4.0 engine stalling when stopped at lights

Asked by Feb 10, 2011 at 11:53 AM about the 2003 Ford Ranger 4 Dr XLT 4WD Extended Cab SB

Question type: Maintenance & Repair

engine will start missing and stalls out when sitting at a red light for a while. It only does it when the motor has warmd up and doesn't do it all the time.  Once I start moving the engine runs great. Have changed both front O2 sensors, new fuel, new air filter, changed plugs,added injector cleaner to fuel system.

2 Answers

bad TPS or IAC,both on TB the iac you can clean with carb cleaner,also clean TB inside with carb cleaner

2 of 2 people found this helpful.
20

I replaced both of those and its still happening. also replaced egr sensor and valve. starting to lose patience. have heard it could be torque converter b/c it seems to only happen after its gone past third

2 of 2 people found this helpful.

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