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2009 Jeep Compass Compass RPM STUCK poor acceleration

Tiny
NICOLASSABRA
  • MEMBER
  • 2009 JEEP COMPASS
  • 2.3L
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 68,000 MILES
HELLO I am new to this forum

i have a jeep compass 2009 cvt

it has a problem when driving uphill, The car's RPM gets STUCK between 2000 rpm and 3000 rpm and the vehicle's speed is at 20 mph whenever I stop and run. The tps angle gets stuck on 14 % although i'm flooring the pedal, it increases very poorly until the engine hits 3000 rpm and the car gets its acceleration back.

i used a diagnostic scanner and scanned all the sensors and voltages from engine to transmission to abs and esp, everything seems okay

i need to know what is preventing the car from accelerating at this speed and rpm.

thank you all for your help
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Monday, March 2nd, 2015 AT 11:35 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
Has the check engine light come on? Have you checked fuel pump pressure? Have you checked to see if the catalytic converter is plugging? Are there any major vacuum leaks?
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Tuesday, March 3rd, 2015 AT 10:55 AM
Tiny
NICOLASSABRA
  • MEMBER
  • 4 POSTS
Hello

thank you for your reply.

I have no check engine light.
I scanner the with a launch scanner,
no DTC appeared.

I did a live reading for all the engine, abs and eps sensors and switches,
everything seems to be working in the right pattern, voltages are good.

I will check the fuel pump pressure and see if the catalytic converter is clogged.
I have no vacuum leaks.

I don t think I have a problem with the fuel system. Cause when the car get stuck between 2000 and 3000 rpm the throttle blade is also stuck on 14 % angle and it continues to increase very poorly with the rpm until the engine hit 3000 rpm afterwords the car accelerates normally till red line. ( We are talking uphills only) I have no problems on straight roads.

Thank you in advance
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Tuesday, March 3rd, 2015 AT 11:31 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
The transmission is partially controlled by the TPS. If there is a delay in the reaction of the TPS, the trans won't work properly. The odd thing is the problem only happens up hill.

My first guess is the TPS is faulty. However, check wiring to it and make sure there are no damaged wires that could be shorting when the vehicle is inclined. Also, check the emissions warranty for the vehicle. The TPS would be considered an emissions component. Although, the warranty may be expired, I know they are much longer than other components' warranties and they do carry a 0 deductible. It doesn't hurt to check.
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Wednesday, March 4th, 2015 AT 5:24 AM
Tiny
NICOLASSABRA
  • MEMBER
  • 4 POSTS
HELLO
thank you for your interest in my car problem.

The tps was replaced not a long time ago.

Ive checked the wires and everything seems to look okay no shorted wires.

I did an ETC TEST today on my scan tool, the motor is working properly same for the acceleration pedal.

I took off the abs eps and 4wd fuses from the fuse box to completely disable all the traction systems in the car.

And again the problem appeared as it is !

So now I know that I don't have problems in these parts of the car>

but still no solutions:s
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Friday, March 6th, 2015 AT 9:54 AM
Tiny
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If there are no damaged wires to the TPS, I would think it is bad since it is reacting the way you described. Is the new one under warranty?
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Friday, March 6th, 2015 AT 10:13 AM
Tiny
NICOLASSABRA
  • MEMBER
  • 4 POSTS
Thank you for your reply
yes the part is under warranty

why the electronic throttle body will work normaly when I am on neutral or park POSITION and get stuck when the car is under load on D POSITION?

I think it is getting an order from the pcm to stuck on 10 %?

Isn't it logical?

Thank you in advance
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Friday, March 6th, 2015 AT 11:56 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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I have to be honest, with today's cars, anything is possible. However, I feel the TPS is causing the issue and causing the transmission issues. I could be wrong, I've been wrong in the past and will again in the future, but that is where I feel the problem is coming from.
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Friday, March 6th, 2015 AT 5:10 PM

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