Transmission and acceleration

Tiny
JOEY MAHARAJ
  • MEMBER
  • 2001 MITSUBISHI LANCER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 60,000 MILES
Good day, mechanics, cs3 Lancer, 4g15 sohc and CVT transmission. Vehicle had 4g18 engine and changed it to 4g15, did not change harness. Check light came on. Driving at for example 2,000 rpm's as I let go of the accelerator the vehicle would hold back at the same speed and if I keep accelerating I only reach about 80 km and would not go further. Although I'm mashing the accelerator. I stopped and take of the negative terminal of the battery, wait 10 seconds and put it back on. No problems so far after I drove it. What is the cause for this? Because I recently serviced the throttle body and air intake manifold.
Do you
have the same problem?
Yes
No
Friday, January 31st, 2020 AT 11:23 AM

10 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

Have you checked for diagnostic trouble codes? When you changed the engine and reused the wiring harness, were there differences? If you haven't checked for codes, I would recommend it. Here is a quick video showing how it is done:

https://youtu.be/YV3TRZwer8k

I realize not everyone owns a scanner. However, most parts stores will do it for free, so try this and let me know the results.

Joe

Was this
answer
helpful?
Yes
No
Friday, January 31st, 2020 AT 5:55 PM
Tiny
JOEY MAHARAJ
  • MEMBER
  • 12 POSTS
No, I don't have a scanner and parts stores don't do that here. I'm from Trinidad, so any knowledgeable answer would be helpful. I was thinking about the spark plugs, last I changed them was in August 2018.
Was this
answer
helpful?
Yes
No
Saturday, February 1st, 2020 AT 1:50 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
To be sure lets do a CAN scan which is the future of automotive repair you can get a CAN scanner from Amazon for about $50.00.
Was this
answer
helpful?
Yes
No
Saturday, February 1st, 2020 AT 1:51 PM
Tiny
JOEY MAHARAJ
  • MEMBER
  • 12 POSTS
Okay then, I will take in consideration of buying a scanner, but since I reset the computer. I haven't have a problem, running as normal as it should.
Was this
answer
helpful?
Yes
No
Sunday, February 2nd, 2020 AT 10:32 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

If it's running good and the light hasn't come back on, it may be fine. However, I agree with Ken. Let us know if there is anything other we can help with.

Joe
Was this
answer
helpful?
Yes
No
Sunday, February 2nd, 2020 AT 6:51 PM
Tiny
JOEY MAHARAJ
  • MEMBER
  • 12 POSTS
Okay cool, thanks.
Was this
answer
helpful?
Yes
No
Tuesday, February 4th, 2020 AT 3:40 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,554 POSTS
Here is a video to show you how:

https://youtu.be/InIlnsjOVFA

It sounds like the car is going into limp mode. here is a guide:

https://www.2carpros.com/articles/reduced-power-limp-mode

Please run down this guide and report back.
Was this
answer
helpful?
Yes
No
+1
Tuesday, February 4th, 2020 AT 10:55 AM
Tiny
JOEY MAHARAJ
  • MEMBER
  • 12 POSTS
My transmission may need a servicing then, as it has an oil filter inside. Last I serviced it was about 4 years ago.
Was this
answer
helpful?
Yes
No
Saturday, February 22nd, 2020 AT 3:49 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,014 POSTS
Hi,

Has the problem returned? If it has, by any chance, were you able to get your hands on a scanner?

Joe
Was this
answer
helpful?
Yes
No
Saturday, February 22nd, 2020 AT 5:26 PM
Tiny
JOEY MAHARAJ
  • MEMBER
  • 12 POSTS
No the problem hasn't returned. No not yet.
Was this
answer
helpful?
Yes
No
Tuesday, March 17th, 2020 AT 6:48 AM

Please login or register to post a reply.

Sponsored links