JustAnswer > Mercury
Ask A Question|Register|Login|Help
JustAnswer

Mercury

Ask a Mercury Question, Get an Answer ASAP!

Have your own Mercury question?

24 Mercury Mechanics are Online Now
characters left:
Not a Mercury Question?

Related Mercury Topics:

  • Car
    • ,
  • Gas
    • ,
  • Maf
    • ,
  • Back
    • ,
  • Flow
    • ,
  • Mass
    • ,
  • Load
    • ,
  • Runs
    • ,
  • Scan
    • ,
  • Stop
Bookmark and Share

Question

I have a 1995 mercury grand marque, 4.6L, when you just get going and the engine is warming up, the car some times hesitates and acts like it is lacking gas, if you play with the gas pedal it seems like all at once you get going. I have replaced the throttle control, What else should I be looking at?

Submitted: 254 days and 14 hours ago.
Category: Mercury
Value: $13
Status: CLOSED
+
Read More

Optional Information

Year: 1995
Make: Mercury
Model: grandmarquie
Engine: 4.6L

Already Tried:
injector cleaner, replaced throttle control mod, cleaned all ground contacts, checked fuel pump-good

Posted by Richard 254 days and 11 hours ago.

Info Request

Hello and welcome to justanswer.com

 

When you say throttle control do you mean the throtte position sensor? Is the check engine light on? Is the hesitation only on acceleration from a stop?

254 days and 1 hours ago.

Reply

I replaced the throttle posistion sensor unit, also the check engine light IS NOT ON, it only happens after you start the car, and while warming up while driving.

Posted by Richard 254 days ago.

Answer

Ok sounds like you have a problem with the mass air flow sensor mounted behind the air cleaner. Disconnect it and drive the vehicle. If it runs and drives better then you have a faulty MAF sensor.

250 days and 14 hours ago.

Reply

Sorry for not getting back to you, we had a out of town emergency. I did unplug the mass sensor, no change. When it gets about a third of the way warm, I have the motor hesitate, like it is not getting enough gas. Any other ideals ?

Accepted Answer

I see alot of problems with the ignition wires causing the miss and hesitation. This is usually under load. Sometimes you can spray a mist of water on the wires to see if the engine starts missing. Also even though the engine light is not on you should still see if any fault codes are logged. You will need a scan tool to do this. I recommend that you try your local parts store or autozone as they will usually do this at no charge.

Picture
Expert: Richard
Pos. Feedback: 100.0 %
Accepts: 131
Answered: 7/8/2009

Mercury Technician

12 years at a Ford Lincoln/Mercury and Jaguar dealer as a technician and shop foreman.

+
Read More

Related Mercury Questions

  • Let's try this again. Have a squeaking noise coming from th...
  • 2008 Lincoln Town Car
  • i have 1994 sable 3.0 motor it has a idle that goes from ap...
  • 95 LINCOLN CONTINENAL WONT SHUT OFF
  • I TRY TO BACK UP MY CAR IT WILL NOT GO BUT WAS IT NETURA YOU
  • 2005 merc grand wont start or turn over. I replaced the b
  • I found a 1999 Mystique with only 42000 miles. It was a moth...
  • 1996 lincoln mark 8 new front struts and compressor drier



Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Question List | Become an Expert | Terms of Service | Security & Privacy | About Us
© 2003-2010 JustAnswer Corp.