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1994 Cadillac deville sputters when hot

I replaced wires spark plugs distributor egr valve and I can't figure it out. s it my oxygen sensors

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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chiquititas
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SOURCE: 1994 Cadillac DeVille Concourse - Runs rough?

The "check engine" light will "light" when there is a malfunction in the engine management system. The fault code is then stored in the computer. The computer must be scanned to retrieve these stored faults to pinpoint the malfunctioning component. We recommend buying your own scanner and doing it yourself. With a pocket scanner you can check for fault codes to find out why the light came on in the first place. You can clear your cars trouble codes after you replace the malfunctioning sensors.

Posted on Jun 26, 2008

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SOURCE: 1984 Cadillac Sedan Deville Brougham distributor wire connections

1984 Cadillac Full Size Cadillac RWD
4.1 liter V-841894029.gif

Posted on Jul 13, 2009

  • 3 Answers

SOURCE: 1991 cadillac deville fwd 4.9 engine shudders hard

I have a 1991 Cadillac Fleetwood 4.9 120000 miles, I have the same problem. replaced plugs,wires,cleaned throttle body, and O2 sensor and have same problem. Taking it to a GM shop on 02/24/10.

Posted on Feb 23, 2010

  • 1757 Answers

SOURCE: what is the wiring diagram for the distributor in

For the 1994 Cadillac Deville 4.9L V8 (Not the Deville Concours)

Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
.........(back)..........
|...2....4....6....8...|
|.........................|
|...1....3....5....7...|
.........(front)
Distributor Wiring Connections:
......(back)
.........4
...3...........8
6................1
...5...........2
.........7
(front)
Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!

Posted on May 19, 2010

saailer
  • 1868 Answers

SOURCE: 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

Posted on Dec 24, 2011

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I have an 88 Cadillac Deville. 2 months ago I had a new fuel pump put in. It's making a whining noise and the car keeps dying and sputtering. What else could be the problem to make the pump go out?


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Dec 28, 2015 | Cadillac Cars & Trucks

1 Answer

1994 Cadillac DeVille. Why is it sputtering, backfiring and shutting off while driving?


Could be one of several things:
  1. Bad ignition coil or coil wire;
  2. Bad plug wire(s);
  3. Timing belt slipped or broke;
  4. Static timing off (unlikely, unless distributor came loose);
  5. ECU defective;
  6. Contaminated fuel (requires complete fuel replacement);
  7. Bad crankshaft position sensor;
Best place to start your diagnostic is by reading out stored codes using an ODB-II reader, and check the systems indicated by the codes.

May 11, 2015 | Cadillac Cars & Trucks

1 Answer

What are codes p1401 p0302 p0305 p1409 p0301


P1401 Differential Press Feedback EGR Circuit High Input
Your EGR port is plugged. Replace your EGR valve, and clean the ports
A code P0302 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer
  • A code P0305 may mean that one or more of the following has happened:
    • Faulty spark plug or wire
    • Faulty coil (pack)
    • Faulty oxygen sensor(s)
    • Faulty fuel injector
    • Burned exhaust valve
    • Faulty catalytic converter(s)
    • Running out of fuel
    • Poor compression
    • Defective computer
    • A code P0301 may mean that one or more of the following has happened:
      • Faulty spark plug or wire
      • Faulty coil (pack)
      • Faulty oxygen sensor(s)
      • Faulty fuel injector
      • Burned exhaust valve
      • Faulty catalytic converter(s)
      • Running out of fuel
      • Poor compression
      • Defective computer
      • A code P0302 may mean that one or more of the following has happened:
        • Faulty spark plug or wire
        • Faulty coil (pack)
        • Faulty oxygen sensor(s)
        • Faulty fuel injector
        • Burned exhaust valve
        • Faulty catalytic converter(s)
        • Running out of fuel
        • Poor compression
        • Defective computer
        • p1409
        • EGR Vacuum System Leak - Read Our Article on EGR Valve Codes For Help With This Oldsmobile Check Engine Light Code

Sep 25, 2014 | Cars & Trucks

1 Answer

Why cadillac deville won't start when hot?


Sounds like the module inside the distributor is starting to fail. If the engine turns over at normal speed but won't start then grab a spark checker and put it at the end of a spark plug wire and crank the engine. If if sparks then you have a fuel problem. If no spark then look to the distributor module or possibly the wiring harness inside the distributor. I have seen where the power wire, pink I believe, goes open at the black plastic box connector inside the distributor and can be tested with an ohmmeter. If that is the problem then replace the 2 wiring harnesses that make up the distributor wiring harness because the plastic connector will break apart when trying to remove the terminal and that makes it difficult to put back together. Hope that helps

Sep 08, 2014 | 1994 Cadillac DeVille

1 Answer

1989dodge ram 318 hesitates under acceleration


Spark Plugs?
Egr Valve?
Block Exhaust Converter?
Vacuum Leak?
Old Oxygen Sensor?
Plug Wires on wrong?
Moved Distributor-- which is for injector timing,not spark ?

Sep 08, 2014 | Cars & Trucks

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

Sensor code P0404 -- emissions system


P0404 EGR valve problem
Change the Exhaust Gas Recirculation valve.
This valve puts some of the exhaust gas back into the engine to cool combustion (to reduce spark knock) and lowers HC (emissions).

Aug 17, 2009 | 2003 Cadillac Deville

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