fault codes for 99 coupe 2.8 liter

**steveo539** · 10-19-2018, 01:10 PM

Finally got around to investigating my check engine light. Had to jump start the car as it's been sitting so long. Got error codes

P0125 Insufficient coolant temperature for closed loop fuel control
P0188 Manufacturer controlled Fuel air metering
P0189 Manufacturer controlled Fuel air metering

Anyone know what may be the problem off the top of their head?

**steveo539** · 10-25-2018, 01:01 AM

Anyone?

**JustinHalverson** · 10-25-2018, 07:52 AM

I'm assuming you are not having any significant performance issues? There are many on this forum much smarter than I, but I'd check to make sure the coolant is full and bled of all air. There are numerous threads on this forum concerning how to do that. The coolant temperature sensor may not be seeing an accurate engine temp which could produce all three of these codes (I think). After that, I'd try resetting the codes and see if they return. Sometimes these things occur with the accumulation of crud on sensors that go away when the car is driven and warmed up. Keep an eye on the engine temp! You don't want to overheat these engines.