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2006 Honda Accord Coupe EX MT

2006 Honda Accord Coupe
Trim Info:
Front Wheel Drive, 2 Door Coupe, Midsize
26 mpg city / 34 mpg hwy
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October 15, 2012, 7:50 am

Devin B
 

Question: Car only goes 70mph

I have a 1998 honda accord Ex coupe v6 and it runs fine for the most part, but one day im driving it and i get on the highway to go visit family and it drives good but then it gets up to about 70mph then stops accelerating and slows down to 60 mph then speeds back up again and repeats, idk what could be wrong with it since im not a mechanic, it drove well past that when my gas tank was above half and for some reason it doesnt get its rated mpg but some of my friends say it could be the governor shutting it down or the fuel pump or a fuel leak or the CPU module i have no clue, please help


October 21, 2012, 3:08 pm

Elizabeth K
Expert Mechanic

Do the rpms go down, or just the roadspeed? Have it scanned for codes. If no codes, have the TPS (throttle position sensor) and MAF (mass air flow) sensor tested. There is no governor on a manual transmission, and you listed your vehicle as a manual transmission. It is possible for it to be fuel pump related, but that would usually show up as problems accelerating, even at lower speeds.


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October 21, 2012, 4:01 pm

Devin B
 

The car is actually automatic, sorry i ment to list it as that and the rpms work normally, i took it to the shop and they said the reason that it shifting late and everything is because the transmission is slipping, idk how to fix that or how much its going to cost to fix that


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October 21, 2012, 4:26 pm

Elizabeth K
Expert Mechanic

When a transmission is slipping it is a sign of serious wear, and often requires a major rebuild (like $2k). But because the speed is going up and down, it's possible that your problem could be caused by a torque converter clutch issue, or something electronic. It's worth getting a second opinion on your repair, you may have to pay a shop to fully diagnose the issue and prepare an estimate, but when the cost is that high, it's worth the extra investment.


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