Question about 1993 Buick Roadmaster

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I have a 1193 buick roadmaster that idles fine but cuts out when I try to accelerate.what might be the cause?

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Check the fuel pressure and fuel volume you could have a bad fuel pump. also check the TPS, throttle position sensor, it could be worn.

Posted on Mar 28, 2015


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99 buick regal supercharge starts fine in the morning but after accelerating cuts off

You have a MAF and MAP, The mass air flow signal varies with engine load.It is attatched to throttle body. This if it is the primary signal can cause the problem you desribe try and disconnect it and see if it idles properly. The next item you need to inspect is the MAP ,manifold air pressure this is a back up for the MAF sensor.If this sensor fails you will not accelerate correctly and stall out flooding the vehicle with fuel. This monitor the MAF and your EGR. If the EGR valve is stuck open the vehicle stumble and stall out and affect the performance of the MAF and MAP.Make sure your MAP is connected and the vacuum hose is attatch this item is located at top rear engine compartment near fuel injectors

Feb 24, 2012 | 1999 Buick Regal

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1994 buick roadmasters stall when it warms up replaced pcm mafs ingnition module coil cap rotor idle control valve plugs wires will run fine then sputters and eventually stalls they tell me the catalitic...

You need to retrieve the codes using an OB11 meter. It could be a number of things causing your problem. It could be an o2 sensor, coolant sensor, idle sensor or the fuel filter . I doubt it's the converter. OB11 is not too expensive & easily read. They range in price from 40-200 dollars. The cheaper one will suffice. Good luck! PS I don't think OB11 will read on your car; however, check with any autoshop & they may be able to show you the proper tool to obtain the codes. Good luck!

May 23, 2010 | 1994 Buick Roadmaster

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My 1993 Buick Roadmaster hesitates and jumps going up hills.

Have the fuel pressure checked the fuel pressure regulator valve may be acting up, it should be at 30 psi or greater at idle. It may also be a Oxygen sensor causing the car to run lean on acceleration, if it has never been changed have the primary or bank 1 O2 sensor changed out they should be done every 60,000 - 80,000 miles. If all this has been done there may be a vacuum leak somewher in the system and by the way all vacuum hoses should have been checked during the tune up.

Sep 22, 2009 | 1988 Buick LeSabre

1 Answer

Sputtering while driving

try a tune up-plugs and wires-and air filter

Apr 22, 2009 | 1992 Buick Roadmaster

1 Answer

My gas guage dont work how do i fix it?

I know EXACTLY what the problem is. You are not alone. Many Buick Roadmasters had this problem. Its in your fuel tank. The fuel bob gets stuck and even sometimes in the filter it cuts off the gas to prevent strong acceleration. This is not a cheap fix unless you do it yourself. The gas tank either needs to be removed or cut open. This is coming from a prior Buick Roadmaster driver. Call your Buick dealer, they can help you out.

I hope this helps.

Mar 31, 2009 | 1992 Buick Roadmaster

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