1989 Buick Park Avenue Non-starting

Tiny
SIMANCO
  • MEMBER
  • 1989 BUICK PARK AVENUE
  • 205,000 MILES
Our Buick Electra Park Avenue has developed a non-starting problem. It will crank and crank and never give any sign of starting.

This started as an intermittent problem and you could eventually get the car to start.

The fuel pump and filter have been replaced.
The camshaft and crankshaft sensors have been replaced.
The main computer has been replaced.
The spark plugs have been replaced.
The Idle Air Control Valve has been replaced.
The ignition control module has been swapped-out for a known working one.
The coil packs were swapped out for new ones.
The plug wires were checked.

Only on occasion will you ever smell any gas fumes when trying to start the car.

Back when you could get it to start, it would crank and crank and not even attempt to fire up, but once it decided to try to start, it would start immediately as it always had.

This car has no remote entry but for quite some time has had a habit of unlocking itself, the trunk popping open at random or the alarm going off at random. People who sell security bypass kits tell me this is not an issue with this car.

My mechanic tells me that there is spark and compression and air and fuel.

The starter is a beast - I drained a full battery the last time I tried to start it.

It still runs great when it will start.

Any and all advice would be appreciated.

Thank you,
Jim
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Tuesday, August 13th, 2013 AT 9:37 PM

3 Replies

Tiny
OBXAUTOMEDIC
  • EXPERT
Hello,

Ok, I see most everything that you done. The one thing I don't see is anything about the Fuel Pressure Regulator, So, try this Turn Key to On Position(Not Start Position) then back off, do this about 4 or 5 times, this will pressurize the system if it is not already pressurized, if vehicle starts the your problem is the pressure regulator, replace it and should start just fine.

Also depending on the engine size, I believe the 2.8L has a Cold Start Valve, If your is the 3.3L on the left side of the engine off of the Fuel Rail will be another tube leading to the valve.
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Thursday, August 15th, 2013 AT 8:55 AM
Tiny
SIMANCO
  • MEMBER
Thank you for your reply.

It is a 3800 Series Vin C.

Turning the key on and off multiple times seemed to help sometimes but not every time.

The Mechanic did say that the fuel pressure was okay. He said he pulled a fuel line, and let it pump into a container.

Any other thoughts?

Thanks again,
Jim
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Thursday, August 15th, 2013 AT 12:41 PM
Tiny
OBXAUTOMEDIC
  • EXPERT
Sorry for delay in responding.

Did he actual put a Fuel Pressure Tester on the Vehicle? Just because there is good flow when line is disconnected doesn't mean anything in Fuel Injected Vehicles, there is a specific pressure needed for a correct spray pattern, anyway, if he used a fuel pressure tester he should have been able to tell if the pressure regulator was weak or bad.

Honestly, I would replace the Fuel Pressure Regulator. If everything else is checking out and you've replaced pretty much everything else except the pressure regulator.
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Wednesday, August 21st, 2013 AT 5:12 PM

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