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Toyota Highlander shifts hard and jerks / rocks


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TabMan
Novice

Oct 31, 2017, 8:31 AM

Post #1 of 8 (251 views)
Toyota Highlander shifts hard and jerks / rocks Sign In

2001
Toyota
Highlander Limited
v6 3.0 1m-fze
233k miles

So I changed the following on my vehicle. A lot this due to the fact the car was not maintained very well prior to me and I bought it earlier this year.

Timing Belt, Water Pump, Pulleys, Idle bearing, Belt Tensioner, Spark Plugs, Valve Cover Gaskets, Cam Seals, Crank seal, Knock Sensors, Knock Sensor Wire Harness, Coolant Hoses, Intake Gaskets, Throttle Body Gasket, Air Filter, PCV Valve, Fuel Injectors Coolant, Oil.

When I rehooked the vacuum hoses I made sure to follow the diagram on the hood I had handy. I have gone through and triple checked and can't seem to find anything wrong there.

The car starts normal when hot, when cold is have a slight hesitation that doesn't seem apparent then accelerating. Though when I change to reverse sometimes it delays to change gear and the truck vibrates/rocks. Other times (even when cold) it will go right into reverse.

On a test drive I find a delayed slightly hard shift into one, then a hard shift into 3rd and a shake / jerk into 4th where the shift is delayed and the truck jerks/rocks.

What I feel to be honest is a vacuum or a gasket leak but I'm not sure. I changed some of the tranny fluid by simply draining and fill. Fluid was greyish pink, no shaving on the drain pan bolt.

Any ideas I will welcome with open arms. I do have a vacuum pressure gauge on the way. I also plan to use a multimeter on the Throttle Position sensor to check that. But I'm really scratching my head here.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Oct 31, 2017, 8:44 AM

Post #2 of 8 (242 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

Any trouble codes stored? If so, what are the numbers.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


TabMan
Novice

Oct 31, 2017, 8:47 AM

Post #3 of 8 (238 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

I'll try to do a scan today and see if Torque returns anything. I have techstream but it has been crashing on health check. I will try that too.

No CEL or anything in dash yet.


TabMan
Novice

Oct 31, 2017, 3:35 PM

Post #4 of 8 (213 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

Ran scans today, nothing comes up for DTC's.

Also to note, when I press the accelerator gently when cold, there will be a delay/hesitation and jump of the engine. It's less apparent when the engine is hot. Sometimes with the delay/hesitation there will be a slight loud pop like bubble gum.

Could it be I messed up the one of the 2 intake gaskets or don't have a proper sealed.

Here is a video I took in attempt to capture it.

https://youtu.be/p3Iq7mRT6P8


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Nov 1, 2017, 10:25 AM

Post #5 of 8 (178 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

What is the long and short term fuel trims at idle and cruising? If you do a wide open throttle( WOT) run, do the O2 go rich and stay there as long as it is WOT?

MAF sensor elements dirty?





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 1, 2017, 10:45 AM

Post #6 of 8 (171 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

If you think this is not transmission related we can move it out of this category DS.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



TabMan
Novice

Nov 2, 2017, 8:38 AM

Post #7 of 8 (144 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

I think that's a good idea, it's not tranny from my testing so far.


TabMan
Novice

Nov 2, 2017, 9:34 AM

Post #8 of 8 (142 views)
Re: Toyota Highlander shifts hard and jerks / rocks Sign In

O2 tests passed and seem to be stable

idle trims: Bank 1 Short 2.34% at 2500 rpm .78% (I would need to test while driving too)

Bank 2 Short - 3.12% at 2500 rpm I did not check

Bank 2 Long -16.41% at 2500 rpm -7.03%

I noticed that when testing to TPS cable from ECM I find the 5.15 volts at key on and noticed I was not getting a ground response. So it sounds like I have a bad ground there.






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