How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask sprinkles08 Your Own Question
sprinkles08
sprinkles08, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 21583
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
9825021
Type Your Mercedes Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

My 1995 s500 revs and dies and revs and dies when it just

Customer Question

my 1995 s500 revs and dies and revs and dies when it just warms up. after a few minutes it clears out and runs just fine. The transmission upshift delay feature takes a long time to clear out as well. again after 10 minutes or so the car runs great. Any Ideas?
Submitted: 4 months ago.
Category: Mercedes
Expert:  sprinkles08 replied 4 months ago.

Hello and welcome to JustAnswer!

If these problems started at about the same time then the first thing I would suspect is an inaccurate coolant temperature sensor. If the coolant sensor is reporting an incorrectly cold temperature then it will cause the engine to run rich and poorly, and it can cause the trans issue you're describing.

Do you have a scan tool to monitor data?