Cadillac: 1990 Cadillac Eldorado, camshaft sensor, twilight sentinel

Question
Tom:

Problem:
I began experiencing erratic engine operation on the freeway, especially during rainstorms. Also, the car would idle in a rough way while at stop signs.  

Actions:
I changed the distributor and rotor per the Haynes manual instructions. I had the ignition module and coil tested, they tested good. I did nothing to adjust the timing.

Result:
The car started right up but began to rev really high while simultaniously the interior lights flickered rapidly. Overall it runs more rough than before. There is a great deal of hesitation when I press the accelerator in all phases of driving. During idle, the car runs rough and seems to be missfiring. The service enging soon light also came on and remains on at all times now.

I gathered the codes in order, here they are:

E041 Current
E052 History
B120 Current
B552 History
R033 History
R034 History
R061 History
ECM ?

I would greatly appreciate any help or tips on this matter.

Sam


Answer
E041 = Open camshaft sensor circuit.

B120 = Twilight sentinel delay pot circuit problem.

tom

You will need to contact me at:


tomcjoy@msn.com


In order for me to provide you with pictures, diagnostic procedures and  electrical schematics to find and fix your problem since this board does not allow sending pictures.

PLEASE include your original question(s) and the MAKE-MODEL-YEAR and ENGINE SIZE of your vehicle when you contact me.

PLEASE tell me if you do your own repairs and or your skill level of auto repair. This is VERY VERY important if I am to be able to help you repair your own vehicle.


tom'