Hopefully this is a easy one... I just installed a K&N cone filter on a 90 GTU. The car is completly stock. Stock exhaust and manifold. The car still has the airpump. I also put a small filter on the tube from the airpump.

The check Engine light is now flickering on and off. It's happening at no specific time but usually on hard accelleration. It's off 97% of the time.

Is this something I should be worried about...? The car feels absolutly fine. Any ideas...? Thanks.

 

how many times is it flickering?

Its telling you something wrong.

 

89-91 Codes:

1 Ignition coil (trailing side)
2 Crank position NE sensor
3 Crank position G sensor
5 Knock sensor
8 Airflow meter (AFM)
9 Water thermo sensor
10 Intake air thermo sensor (AFM)
11 Intake air thermo sensor (engine)
12 Throttle sensor - full range
13 Pressure sensor - intake manifold
14 Atmospheric pressure sensor (built in ECU)
15 oxygen sensor
17 Feedback system for O2 sensor
18 Throttle sensor - narrow range
20 Metering oil pump position sensor
23 Fuel thermo sensor
25 Solenoid valve - pressure regulator control
26 metering oil pump stepper motor
27 Metering oil pump
28 Solenoid valve -EGR
29 Solenoid valve - EGR vent
30 Solenoid valve - split air bypass
31 solenoid valve - relief 1
32 Solenoid valve - switching
33 Solenoid valve - port air bypass
34 Solenoid valve -idle speed control (BAC)
37 Metering oil pump
38 Solenoid valve - accelerated warm-up system and air supply valve
39 Solenoid valve - relief 2
40 Solenoid valve - purge control (auxiliary port valve)
41 Solenoid valve - variable dynamic effect intake (VDI)
42 Solenoid valve - turbo pre-control
43 Solenoid valve - waste gate control
44 Solenoid valve - turbo control
45 Solenoid valve - charge control
46 Solenoid valve - charge relief control
50 Solenoid valve - double throttle control
51 Fuel pump relay
54 Air pump relay
65 Air conditioning signal
71 Injector - front secondary
73 Injector - rear secondary
76 Slip lockup signal
77 Torque reduced signal

 

These #'s you're listing above, is that supposed to be the amount of times the check engine light blinks/flicks on and off...? It didn't seem like it was blinking any particular number of times, just coming on...... then off. Sometimes longer then the last, with a couple of minutes between blinks..? I'll take it for a ride today and pay CLOSER attention to it.

 

 

Here's how you actually get the error code:

http://www.1300cc.com/howto/how2/codes.html

When it comes on when you are driving I don't think it's going to tell you anything other than there is a error code stored in memory.

 

Thanks... That couldn't of been described any easier.

 

I agree. I used it myself without any problems further proving that write up to be idiot proof.