Question about 1992 Buick Park Avenue

1 Answer

What would cause a 92 Park Avenue to have a rich air fuel mixture

The car sudenly started runing bad, will not idle and is dificult to start. I have to releve some of t he fuel presure while it is being cranked to get it to start. I is rining very rich. I tride changing the fuel presure regulator and the O 2 sensor, nether one helped.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Buick Master
  • 17,970 Answers

The MAF could cause this, so can the Crank sensor.

You might want to try cleaning the MAF sensor wire with MAF cleaner before testing. Of course, a scan tool is the best method of testing. A full function scanner will show air flow in terms of grams of air per second (gps), with a range from 3gps to 150 gps. The MAF sensor produces a frequency output between 32 and 150 hertz.

The harness to your MAF sensor is three wires labeled A, B, and C. (it is that thing near the air intake area) It has a pink/black wire (C), a black/white wire (B), and a yellow wire (A). Wire C goes to a fuse in the relay center under the passenger side dash. Wire B goes to ground. Wire A goes to the PCM.

First thing: check the wires and harness for trouble; second: disconnect electrical connector, turn key to ON position, engine stopped. Read voltage between wire A and ground. It should be between 4-6 volts.

Is it? If yes, connect test light between wires B and C. Light should be on.
Is it? If yes, you have a faulty MAF sensor connection or sensor.
If no, connect test light between C and ground. Test light should be on.
Is it? If yes, the ground wire (B) has an open. If no, the pink/black wire (C) has an open.

If the voltage was not between 4-6 volts above:
- If it was less than 4 volts, either the yellow wire (A) is open or shorted to ground, or you have a faulty PCM.
- If it was more than 6 volts, the yellow wire (A) is either open to voltage or you have a faulty PCM.

Wire A goes to the PCM.
Wire B goes to ground.
Wire C goes to a fuse in the relay center under the passenger side dash.

Remember, you are checking for proper voltage going to the MAF sensor. If the voltage checks ok going to the MAF, then you have a problem with the MAF. If not, you have wiring, connector, fuse, or PCM problem.

You'll can checked the AC Delco web site for the part and the MAF for a '92 PA is either 213-230 or 213-1619. For the '92 PAU the number is a 213-231 or 213-1620. I didn't check Rock Auto, but they're pretty good on the cross references.

Good luck.

Posted on May 28, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

How do I adjust air fuel mixture on 1986 Toyota Cressida straight 6 cylinder dohc


Unless your engine has a carburetor, you can't adjust your fuel mixture. That is done by your cars computer. It analyzes your exhaust emissions and adjusts your fuel/air ratio.
Your oxygen sensor(s) may need to be replaced, or there may be a computer glitch causing the problem.

Feb 02, 2015 | 1986 Toyota Cressida

1 Answer

Engine knocking at startup


bad air/fuel mixture could cause rod knock like that, which is a for of backlash or whip like action. Detonation, like very poor grade of fuel. IF your engineis running really rich, the extra rich fuel goes by your piston rings and thins out your engine oil. If you have a bad ROD bearing, it is probably TOO LATE. CLEAN YOUR THROTTLE BODY and IAC valve, since these things fine tune your FUEL/AIR mixture and PREVENT rich running. GOOD LUCK!!

Dec 12, 2013 | GMC Yukon XL Cars & Trucks

2 Answers

Why is my gas milage so bad


Any details? ODB-1 is easy to diagnose if your lamp is on. Check air filter. Check fuel filter. Use no ethanol gas if possible. Check tire pressure and alignment. Remove excess cargo from the vehicle. Keep it clean.

Feb 23, 2013 | 1992 Buick Park Avenue

1 Answer

I have a 1999 Buick Park Avenue when I start it before It get started good it cuts off but starts back up & run great after until I start have to start it again I changed the starter on it after that...


could be many things,faulty fuel pump or idle air control valve going bad causing no idle.do a code scan replace fuel filter,replace spark plugs and wires if they have not been replaced.a bad fuel injector and slipped timing chain will cause vechicle no to start.but do a code scan first.if all is good replace plugs,wires and fuel filter do a little tune up that will tell you if you have engine mechanical problems.

Oct 23, 2012 | Cars & Trucks

1 Answer

98 buick park avenue will not start unless you stomp the gas pedal down and white smoke starts coming out the back end of the car what could be causing it to nbot start?


It is possible that the fuel mixture is not correct. If you have spare carb cleaner or a throttle spray spray the intake of the engine. It could just be dirt in the MAF sensor. Check if you are getting bubbles in the water inside the radiator once you have it started. You may get coolant inside the engine from a bad head gasket. You may also need to have the fuel pressure tested.

If you can, have a scanner connected to the car. You may have error codes stored inside it. Some shops would let you borrow their scanner.

Sep 11, 2011 | 1998 Buick Park Avenue

2 Answers

Car starts & runs ok when cold , starts to run poorly as it warms up. I have replaced the coils, fuel pressure reg,plugs, wires,&fuel purge valve


The first thing I would do is check the compression of each cylinder. When the engine first starts, the computer runs it at high idle and rich fuel mixture. This tends to mask mechanical problems within the engine that may be preventing it from running smoothly at a lower idle speed and leaner mixture. If the compression is good, then it is likely that you have a vacuum leak or faulty injector that is causing your rough idle.

Jan 10, 2011 | 2000 Buick Park Avenue

1 Answer

The idle jumps when engine is cold from 1000 to 2500 rpms and starts really rough requires pushin gas petal to start


Being efi (electronic fuel injection) the idle should be higher when starting off cold...in the older days, you used to use a choke, a handheld lever that you pulled out to shut off the air to result in a rich mixture...due to cold air there is alot of oxygen molecules, so a choke increases the fuewl mixture to compensate aiming for that 14.7:1 air to fuel mixture ratio


BUT it should not be that high, what is happening is that is dumping too much fuel in and you are having to go WOT (wide open throttle) to prevent a "flooded" condition..

Why ???? Well, it could be a faulty air flow sensor, a faulty or out of adjustment idle control, bad fuel, bad air filter, fuel filter, fuel injectors bad....etc etc

So, more info is required to solve it......when was the car last serviced, and does it only occur when cold, or do you notice that it is hard to start when hot as well.

Sep 27, 2010 | 1992 Honda Prelude

2 Answers

1991 buick park avenue with a 3800 series 1 sudenly has no spark to plugs. It has brand new spark plugs, spark plug wires, coil pack, alternator, fuel pressure regulator, fuel filter, serpentine belt, pcv...


ive had this problem before and it was a small wire on the ignition key cylinder that had broken but we fixed it by buying a new cylinder and wire

Apr 06, 2010 | 1991 Buick Park Avenue

Not finding what you are looking for?
1992 Buick Park Avenue Logo

Related Topics:

40 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8518 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...