codes 14 24 42 only come on above 90 kph

[thinmyster]

Any idea why this would be?

I can drive around for an hour going below this speed and nothing happens. After i sustain speeds of +50mph for a minute or two these codes will trip. Any ideas?



code 14 Ingition
code 24 IAT intake air temp
code 42 Speed sensor

[Tarrantula]

Maybe its the speed sensor like its telling you?

[thinmyster]

Everything works fine though. Only after my wire tuck did these issues come up. Im thinking it may be a grounding isssue..

[mr2mike]

Electrical issue for sure. Maybe ecu is losing signal from these sensors.

You'll need the wire diagrams and trace those individual wires.

What are the symptoms? Ignition would need to be cutting out I think for it to throw codes. I'll try to come see how well you grounded things.

Never heard of a speed sensor breaking.
IAT could be sensor (test it)

[mr2mike]

Problem solved:
http://imgur.com/HXg4f.jpg

All your complaints, even your combination meter fan issue in other threads... all attached to ONE GROUND POINT.
EA
$100 and I tell you where EA1 is located.

And it could be that because you have no speed sensor, it's running in a closed loop safe mode because it can't calculate a proper a/f ratio because the lack of sensor readings.

[Big_Fat]

i was gonna say bad ground will give u unclear readings some times causing it to trip codes

[thinmyster]

Ive checked some of the grounds with no resolve

Under the intake mani (EA)
The large one near the intake tranny to chassis