Question about 1986 Chrysler New Yorker

2 Answers

1986 Chrysler New Yorker 2.2 L M.P.F.I Turbo Diagnostic Drivibility Problems

I have a 1986 Chrysler New Yorker 2.2L M.P.F.I Turbo with 20,000 on a freshly rebuilt engine I rebuilt and I have done a lot of diagnostics on this vehicle and haven't figured out this puzzling problem yet. I get no codes at all. The car will start and run for a short time then stumble and die. I can start it back up and it will keep doing this over and over. It will sputter and die also on high acceleration so I know it's not the EGR Valve. I replaced the Logic and Power Module, Distributor Cap, Rotor, Spark Plugs and Wires. The timing is erratic on it and has always been like that since the car was bought 15 years ago but ran fine until this problem occured two years after I put 20,000 miles on the rebuilt engine. The Timing Belt is new, the cog gear settings are set per factory specs. There are no vacuum leaks or electrical wiring that has broken circuits. The compression is 135lbs on all four cylinders give or take a few lbs. I have checked the Hall Effect Module and that's good. I have checked the coil and that's good. One thing I have not done is replace the MAP sensor and here is the question. I disconnected the Map sensor electrical connector and the car started up and ran but the same problem was still there with it stumbling, and dying. I read that if you disconnect the MAP sensor connector and the car starts up and runs that the MAP is bad. Is that true. My MAP sensor connects into the Logic module on this car. Is there something else I may have over looked to why I am having this problem of it starting up and running rough then dying? Also at times it wants to crank over like the timing is way off when I am trying start it and other times it cranks over smoothly. The spark plugs all have a black soot on all four evenly so that tells me I have a rich condition. The starter is good and so is the battery so there is no problem there either. I am really puzzled about this and hope I can find someone that hly before. It's a quirky problem to try and diagnose.

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Sounds to me like the mass air flow sensor is dirty. There is a special spray that you can use to clean that sensor. You can buy that at any auto parts store to clean it. The sensor is a bunch of fine wires. If any dirt gets in there it can affect how the car idles and drives. The Mass Air Flow Sensor should be located on the air cleaner assembly somewhere and probably has T-120 tamper proof safety screws on it. You can buy the safety screw bits for 5 bucks at Autozone to remove the sensor. Hope this information helps you. P.S. If the mass air flow sensor is dirt or bad it will affect other sensors like the map sensor and other stuff and possibly thow codes that dont pretain to the prob your having. Good Luck :) Draz

Posted on Apr 24, 2010


All I can say is check your fuel system. Things like the filter, collapsed lines and the such. Also check pressure on fuel pump. What you describe sounds too much like fuel system problem.

Posted on Oct 23, 2008


6 Suggested Answers

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Stumbles/cuts out,on acceleration

We had the same problem with our Blazer, and after thousands of dollars and multiple shops returning it to us.....It was the fuel lines on top of the motor. one of them had a small crack in it. Vortec is FAMOUS for it. scence then I ll buy other peoples head aches and sell them. wish I would have known sooner

Posted on Sep 11, 2009

  • 625 Answers

SOURCE: 1990 buick regal 3.8L- Backfires, stumbles on acceleration

most likelly it is your fuel pump is not puting godd fuel pressure
have the fuel pressure test and if it is low have the fuel pump and filter replaced

Posted on May 28, 2008

  • 21 Answers

SOURCE: Stumbles and backfires on acceleration

Check the distributor shaft. They have a history of developing finite cracks that causes the condition your describing. Let me know if I can help you with any other info.

Posted on Jun 01, 2009

  • 1 Answer

SOURCE: 2003 Lincoln Navigator stumbles/bucking under mild acceleration

I have a 2003 Nav with the exact same problem. I've found it diminishes when taken out of overdrive. Also it's intermittent but more towards bucking. Sorry to post this under solutions.

Posted on Nov 06, 2009

  • 3854 Answers

SOURCE: The idle has an intermittant stumble

Your Idle Air Control (IAC) valve may be dirty with carbon, simple fix with throttle body cleaner through the IAC passageway through the throttle body. Make sure it's throttle body cleaner and not carburetor cleaner, the carb cleaner is to corrosive to the gaskets used on the throttle body.
If cleaning the IAC does not help, then it's a good chance that the IAC is to far gone and will need to be replaced.
Good luck and thank you for using fixya

Posted on Jun 01, 2010

Testimonial: "This was quick and efficient. Thank you very much."

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Rough idle loss power

Hi ~ This is going to sound crazy but it may work. I had a 1984 Chrysler New Yorker, stock. having the same power loss problem and I just changed the gas cap for a new locking one, and it ran great, something to do with the vacuum build up in the tank. not venting properly, apparently. Cheers, Gary

Apr 14, 2014 | Chrysler New Yorker Cars & Trucks

1 Answer

What does the 3-10 code mean for the 91 chrysler new yorker 3.3 litre

There is no 3-10 code for the 91 chrysler new yorker 3.3 Liter. Are you sure it is not blinking another code?

Fig. 1: Diagnostic trouble codes and descriptions - all vehicles 86724080.gif
Fig. 2: Diagnostic trouble codes and descriptions - all vehicles 86724081.gif

Dec 25, 2010 | 1991 Chrysler New Yorker

1 Answer


you need to check the fuel pressure on the rail it seems too low

Jan 26, 2010 | 1986 Chrysler New Yorker

1 Answer

Where is the voltage regulator on a 1986 new yorker 2.2 turbo i,ve checked all over under the hood with no luck should,nt it be on the passengers side wall,thanks in advance,gary.

chrystler had a rash of vechiles that they used the ecm as the voltage regulator, if this is the case and your new altenator is not charging then you can install a diode pack obtainable at your local parts store. it could also have an internally regulated altenator.

Oct 09, 2009 | 1986 Chrysler New Yorker

1 Answer

85 new yorker 2.2 cant find paint code

Have you located plate with all the numbers on it yet? Usually on firewall, or below windshield,or upper rad support area.

Aug 24, 2009 | 1985 Chrysler New Yorker

1 Answer

Getting to much gas

I had the same problem with my 87 new yorker. After alot of research and messing around I found it could be a few things. The Map sensor $55 on left side fender, the PCM located inside the air intake tube $50 at junkyard, also make sure that the injector is not stuck open and that both connections on the injector are connected securly.

Apr 05, 2009 | 1988 Chrysler New Yorker

Not finding what you are looking for?
Cars & Trucks Logo

656 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chrysler Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers


Level 3 Expert

814 Answers

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

Answer questions

Manuals & User Guides