got the codes; now what

[mpgvh]

hi all, & thanks for the great board. i read how to look up codes, got an 11 (ignition signal) and 21 (crank angle sensor/camshaft position sensor) where are these sensors located? & i'm assuming, i replace the sensor? thanks for the help

[88pathoffroad]

The CAS is inside the distributor. To replace it you usually just have to replace the distributor whole. The other error code is probably being generated by the CAS errors.

[89_trailboss]

your ignition signal sender is shot. replace your coil/signal sender and you truck will start IMO. happened on my 89(one day it just wouldnt start) and on my HB(again, went out and it wouldnt start).

 

the coil/ignition signal sender is on the drivers side fender, under the intake tube. just follow your plug wire and it will lead you right to it. the plug wire is connected the the coil. right beside your coil(on the same metal base) is a small box with 2 wires going in, two going out to the coil.

[mpgvh]

i'll hit the junk yard this weekend. thanks guys!

[89_trailboss]

if you dont find one LMK. Im sure I got a couple around here.

[88pathoffroad]

your ignition signal sender is shot. replace your coil/signal sender and you truck will start IMO. happened on my 89(one day it just wouldnt start) and on my HB(again, went out and it wouldnt start).

 

the coil/ignition signal sender is on the drivers side fender, under the intake tube. just follow your plug wire and it will lead you right to it. the plug wire is connected the the coil. right beside your coil(on the same metal base) is a small box with 2 wires going in, two going out to the coil.

That would be the power transistor, it receives signal from the ECU to trigger the coil; it doesn't send anything back. It's worth a shot if you can find a cheap replacement.

[mpgvh]

your ignition signal sender is shot. replace your coil/signal sender and you truck will start IMO. happened on my 89(one day it just wouldnt start) and on my HB(again, went out and it wouldnt start).

 

the coil/ignition signal sender is on the drivers side fender, under the intake tube. just follow your plug wire and it will lead you right to it. the plug wire is connected the the coil. right beside your coil(on the same metal base) is a small box with 2 wires going in, two going out to the coil.

got one @ the bone yard for $14.99 yesterday, & the truck started right up. thanks trailboss!