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Discussion Starter · #1 ·
Warm start issues. Over the past week my (Grand Cherokee 5.2 litre) started having issues when starting warm. Initial start-up in the morning usually fine sometimes has a surge, after warm becomes extremely difficult to start. Once running tends to smooth out and run fine. Checked the IAC and it was carbon coated so replaced it, also checked and replaced the PCV and line. This seems to have improved the initial start but still have issues when it is warm. Any suggestions? Intake air sensor?
 
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