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2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
10-20-2012, 08:51 PM (This post was last modified: 10-20-2012 08:59 PM by 3carfamily1wrench.)
Post: #1
2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
live in north florida car was bought used three yrs has 176,ooo currently been a reliable car . Hello to all this is my first post.Going to job interveiw at 70 down highway and bang like if a motor mount was bad.I pulled over to brake down lane .Tried moving car in drive went a few feet then that bang again.Had towed home.in the am i started it it shifted in all forward gears no reverse.went to fuse box removed relay no gears switch relay with another relay got forward gears again still no reverse.check fuse is good.under the car is normal oil for its mileadge nothing obvious or fresh,Pulled dip stick oil is clean and smells fine no burnt or metal.what can i look for especially to check reverse. How do you check and adjust band . what and where can i look.My daughters 98 honda I just replaced her engine and automatic ,my 90 ford ranger having issues but drives at least into second gear till I can explore that issue, now my wifes car, when it rains, it pours ,so please helpful suggestions.Im expert on oldschool mechanics and a beginner on these electronic controled transmissions and engines.ive had my share these past two months . But Im learning as I go .Thank you for any effort .
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10-20-2012, 10:33 PM
Post: #2
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
Welcome to the electronic world of car problems!

My gut feeling is you broke something expensive inside the trany. There's two ways to find out, neither of which is perfect for a 100% diagnosis. It's just a direction of what to look for later.

The first is you can get someone to scan for trany codes. With a good scanner they can actually read the wear on the clutch packs (nice MOPAR feature) and manually activate certain functions right from the driver's seat. If the guy has some experience that will be a bonus in reading between the lines.

The second is you can pull the pan and side cover to look for broken parts that have fallen to the bottom. Anything in the bottom is a message to take the trany out for a full tear down.

I wont go into details for band adjustment because if one goes out that fast an adjustment will not fix it. I will tell you that I have seen a broken band in the older Caravans and there's always parts in the bottom of the pan. You cannot change a band without a tear down. All you can do is verify that it's broken.

Let us know what you find.

BTW, I will let our Ford guy ponder your other question.
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10-20-2012, 11:06 PM
Post: #3
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
Thank you sounds like sound advise.my friend down the street has a pro scanner with multiple attachments ill see if he can plug in and see.I will take covers off after the plug in diagnosis to look for the broken.ill also start looking for a tranny .I was seeing people talking about a solenoid pack i did solinod hunting on daughters honda gear box and tested them so I was wondering if these seems like a solinoid issue in any way.just throw that out there .
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10-20-2012, 11:11 PM
Post: #4
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
The scan should tell you something but in my mind a big bang = big break most of the time.

BTW, don't overlook a broken CV joint. Not likely but anything is possible so start with the easy / external stuff.
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10-20-2012, 11:24 PM (This post was last modified: 10-20-2012 11:59 PM by 3carfamily1wrench.)
Post: #5
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
OOh I agree with you ,Ive restored lots of sports cars of all types racing street and kit cars .had my own shop for 18 years I have a black belt in solving problems ,just new to the world of electronic controling sensor solenoids and computers running the works.i think the bang wasnt like a rod leaving thru the side of a block or anything more like a motor mount on a front wheel drive bangs when the engine rock forward or back with a worn out mount .just think going 70 in my mind it was a bang ,then a what the....is it now .as i tried to get out of morning commute traffic with out causing a pile up.
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10-24-2012, 11:55 PM
Post: #6
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
going to get a warranty autmatic and fit that in it its a good car as it didnt break on my wife and kids trip out of tonw for three days it at least waited till I was in it which is the best way for it to go.

Just time for a automatic . Thanks for your help.
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10-25-2012, 06:18 AM
Post: #7
RE: 2002 dodge GrandSport 2w drive automatic quit at 70 miles per hour down highway
If you are going to do the installation personally, keep in mind that most Chrysler products of that vintage require some sort of "Set Up." I usually done what was called a "Quick Learn" with a full function, OBD-II scanner. It can be done without the scanner but it is a very lengthly & complicated process. Without set up you can destroy the transmission in a very short time. Check it out & know what you are getting into in advance.

Please let us know how you make out.

Thanks for using the forum,
Garner

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