Question about 1984 Cadillac DeVille

1 Answer

1984 Cadillac Deville

I am still having problem with too much fuel. I have changed the ECM, MAP sensor and fuel pump relay.

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 135 Answers

Try the fuel pressuer regulator

Posted on May 19, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

HOW TO CHANGE THE FUEL PUMP ON 2010 SRX 4 DR. V6


did you test or are you guessing ? The fuel pump relay allows the ECM to energize the fuel pump. The ECM enables the fuel pump whenever the crankshaft position (CKP) sensor pulses are detected. GM Fuel Pump Relay Testing

Dec 01, 2016 | 2010 Cadillac SRX AWD

1 Answer

1997 Cadillac Deville Vin Y hard starting


I would check the fuel pressure. You may have a problem with the fuel pump relay or the one way valve in the pump.

Jul 31, 2012 | 1997 Cadillac DeVille

1 Answer

I have a 1991 Cadillac Deville with a V8. It won't pass smog. Has high co. I replaced the egr valve, charcoal canister, spark plugs, spark plug wires, cap and rotor, catalytic converter, oxygen sen


Hello! when you say you checked the MAP sensor what do you mean? Did you take voltage readings at idle ? A vacuum leak is the likely culprit, especially to the MAP...The minor shake at idle being the major clue...Send a comment...guru..saailer

Dec 24, 2011 | 1991 Cadillac DeVille

1 Answer

WE ARE HAVING PROBLEM FINDING DIAGNOSTIC PROCEDURE FOR CADILLAC DIVILLE WITH DTCs P0029,P0047,P0137 and P0107


P0029 - Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
Causes:
- Dirty engine oil
- Low engine oil level
- Exhaust valve control solenoid circuit open or shorted
- Exhaust valve control solenoid circuit poor electrical connection
- Faulty exhaust valve control solenoid

Solutions:
- Change oil
- Replace exhaust valve control solenoid

P0047 - Turbocharger/Supercharger Boost Control A Circuit Low
This vehicle is not equipped with a turbocharger or supercharger if it is a 1994.

P0137 - o2 Sensor Circuit Low Voltage Bank 1 Sensor 2
Causes:
- Sensor circuit harness or connectors is open or shorted
- Rear heated oxygen sensor Bank 1 may be faulty
- Fuel pressure may be faulty
- Fuel injector may be faulty
- Intake air leaks

Solution:
Replacing the O2 Sensor 2 usually takes care of the problem.

P0107 - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
Causes:
- Damage harness or connectors
- MAP sensor circuit is open or shorted
- MAP sensor
- Damaged PCM or ECM

Solutions:
- If damage, repair MAP sensor harness or connector
- Replace MAP sensor
- Replace PCM or ECM

Jan 25, 2011 | 1994 Cadillac DeVille

1 Answer

1990 DEVILLE. Posted 6-14. New BCM, new fuel pump, new relay, still no fuel. Have tested wires, I get a brief 12 volts to grey wire on connector to fuel pump when key is turned on, then nothing. I can hear...


That is correct for initial prime,then fuel pump works off of crank sensor.Fuel pump is ussually controlled through ECM not Bcm.Have you checked for fuel preasure when you first turn on key,

Jun 15, 2009 | 1991 Cadillac DeVille

2 Answers

1990 deville, replaced ecm, fuel pump, filters,


wow...BIG problem...I'd say you have a bad ECM - maybe you hooked it up "hot"? otherwise, check all grounds for secure connections.
Good Luck

Jun 14, 2009 | 1991 Cadillac DeVille

1 Answer

INJECTORS ARE FLOODING MOTOR AND PLUGS


Is the fuel pump relay switching off the fuel pump? When you turn the key to the on position, do you hear a click and the pump shut off? If not, the relay is bad and needs replaced. If pump keeps running it will flood engine.

Apr 20, 2009 | 1984 Cadillac DeVille

1 Answer

1996 CADILLAC DEVILLE, NO POWER TO FUEL PUMP


Check for a burned fusible link under the hood. If you have power at the fuel pump relay, you could have a bad ignition switch or bad oil pressure switch...accordianman

Dec 15, 2008 | 1996 Cadillac DeVille

1 Answer

Can you use a obd2 meter on 1989 cadi deville


The fuel pump relay is located behind of the glove box. The fuel pump fuse is located in the same box (Relay Center). The fuel pump relay is either the 2nd or 3rd one down in the 2nd row. You may want to check your computer codes and make sure it is not your ECM or BCM as they can shut down ones fuel pump too.

Jun 21, 2008 | 1989 Cadillac Sedan DeVille

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

Related Topics:

162 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8531 Answers

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

Answer questions

Manuals & User Guides

Loading...