Question about 1998 Buick Park Avenue

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Fuel system In my 98 park avenue, it will idle fine but when you give it gas the rpm's decrease and you barely move at all. Any help will be helpful.

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Check the pressure regulator on ur fuel rail

Posted on Aug 31, 2008


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Idles roughly, then low when stopped or in park, then dies. Decreasing gas mileage. Slow to accelerate

Sometimes that's caused by a vacuum leak near the manifold area.

Sometimes air in the coolant will cause an idle problem. Air will keep the air temp sensor from sending proper info.
Hope this helps.

Jan 03, 2014 | 2004 Ford Taurus

1 Answer

Sometime car barely starts runs rough till rpm's build up

Check everywhere for air leaks. If it has a carburettor start the car and spray butane gas around it, if the revs increase then you have a leak somewhere as it is sucking in this extra fuel.

Mar 18, 2012 | 1995 Buick Park Avenue

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98 ford explorer high idle

Its either a faulty idle air control valve or a faulty fuel pressure regulator.My bet would be the idle air control valve. If you pull the vacuum hose off the fuel regulator or the map sensor and fuel runs out then the regulator is bad.If you replace the control valve then you have to reset the computer.

Jan 14, 2012 | 1998 Ford Explorer

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98 crown vic idles great put it in gear and it will barely run. Just purchased it and no battery in it so therefore it hasn't throwed a code yet

Hello, when you start it next, let the engine run at 1500RPM for about 10 minutes. In a state that has an Emissions test, that RPM is fast enough to measure the tailpipe Emissions. It therefore means all the Sensors should be working and reporting to the onboard computer. If something is going wrong a Code should pop up.

There is an automatic Parking Brake release which can use vacuum. When you shift out of Park, the valving on the switch moves and routes vacuum to the release. If the release diaphragm is leaking or the switch is cracked, it will lose Vacuum and the engine won't idle in gear.

Check your Intake manifold for Vacuum leaks in Park, with the motor running. Use either a water spray bottle or choke cleaner that is safe for plastics and rubber. Spray around seams and on Solenoids with Vacuum hoses. Check your EGR valve.

You may want to do a fuel sample and install a new fuel filter. At idle or out of gear you are not putting a power demand on the motor. Flat fuel can show up when the engine demands power.

Clean your sensor in the air Intake with Electronics cleaner. Check your trans fluid. There is also a TPS throttle position switch which may be giving the wrong info when you need to push the throttle down farther to move your car.

I hope my solutions help and you can use the reply for more help later.

Feb 06, 2011 | 1998 Ford Crown Victoria

2 Answers

91 buick park avenue. Car stalls and only runs if I keep foot on gas pedal. Also, speedometer needle goes crazy when stalling problem occurs. Sometimes car will work just fine after numerous attempts at...

Sounds like an electrical problem. Remove all three battery cables , clean them along with the contacts at the battery and replace both bolts. These cars have two positive cables, one to the starter and one to the engine body electrical system. Try this and reply back.

Aug 09, 2009 | 1991 Buick Park Avenue

1 Answer

Not idling well

Could be many things Mass Airflow Sensor, coil pack, O2 sensor , plugs ,wires right down to fuel filter. . It all depends on how well the car has been maintained . If you know the maintenance history of the car then you can start crossing things off one at a time till you come across something that hasn't been changed in a while like plugs for example .

Jun 09, 2009 | 2001 Hyundai Sonata

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