Question about 1995 Cadillac DeVille

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No Spark I just replace a 4.9L in my 1995 DeVille. I have checked and double checked all connections and replaced all of the spark related components but still no spark. I have spoken with the local dealership and a shop specializing in electrical and they don't have an idea what it could be. If you could tell me if I may have missed anything I would appreciate it.

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  • Rick Byrd
    Rick Byrd May 11, 2010

    I know 1 of the techs in a local shop that pulled his hair out on the same job your describing , he had no spark , he thought it was the immobilizer , he had codes , went on for a week , till he found a ground wire missed at the bell housing , i feel for ya . good luck .

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Try replacing distibutor, i had problem like this and now car runs

Posted on Jan 17, 2009

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1995 geo metro humid weather starting problems 3 cylinder


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When was the last time you had your spark plugs replaced? Sounds like a miss to me.

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To get a tune up on m 95 cadillac deville what parts do I need.


I would start by getting spark plugs and spark plug wires. And find out (through part store)what the gap is for your plugs.Then i would replace the cap and rotor and check your air filter. If you have over 60,000 miles i would also change the trans.filter and fluid




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Jun 10, 2011 | 1995 Cadillac DeVille

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My 1995 Deville has a idling issue, replaced new water pump, map sensor and idle control valve...still not fixed. .any sugestions??


Many times this issue can be caused by a dirty air filter, I would start there if you already
haven't done so.

Also, if you haven't recently changed your spark plugs and wires you may consider pulling
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Jan 22, 2011 | 1995 Cadillac DeVille

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No spark or fuel in a 1991 explorer


Concerning the fuel issue, i would check these components listed below for faults and possible damage as well. any damage or apparent malfunctions in these specific devices will disrupt normal fuel flow in this vehicle. The list follows.

1. Inspect the Fuel Filter-- This filter may be clogged or dirty. replace if faulty.
2. Inspect the fuel pump relay-- This relay may be faulty and not functioning at this time. it will cut of the flow of fuel if so.
3. Inspect the Fuel Injector Pressure Regulator-- This may be a problem spot as well if it becomes unstable and unable to regulate the pressure.
4. Inspect the fuel pump-- This device actually pumps the fuel needed for operation. if its not working, it will disrupt the flow of fuel to the injection system as well.
5. Another problem spot will be the Engine Control Computer-- This device is vital to proper spark and fuel operation. if its malfunctioning, it will affect spark and fuel flow. check accordingly for faults. also know as the ECM/PCM.
6. Inspect the Fuel pump strainer--- This device could be clogged or dirty as well. replace if found to be dirty or clogged.

Concerning the Spark-- This issue can encompass many problem areas in the engine compartment. One common issue with a non spark issue would be the distributor cap or ignition coil. most newer vehicles will have the coil and older models will have the distributor cap design. I would check the distributor, if installed for a cracked cap or burned components as well. if your model has a coil ignition system, i would test its operational value as well. Also, check the Wireset as well.

Check the spark plug wires for worn or damage insulation. make sure they are connected to the plugs securely and tight.

Inspect the ignition switch for broken connections. this switch, if faulty, can affect proper ignition timing and spark as well. Your vehicle has a distributorless system and i will address the proper procedure that will allow proper testing results.

The distributorless ignition system used by 1991-94 2.3L and 4.0L, and all 1995-99 engines is referred to as the Electronic Ignition (EI) system. It eliminates the conventional distributor by utilizing multiple ignition coils instead. The EI system consists of the following components:

Crankshaft Position (CKP) sensor Ignition Control Module (ICM) (EEC-IV systems only) Ignition coil(s) The spark angle portion of the Powertrain Control Module (PCM) Related wiring


I recommend testing all EI system components for faults. if there is a fault an any of the EI system devices, it will disrupt the ignition system and it will cause a non spark issue that will result in a non start.

Please rate and god bless:)


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Regards,

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