2001 Grand Marquis Lurching
I recently bought a Grand Marquis w/ 93k miles that initially ran very well.
In the past couple weeks, these "symptoms" emerged. 1) Coasting at 25-30mph, when applying a slight amount of acceleration before an incline, the car lurches over and over like it can't shift into 2nd gear. If I give it just a little more gas, it drops to 2nd and picks up speed with no problem. What gives? 2) Coasting at 45-50mph, in overdrive, over flat terrain with minimal gas to maintain speed; car suddenly lurches (only once and for a moment) which feels like a random hard shift down. I let off the gas for a second and all is normal (until the next time). What is this? I first suspected "gear hunting" but the randomness of this lurching problem is making me worry. Also, transmission fluid appears clean without burnt smell. Any advice would be greatly appreciated. |
Sounds like what you suspect as gear search...If I intend on driving around town without getting over 50mph I click the overdrive OFF...It seems much easier to drive without the trans trying to find a gear to stay in..Have you done a complete trans service..Fluid,filter and gasket??? I have a 2001 Grand Marquis LSE(floor shift model)..Try driving with the od off...
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Thanks Paul,
I do keep the o/d off as much as possible, unless going on the highway, which does help to avoid the lurching. I haven't had a trans flush yet but am trying to determine if I need one. The trans fluid is pink and without odor so I'm not sure what else to look for. Since my post the other day, I drove 200 miles through mountainous Vermont with very few noticeable "gear searches". Than earlier today, with o/d off, coasting at about 30 around town, I noticed on two separate occasions the strange single lurch that feels like a hard shift down. Being that both times I was maintaining a stable speed with a steady amount of gas on flat terrain, I still can't figure that one out. The only other variable was that it was snowing and the roads were slick. I can easily deal with vehicle quirks; I just moved from a small island in the Caribbean where every vehicle has endless issues. I'm just worried that the transmission will drop out and leave me screwed. -Kevin Parker |
I ALWAYS change out my fluids on any car I get..Sometimes previous owners will just swap out oils and not change the filter just so the fluid looks good,Just a thought...
Does your car have the stock rims on it? sometimes people put oversized rims on and it screws with the gear ratio... |
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