My 1992 cadillac deville wont start unless i push the gas pedal while im starting it and the idle is very high and never kicks down at all while driving even after the engine is hot , i also got 2 error codes e30 and e48 idle speed control and egr system problem ,can you tell me exactly what the problem is.

SOURCE: 95 sedan deville wont start and says fuel low with gas in tank

I'd start by tracing the fuel supply and return lines from the gas tank to the engine compartment. Make sure that they are free of kinks or other damage.

Next, check the fuse box and make sure there is power to the fuel pump. Trace the electrical connections leaving the fuel tank and make sure they weren't torn or otherwise damaged by the tire tread.

Hope this helps and good luck!

SOURCE: car is making loud high tone while driving 1992 cadillac deville

your water pump may need to be changed. have a trusted mechanic check it. the water pump is connected to the drivebelt of your 4.9 l engine, and if thats where the sound is coming from you can be pretty certain

SOURCE: im getting error codes p1350 n p1370 on a cadillac

Remove your entire coil pack and ICM, disassemble it, and clean every contact and connector 

Something's fishy with the ICM trigger signals, and you may just luck out with a good electrical cleanup.

or maybe even replace it

SOURCE: I have a 1995 Cadillac

I have a similar issue with a 94 DeVille. Runs for a while then shuts down. Fuel pressure is good (I drove around with a pressure gauge attached and it still shut down with no drop in pressure). I've replaced the idle control and ignition module - no improvements.
I too have code P012 showing which to (potentially) the crank position sensor - which I can't seem to locate.
Any luck on your issue?

Jeffrey Turcotte

• 8991 Answers
• Posted on Oct 24, 2010

SOURCE: Please help: 1992 Cadillac Deville:

E13: right bank O2 sensor, no data
F48: low refrigerant level in A/C system

Neither of these is likely to cause rough idle, but I would change the sensor.
If that cure it, great.

If not, make sure the vacuum hose on the fuel pressure regulator (at end of fuel rail) is tight at both ends and not cracked or leaking. Then pull the vacuum hose off the regulator and see if there is any fuel in the vacuum hose. If yes, replace regulator.
I also recommend cleaning up the intake side of engine with carb cleaner or equivalent: throttle body, Mass airflow sensor, EGR system, and PCV valve. Make sure EGR valve is operating.

If you have questions, please let me know.


fuel press reg: