Will and open header cause my 3.8 mustang not idle car runs no idle

Asked by Sep 09, 2015 at 07:39 PM about the 1996 Ford Mustang STD Coupe

Question type: Maintenance & Repair

4 Answers

69,725

No. You put a header on it, so you are looking for free flowing exhaust, so I assume you must have added hp. to the engine. You still need to fine tune.

46,405

Open header will not cause it to not idle.

46,405

To add to my previous comment. Unless upstream O2 sensors are not installed. If you have an open header and O2 sensor is installed I would think it should idle, but if the O2 sensor is missing from the equation it is possible it might not idle correctly.

69,725

Good Point....

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