Coolant leak.
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Just replaced intake manifold due to a bad manifold runner solenoid, then did a test drive with a couple full throttle pulls. Now it is leaking coolant from the right rear of engine (pass side). So far I can't locate it and I didn't think I disconnected any coolant lines.
2008 IS250 AWD 130,000 mi
2008 IS250 AWD 130,000 mi
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Ok, I found the hose under the front of the TB, and the clamp was not even in position...easy fix. It stopped leaking, but now there is a pulsing sound coming from under the TB, like a distant helicopter - is that air? If so, how do I bleed the cooling system?
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Thanks for all the help. It doesn't run hot, but I bled the system anyway. Over more than an hour, bubbles came out. Unrelated to this, the dealer had the engine out a year ago for the ZLA recall, where they replace rings and seals due to oil consumption. I'm thinking they did not bleed it then.
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By any chance did you experience this from the links below?
https://www.clublexus.com/forums/is-...l#post10265832
https://www.clublexus.com/forums/is-...-solution.html
https://www.clublexus.com/forums/is-...-bank-1-a.html
https://www.clublexus.com/forums/is-...l#post10265832
https://www.clublexus.com/forums/is-...-solution.html
https://www.clublexus.com/forums/is-...-bank-1-a.html
Last edited by MikeFig82; 10-23-18 at 03:43 PM.
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Ouch, hindsight is 20/20. Originally, my mechanic at work said it was the intake manifold runner solenoid. I went to my trusted parts store, and they searched and searched, but could not find the solenoid to order. They said I can only buy it as a whole with the intake. They got a Toyota part number for the intake and I bought it on line at a Lexus parts distributor. Now that it is back together, it runs fine with all the power it originally had. For what it's worth, I just went outside and tried removing the two phillips screws form the solenoid of the old intake, and they won't budge. But I am thinking it is the same as what happened in the links you sent, where the nut worked itself loose.
I paid $597 for the aluminum intake, genuine Toyota parts. Two new gaskets for the bottom of the intake, re-used the upper orange ones.
I paid $597 for the aluminum intake, genuine Toyota parts. Two new gaskets for the bottom of the intake, re-used the upper orange ones.
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Please note that any 'cross head' screws on Japanese vehicles are going to actually be JIS type screws and not Philips or Pozi Drive and although a Philips screwdriver will appear to fit when high torque is applied then the misfit will chew the screw head.
google JIS and be enlightened!
I actually purchased ( from Japan) genuine JIS size 1 and 2 screwdrivers for working on the Lexus.
Example http://ruggedroads.co.uk/JIS-Screwdr...a-P1-P2-and-P3
paul m
google JIS and be enlightened!
I actually purchased ( from Japan) genuine JIS size 1 and 2 screwdrivers for working on the Lexus.
Example http://ruggedroads.co.uk/JIS-Screwdr...a-P1-P2-and-P3
paul m
Last edited by Texas149; 10-24-18 at 01:54 PM.
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Yep, I was a little baffled by the poor fit of the cross tip, but got it off with vice grips after soaking with penetrating oil. Didn't round it out. So I got the solenoid off and there was the nut - not on the shaft! Live and learn I guess. Thanks again for all the feedback, Mike Fig and Texas149. Anybody want to buy a used intake manifold..!
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