ VIN: 2G2FV22G4X P0507: Idle Speed High. ... Vehicle on start shoots up immediately to 3000--3500 rpm and just holds there at idle. Customer few months prior had it at another shop and they replaced ecu and iac motor which fixed the problem for about 20 miles until customer got home then it kept ... |
October 27, 2022 |
