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Highway Blues!

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Joined: 15 Jun 2019
Posts: 1
Location: Islamabad, Pakistan

PostPosted: Sat Jun 15, 2019 21:10    Post subject: Highway Blues! Reply with quote

Hi Everyone,

1st post here. So car in question : LC100 2003 amazon with the 1HDfte. 115k miles

Its been moving around town most of the time,(this issue came up once earlier though it didnt cross my mind much as it happened on a shorter trip). Now however had a long trip on the highway and encountered the following issues which i need some help with:

1) Cruising at approx 70mph going over a few hills the check engine light would come on, car would loose power and not accelerate.
This accompanied with billowing black smoke out the exhaust. On the flats it would not go above 60 mph with accelerator all the way down.
Interestingly however, the cruise control stick allowed for speed increase /decrease as per normal and was able to take it to 70 mph plus using the cruise stick.
Would shut the car down , and the error would clear up, only to return again after 15-20 odd minutes.
On the flats , the check engine light remained off though smoke did come back in scary looking clouds whenever i gave it some push and went over 70 - 75 mph. However as soon as the steep ascents arrived, so did the check engine light with an instant retard in power. On closer observation it seemed like the engine did not like hitting 2600 rpm (redline at 4K) on a constant basis.
Nursed it home , and since them its been driving like a champ in town. Pulled the code on techstream(attaching the screenshot)
Error code is 58(2)
Seems like a SCV related error. Read on the forum that cleaning the MAF might help, did the same though havent had a chance to take it for a long run again (and am kinda weary of doing that without sorting the issue)

The forum isnt allowing me to post pictures here just yet, But techstream error reports the error at 2664 rpm, 72mph and a 23psi pressure, intake temp 56 degrees Celsius, coolant at 79 degreesIDL sign On, ACCL slose sw ON and accl open sw off. This happened when cruise control wasnt on.

Does any1 have any further insight. Do these SCVs go bad? The vehicle has around 115K miles on it

One thing also to not is that the intake air temp mostly is 20-25 degree Celsius higher than ambient temp, is that normal?
Have some oil leaking from the turbo to intercooler , but i dont think that should be causing higher temps....
Did an EGR delete a few days before this trip

2) The car starts vibrating at 60mph plus, seems like coming from the rear, and gives MAJOR vibrations taking left turns when the right tire is loaded. Have changes over the wheel and its jst the same if not worst, so not the rim/tire. What could i be looking at here. Might be getting it looked at tomorrow but would like some thoughts beforehand maybe.

Cheers ! (Sorry for the long post)
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PostPosted: Sat Jun 15, 2019 21:10    Post subject: Google Ads keep this community free to join!

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