1999 GMC Yukon Logo
Posted on Jul 02, 2008
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1999 Yukon cold start problems. I replaced the fuel pump, fuel relay module, fuel filter, fuel pressure regulator, battery, alternator, starter, throttle position sensor, spark plugs, spark plug wires & distributor cap. Fuel pressure is fine 60 psi. Checked for spark, sparks just fine. I put a little gas down the throttle and it started but eventually died. I started having this problem in the mornings only until it gradually worked it's way to not start at all.

  • 3 more comments 
  • Anonymous Aug 05, 2008

    Sounds like same problem I'm going thru right now. After setting for hours, starts hard. Eventually just stopped starting altogether. At shop now.

    Had replaced fuel filter, checked fuel pressure (58lbs) held steady after shut down for over 5 minutes with little decrease in pressure.

  • Anonymous Jan 03, 2009

    I have the same issue. Over the past few months I have replaced the Fuel Pump, fuel filer, EGR valave, PCV Valve, and just recently the ignition coil. It ran fine for a day and then back to having hard starting problems and misfiring at speed. I'm heading to the store right right to pick up and change the crankshaft position sensor. It the only thing I can think of that it might be. If this doesn't work, I may change the camshaft position sensor.



    More to follow....



    Good luck

  • slimthug30 Jan 27, 2009

    i just change my fuel pressure regulator and now the truck wont start did i do anything wrong is there a restart bottom.

  • Anonymous Mar 14, 2014

    1989 Toyota with 3.0 it starts an runs for 3 to 4 seconds then dies I put in new fuel pump an fuel pressure regulator an new plugs an wires an cap it loses spark when I try to start it again I also had a different coil an a different computer an tried that still nothing

  • Anonymous Mar 15, 2014

    my son's mgf will still not start.I have checked and replaced the spark plugs I have recharged the battery.I have checked the air filter.

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  • Posted on Dec 08, 2008
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1999 Yukon Start Issue - I have replaced the octopuse, battery, fuel filter, fuel pump, still having problems starting in cold weather, sometimes after a heavy rain.

Any suggestions?

Thanks

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  • Posted on Jul 02, 2008
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Check the condition of the wiring coming off of the ECM. at the fender. I've seen the wiring insulation rub off causing no starts.

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By mazingerdavi on Sep 04, 2011
i have a lot problems when i need to start the engine in my genesis 2.0 coupe why is this,,i took the car to the dealer but cant find a problem,they say battery is ok
The national auto parts chains (AutoZone, Pep Boys, and Advance Auto Parts) will hook up a
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way to exonerate & differentially diagnose your Alternator/Battery/Voltage Regulator.

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1 Inspect Battery Battery Discharged or Faulty.
2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
4 Inspect Distributor Cap Distributor Cap Cracked or Burned contacts.
5 Inspect Coil - Ignition Faulty Ignition Coil.
6 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter Starter Motor Faulty.
9 Inspect Fuel Pump Low Fuel Pressure.
10 Inspect Solenoid Switch Faulty Starter Solenoid Switch.
11 Inspect Relay - Fuel Pump Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Motor Faulty Starter Motor.
15 Inspect Fuel Injector Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The ECC.
18 Inspect Fuel Tank Fuel Tank Empty.
19 Inspect Carburetor Carburetor Flooded or Faulty Choke.
20 Inspect Distributor Worn, Loose, or Incorrectly Installed Distributor.
21 Inspect Distributor Rotor Burned Distributor Rotor contact
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You already took #1 off the list.
The national auto parts chains (AutoZone, Pep Boys, and Advance Auto Parts) will hook up a
diagnostic tool to your car to perform a Charging System diagnosis for free - its an easy
way to exonerate & differentially diagnose your Alternator/Battery/Voltage Regulator.

Priority Action Part Type Cause
1 Inspect Battery Battery Discharged or Faulty.
2 Inspect Battery Cable Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
4 Inspect Distributor Cap Distributor Cap Cracked or Burned contacts.
5 Inspect Coil - Ignition Faulty Ignition Coil.
6 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter Starter Motor Faulty.
9 Inspect Fuel Pump Low Fuel Pressure.
10 Inspect Solenoid Switch Faulty Starter Solenoid Switch.
11 Inspect Relay - Fuel Pump Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Motor Faulty Starter Motor.
15 Inspect Fuel Injector Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer Clogged or Dirty Fuel Pump Strainerat.
17 Inspect Engine Control Computer Incorrect Operating Information Being Delivered and Sent From The ECC.
18 Inspect Fuel Tank Fuel Tank Empty.
19 Inspect Carburetor Carburetor Flooded or Faulty Choke.
20 Inspect Distributor Worn, Loose, or Incorrectly Installed Distributor.
21 Inspect Distributor Rotor Burned Distributor Rotor contact
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My car wont start

1 Inspect Battery -- Battery Discharged or Faulty.
2 Inspect Battery Cable -- Corroded, Broken, Shorted or Poorly Connected Battery Cable.
3 Inspect Distributor Cap -- Distributor Cap Cracked or Burned.
3 Inspect Fuel Filter -- Clogged or Dirty Fuel Filter.
5 Inspect Coil - Ignition -- Faulty Ignition Coil.
6 Inspect Wireset -- Worn, Damaged or Faulty Spark Plug Wire(s).
7 Inspect Spark Plug -- Incorrectly Gapped or Fouled Spark Plug(s).
8 Inspect Starter -- Starter Motor Faulty.
9 Inspect Fuel Pump -- Low Fuel Pressure.
10 Inspect Solenoid Switch -- Faulty Starter Solenoid Switch.
11 Inspect Relay - Fuel Pump ----- Faulty Fuel Pump Relay.
12 Inspect Fuel Injector Pressure Regulator --- Faulty Fuel Injector Pressure Regulator.
13 Inspect Ignition Switch --- Improperly Connected or Faulty Ignition Switch.
14 Inspect Starter Drive --- Faulty Starter Drive.
15 Inspect Fuel Injector --- Dirty or Worn Fuel Injectors.
16 Inspect Fuel Pump Strainer ---- Clogged or Dirty Fuel Pump Strainerat.
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THE TRUCK IS HARD TO START SOMETIMES

Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.

Inspect Fuel Injector Cold Start Valve Damaged or Faulty Cold Start Valve.

Inspect PCV Valve Plugged or Damaged PCV Valve.

Inspect Spark Plugs Fouled Spark Plugs.

Inspect Relay - Fuel Pumpat Faulty Fuel Pump Relay.

Inspect Hose (PCV)at Clogged or Collapsed PCV Hoses.

Inspect EGR Valve Improperly Functioning or Faulty EGR Valve.

Inspect Valve Burned, Worn, or Sticking Exhaust Valves.

Inspect Wireset Worn or Damaged Spark Plug Wires.


Hi, i have listed a cluster of problem spots that you will need to inspect for damage. You will find that your hard starting issue will be the cause of damage in one or more of the above problem areas listed above. Please check each area thoroughly for ware and tare and possible damaged components as well. replace any damaged or worn device listed above.

Please rate and god bless:)
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