Question about 1983 Cadillac DeVille

Open Question

Need ECM wiring diagrams for 82 cad with HT4100 engine

I am disabled on limited budget but also was ASE master tech certified. My 82 cad deville melted the ecm . No check engine light and only code 52. I can find no " visible " harness failures and would like to have at least a little better idea of pin outs before installing a 100.00 ecm and repeating failure. any ideas or sugestions would be greatly appreciated.

Posted by on

5 Suggested Answers

ginko
  • 19396 Answers

SOURCE: 82 Cadillac ECM wiring diagrams/ troubleshooting

if a new ECM had blown shortly after replacement, the problem is likely to be in power wiring to ECM.
Check all battery wiring to the BCM/ECM for bad connections and shorts, (shorts, corrosion etc.), and test all voltages to ecm.
Check for short to ground in ckt491 (Orange wire), check for Open or Short to Ground in ckt 526 (Brown wire).

Posted on Jul 07, 2008

  • 37 Answers

SOURCE: HERE ARE THE CODES THAT THE LAST MECHANIC KEPT

The coil will be underneath the distributor cap you have to rmove the rotor to get to it and make sure you number your spark plug wires before you remove them...............

Posted on Jun 27, 2009

jturcotte
  • 6811 Answers

SOURCE: I need to find out where a coolant sensor, map

The coolant sensor is on the front of the engine next to the thermostat housing where the upper radiator hose meets the engine.
The manifold pressure sensor (MAP) is on the firewall and looks like the picture below.
The ECM is in the right pillar to the right of the passenger's feet.
Please let me know if you have more questions.
See pictures below.

coolant and pressure sensors:

jturcotte_163.gif

coolant sensor

jturcotte_16.jpg pressure/vacuum sensor:
jturcotte_17.jpg ECM location:

jturcotte_164.gif

Posted on Nov 14, 2010

  • 104 Answers

SOURCE: hi my ecm coused fuel

sounds to me they should eat all that unless your cats were already melted down from the raw gas

Posted on Dec 17, 2010

hfmiles
  • 1165 Answers

SOURCE: I have a 95 cadillac eldorado codes are, 52 ECU

It means your on board computer, or ECM, is faulty and will need to be replaced.

Posted on Mar 14, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Tachometer not working fuses good ware dose tachometer get its siginal


From the ECM - engine computer ! Suggest you take this to a ASE certified repair shop or the Chevy dealer an have it diagnosed ! Could be the gauge itself .Looking at fuse's is no good ,there is not a fuse just for the Tachometer .
The engine control module (ECM) creates the engine speed signal. The engine speed is sent to the IPC over a discreet wire from the ECM. The instrument panel cluster (IPC) converts the signal to a tachometer position indicating the engine speed.

Dec 31, 2015 | 2008 Chevrolet Chevrolet Aveo 5 Special...

1 Answer

How can I repair a defective tail light?


Go to youtube an check out some basic automotive electrical trouble shooting videos an voltage drop testing , then go to www.bbbind.com/ for free wiring diagrams , an buy yourself a DVOM - digital volt ohm meter an test the circuit . Oh , while on youtube check out videos on how to read a wiring diagram . Also videos on how to test power & grounds ! If you have no clue as to what I'm talking about , you need to take your vehicle to a ASE certified repair shop or the Cadillac dealer !

Dec 20, 2015 | 2002 Cadillac Deville

1 Answer

A dash light came on that looks like an engine with a downward arrow going through it. When it came on the car would not go over 35-40 mph.


REDUCED ENGINE POWER: Refer to Engine Control Module Description for the 5.3L engine or Engine Control Module Description for the 6.0L engine
The powertrain has electronic controls to reduce exhaust emissions while maintaining excellent driveability and fuel economy. The engine control module (ECM) is the control center of this system. The ECM monitors numerous engine and vehicle functions. The ECM constantly monitors the information from various sensors and other inputs, and controls the systems that affect vehicle performance and emissions. The ECM also performs the diagnostic tests on various parts of the system. The ECM can recognize operational problems and alert the driver via the malfunction indicator lamp (MIL). When the ECM detects a malfunction, the ECM stores a diagnostic trouble code (DTC). The problem area is identified by the particular DTC that is set. The control module supplies a buffered voltage to various sensors and switches. Review the components and wiring diagrams in order to determine which systems are controlled by the ECM.
Your best bet is take it to a ASE certified repair shop or a Chevy dealer who has the tool to diagnose this problem before it strands you some where .

Dec 04, 2015 | 2006 Chevrolet TrailBlazer SS

1 Answer

I have a 2003 Cadillac CTS. It continues to go into reduced power mode. How do I correct that.


Are you getting a ENGINE POWER REDUCED message ? Is the check engine light on ?
Reduced Engine Power Mode
Throttle Actuator Control (TAC) System
electronic throttle control .
When the ECM detects a condition with the TAC system the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
?€¢
Limited torque


?€¢
Limited range of throttle movement


?€¢
Engine OFF


Your going to need to take this to a ASE certified repair shop or the dealer , you probably don't have the diagnostic tools to trouble shoot this problem.
https://youtu.be/oPPLAHSSluw

Aug 16, 2015 | Cadillac Cars & Trucks

1 Answer

No power steering when I turn left


NEEDS RACK AND PINION. I AND A ASE CERTIFIED TECH FOR 30YEARS

Jul 21, 2012 | 2001 Cadillac DeVille

1 Answer

1996 chrysler sebring convertible horn, lighter, and cruise stopped working


Wow!
Sorry to hear this one.You'll wan't someone ASE certified in Automotive Electronics for sure. Sounds to me like the ECM or engine control module may have burnt out. If it smelled like electrical smoke, don't drive it! I'd suggest an AAMCO, as they do have techs now hat can do these things, wish I could say "Easy Fix" but I can't see the car.. :)

Jul 12, 2012 | 1996 Chrysler Sebring

1 Answer

Can a 3800 series 2 v6 replace a ht4100 v8 in a 1986 coupe deville?


Sub frame , wires, computer, BCM are all different. A 4.5 or 4.9 engine will fit if you use your intake and gaskets for a 4100.

Mar 29, 2011 | 1986 Cadillac DeVille

2 Answers

Cadillac wont start 1996


check your fuse box then your coil pack

Sep 04, 2009 | 1994 Cadillac DeVille

2 Answers

82 Cadillac ECM wiring diagrams/ troubleshooting


If you need diagrams and don't mind paying for the alldatadiy.com is the place to go, They will have complete service manuals for your car.

Jul 07, 2008 | 1983 Cadillac DeVille

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

265 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...