My 1992 3000gt SL wont accelerate quickly.

60

Asked by Dec 19, 2013 at 06:20 AM about the Mitsubishi 3000GT

Question type: Maintenance & Repair

The car does not accelerate fast at all. It accelerates as if the engine is not big enough or stong enough for the car. It's like ,you can feel how heavy the car is as you gain speed. The car has no get up and go. I had the trasnmission rebuilt, No change.  I replaced the main computer. No change. Any Ideas?

6 Answers

116,395

3L DOHC V6? How long since your last major tune up?(air filter, spark plugs, plug wires, fuel filter, ect). Automatic or 5 speed trans? How many miles on your timing belt? If not sure about timing belt check your timing belt tensioner to make sure it was still in spec. But if I was unsure I would have it and water pump changed. Better safe than sorry cause if it goes you will bend valves and have to do the heads. Check compression on each cylinder. The psi should be between 150psi and 200psi. I would not drive it in this condition until you narrow down that it's not a timing belt issue.

Best Answer Mark helpful
275

broken piston(s) bad piston rings. or the timing chain is slipping

1 of 1 people found this helpful.
60

Thank you for your answer. I like everything you said. It is a 3L DOHC V6. Automatic trans, with 122000 miles. About two years ago It had a squeeky belt, so firestone replaced the pully tenisioner on the serpintine belt. They also did a compression check for me, they said all 6 cylinders were ok. I didn't think about the timeing belt. After the New year I will have the timeing belt and water pump replaced and a tune up as well. Maybe I can find that acceleration again. Thank you. I'll keep you posted.

116,395

Your welcome. Good luck. These are great little cars and a lot of fun to work on and drive.

6,285

Keith your an idiot

2 of 2 people found this helpful.
35

I would not only change the belt, tensioner, water pump I would have the fuel injectors or replaced along with a new filter.If that doesn,t work for you, then you probably nave internal engine problems,,Good luck with your car,

Your Answer

3000GT

Looking for a Used 3000GT in your area?

CarGurus has 72 nationwide 3000GT listings starting at $3,195.

ZIP:

Mitsubishi 3000GT Experts

  • #1
    dandyoun
    Reputation
    2,590
  • #2
    Daniel Foster
    Reputation
    1,010
  • #3
    T_S_T
    Reputation
    260
View All

Related Models For Sale

Used Mitsubishi Eclipse
11 Great Deals out of 1,137 listings starting at $1,999
Used Mitsubishi Lancer Evolution
13 Great Deals out of 563 listings starting at $12,999
Used Ford Mustang
605 Great Deals out of 38,714 listings starting at $1,895
Used Dodge Stealth
36 listings starting at $2,850
Used Nissan 300ZX
122 listings starting at $3,995
Used Toyota Supra
62 listings
Used Chevrolet Corvette
168 Great Deals out of 17,511 listings starting at $3,000
Used Chevrolet Camaro
438 Great Deals out of 31,440 listings starting at $1,450
Used Nissan 350Z
40 Great Deals out of 1,179 listings starting at $2,900
Used BMW M3
42 Great Deals out of 2,092 listings starting at $5,495
Used Mitsubishi Lancer
57 Great Deals out of 5,322 listings starting at $2,450
Used BMW 3 Series
1,043 Great Deals out of 32,738 listings starting at $1,200
Used Mitsubishi Eclipse Spyder
22 Great Deals out of 507 listings starting at $2,490
Used Mazda RX-7
57 listings
Used Honda S2000
10 Great Deals out of 419 listings starting at $7,042

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.