I checked the codes on the truck today with my superchips programmer and I knew the codes for the Oxygen sensors were there but I also got a 1270 and a 1359.

I figure the 1270 was thrown the other day when I down shifted from 5-2 with a car all over my butt.

The 1359 shows as a spark output circuit fault. Since this is the 2.3 with 8 spark plugs and two different coil packs can just the exhaust side be bad. I have been slacking on power (somewhat) and the mileage has dropped from 25-26 PMG to 22-23 range. I drive this truck over 550 miles a week to and from work. Good thing is all highway from driveway to exit ramp and back gate of plant.

Will a Snap-on scanner where you can watch the engine functions be able to show if it is one bank or the other. (wife's uncle has one)

Thank you for any input.

Anthony

 

The exhuast side is more for emisions from my understanding but I'm not really that familar with the 4 bangers. This is what my 1996 Ford manual has for the code.

JG60 CHECK BASE TIMING
CAUTION: Do not use a remote starter while doing timing check.

Key off.
Install timing light.
Remove SPOUT in line connector.
Run engine at normal operating condition.
Note: If vehicle is a No Start, GO to JG6

Is base timing within ± 3 degrees of specified base timing?
Yes No
GO to JG62 . GO to JG61 .

JG61 SET BASE TIMING
With engine at idle, or timing rpm if specified, adjust base timing to 10 degrees BTDC. Reference Service Manual, Distributor Removal and Installation.
Reconnect SPOUT in line connector.
Run engine at normal operating condition.
Is base timing 10 ± 3 degrees?
Yes No
GO to JG62 . SET base timing correctly.

JG62 CHECK FOR SPARK ADVANCE
Key off.
Reconnect SPOUT in line connector.
Run engine at normal operating condition, varying engine speed.
Is timing greater than 18 degrees and/or does timing advance?
Yes No
Not an ignition problem, REFER to Section 4A , Symptom Flowcharts. GO to JG63 .

JG63 CHECK FOR GOOD SPOUT TO ICM

Connect DI diagnostic harness to EEC breakout box, connect B- lead to negative post of battery, and connect ICM and vehicle harness.
Turn switch on diagnostic cable to SPOUT OPEN.
Use DI overlay on breakout box.
DVOM on 40 volt AC scale.
Run engine and measure voltage between J10 (SPOUT) and J7 (B-).
Is voltage between 3.0 and 8.5 volts AC?
Yes No
REPLACE ICM. REMOVE all test equipment. RECONNECT all components. COMPLETE PCM Reset to clear DTCs (REFER to Section 2A, Powertrain Control Module (PCM) Reset ). RERUN Quick Test . GO to JG64 .

JG64 CHECK FOR SPOUT OPEN IN HARNESS
Key off.
Disconnect PCM.
Disconnect diagnostic harness ICM tee from ICM only; leave ICM tee connected to vehicle harness.
DVOM on 200 ohm scale.
Measure resistance between Pin 50 (SPOUT) of the EEC vehicle harness connector and J10 (SPOUT) at the breakout box.
Is resistance less than 5.0 ohms?
Yes No
REPLACE PCM. REMOVE all test equipment. RECONNECT all components. COMPLETE PCM Reset to clear DTCs (REFER to Section 2A, Powertrain Control Module (PCM) Reset ). RERUN Quick Test . SERVICE SPOUT open in harness between PCM and ICM. REMOVE all test equipment. RECONNECT all components. COMPLETE PCM Reset to clear DTCs (REFER to Section 2A, Powertrain Control Module (PCM) Reset ). RERUN Quick Test .