View Full Version : Help, 95 Deville No Spark 4.9l


scor
05-02-07, 04:31 AM
I have changed the pickup coil, and ignition module. I have no clue what else can be wrong, it was intermitent before, but now there is no spark at all, it cranks over. 95 deville 4.9l

I am thinking the crank sensor or knock sensor, but i have no clue where they are located..

Does anybody have any insight or has run into this problem before.

When i crank, the security light is off if i leave the key in for 5 secs and then crank..

is there a way to read the code?

Pckstude
05-02-07, 04:39 AM
Have you tried doing a search in the 4.x engines forum? There could be some info to start with that may give you some ideas.

chubbyranger
05-02-07, 05:11 AM
is there a way to read the code?

Press and hold 'OFF' and 'WARMER' on the climate control. Codes will show on the DIC. Could also be a bad ignition coil, if I remember 4.9 setup correctly it is still a coil and distributor car. Symptoms you describe are consistent with a coil on its way out. Some auto parts stores can test them.

Ranger
05-02-07, 10:38 AM
I am thinking the crank sensor or knock sensor, but i have no clue where they are located..
The 4.9 has no knock sensor.

scor
05-02-07, 11:52 AM
There is no Warmer on the climate control on this car..

scor
05-02-07, 12:59 PM
I got some Codes. Can anybody help.

P012 Current
P052 History
I027 History
I039 Current

Ranger
05-02-07, 03:46 PM
P012 (E012) .................................................. No Distributor Signal
P052 (E052) .................................................. ..... PCM Memory Reset
I027 .................................................. ...... PRND321 switch failure
I039 .......................................... Loss of Road Sensing Suspension Data

scor
05-02-07, 04:29 PM
When i go into the Error code reading.. And try to start the car in the diagnostic mode.. It actually feels like it wants to start..

Ranger
05-02-07, 04:49 PM
It actually feels like it wants to start..
Are you SURE that this is an ignition problem and not a fuel pressure problem?

scor
05-02-07, 06:47 PM
definately not fuel.. There is no spark..

Ranger
05-02-07, 07:09 PM
I would not think starting the car in the diagnostic mode would make any difference. Obviously P012 is the problem, but I can't help much more than that. Maybe R & R the distributor.