Question about Cadillac DeVille
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Posted on Jan 02, 2017
hole in radiator. water pump leaking. leaking coolant into cylinder head from bad gasket. bad radiator cap can cause it to loose coolant . also check the hose to overflow resivore.coolant could be boiling away due to overheating. check the thermastat and the fans. all fuses and relays.as far as the codes check the wiring. if u have to unplug all the connectors and remove the loom and visualy inspect the wiring harness. i had to do this on my 93 deville. i found the reason my ac wasnt working my cruse control . and throttle position sensor. my temp sending unit was seting the idiot light . and the alternator was seting the charge light. all becase of a bad spot in the wiring. i seperated the wiring and tapped each individual wire up. re loomed it and taped over the loom . now my car runs and drives as if i drove it off the show room floor.amazing what a few hours of checking and repairing a few wires willl do. the cadillac dealer ship estimated around $2,000 to fix my problems depending on hours involved at $100 an hr. it cost me 2 rolls of electrical tape and $10 in loom. and like i said a few hours.
Posted on Mar 25, 2010
These are for 4.9L
P016-generator voltage out of range--Voltage is below 10 volts or above 16 volts with engine at 500rpm.
P030-Idle speed control (ISC) out of range--Check ISC for operation
A047-very low A/C refrigerant condition warning--check refrigerant level
I039-speed sensing suspension (SSS) fault--this one requires a lot of testing. Could be anything from bad connection at a strut, to bad ground, to bad strut.
I041-battery voltage too low--at 800 rpm, voltage is less than 10.6 volts
I052-keep alive memory error--means IPC lost voltage, and reset. Normal if battery was disconnected, or lost voltage.
These codes are for 4.6L
I039-loss of road sensing suspension (RSS) data--might need to replace rss module
P016-generator voltage out of range--same as above.
If you need anything else, let me know.
Posted on Dec 22, 2008
SOURCE: I have code issues.Need to
ECM Diagnostic Codes (Engine Control Module)
E012 - No distributor signal
E030 - ISC Circuit Problem
E039 - VCC Engagement Problem VCC
BCM Diagnostic Codes (Body Control Module)
B112 - A/C Low Side Temperature Circuit Problem / A/C Clutch
B120 - Twilight Delay Pot Circuit
B448 - Low Refrigerant Pressure
B552 - BCM Memory Reset Indicator
Additional details could find in caddyinfo.com/readingcodes.
Hope this helps.
Posted on Nov 22, 2010
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