2CarPros - Car Questions & Answers

1999 Subaru Forester Repair Question


Topics covered: Sensor, Rpm, Battery.
Mileage: 184,233 miles.

Asked on December 11, 2011

Subaru has no accelaration power and no check engine light after disconnecting/reconnecting battery

Vehicle - 1999 Subaru Forester AWD had the following check engine error codes: P0170,P0463, P0130, P0136, P0301, P0302, & P0303. I disconnect the battery, reconnect battery which clear the codes. Now the car seems to have no acceleration power. If I press the gas pedal the rpm jumps up to about 3000 rpm and drops to below 1000 rpm and the vehicle has no acceleration power. I changes the downstream oxygen sensor, the PVC valve and the 2 air filters, sprayed the MAF sensor with MAF cleaner to clean it but this had no effect on the car performance. Any ideas what I should do next.
Avatar Asked by baemr

Answer

Replied on December 11, 2011

P0170-Fuel trim malfunction
P0130-Front O2 sensor circuit malfunction
P0136-Rear O2 sensor circuit malfunction
P0301-Cylinder #1 misfire detected.
P0302-Cylinder #2 misfire detected.
P0303-Cylinder #3 misfire detected.

Check compression and spark on cylinders. Check for vacuum leaks. Check for loose wires or connections in the O2 sensors, ECU, and the coil(s).

Tiny Answered by rivermikerat (expert)
5,494 answers provided