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I have a 2000 mercury Grand Marquis. When I strat cold the ...

Sent to Car Experts March 10 3:11 p.m.

I have a 2000 mercury Grand Marquis. When I strat cold the transmission shifts fine. When it warms up the car shudders when it shifts from low. Any ideas?

Optional Information:
2000 Mercury grand marquis 8cy

Already Tried:
Had transwission flushed and replaced filter and fluid. The problem started after the service. I have 99,000 mi.

Customer (name blocked for privacy)

Status: Closed Value: $9

Answer
March 10 3:15 p.m. (4 minutes and 5 seconds later)

ACCEPTED

yes-have the transmission serviced-tell them to drain the converter as well-refill the trans with new fluid and i add a transmission additive when i do this-this ia a very common problem and this repairers 90% of the cars-the other 10% waited to long and the valves inside the transmission fail-so do it soon-

sorry i didnt read that you already had the trans serviced-after a transmission flushing dirt and gunk get dislodged and can plug up the shift valves-take it back to the shop that did the service-tell them to redo the service again-but have the transmission hot and at normal operating temp.-this may(or may not dislodge the dirt in the valves-if it doesnt then they will need to go inside the transmission to replace the bad shift valve(solenoid)

hope this helps

gene

Edited by GENE on March 10 2008 at 3:21pm

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Reply
Sent March 10 3:27 p.m. (11 minutes and 34 seconds later)

Gene
I had the transmission serviced o 12/14/07. I t was after that that the problem appeared. They did a transmission flush and replaced 13 quarts of fluid. I dont know if this included the converter. Do you suggest that I put in an additive? If so what type?

Thanks

Customer (name blocked for privacy)

Answer
March 10 3:35 p.m. (8 minutes and 34 seconds later)

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GENE -- Auto Service Technician -- 100% Positive Feedback on 509 Car Accepts
ASE MASTER TECH 40 YEARS IN THE INDUSTRY

Answer
March 10 4:25 p.m. (49 minutes and 12 seconds later)

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GENE -- Auto Service Technician -- 100% Positive Feedback on 509 Car Accepts
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