95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Rough idle for 5-10 seconds after cold start

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Old 09-29-2009 | 03:36 PM
  #21  
Superpilot's Avatar
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From: North Carolina
Does yours still do this when really cold? It was about 55 degrees this morning and it was much better than it normally is.
Old 09-29-2009 | 03:39 PM
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grrrr had the same problem starting today in the morning...

Still dont know the issue =[ should i just ask these guys? they helped me alot before

http://toyotapartszone.com
Old 09-29-2009 | 04:58 PM
  #23  
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From: Lake Arrowhead, CA
Originally Posted by Superpilot
Does yours still do this when really cold? It was about 55 degrees this morning and it was much better than it normally is.
Mine is better when it's cold outside too. It does it about 1/4 as often as when it's hot out. When it does it, it only lasts for the first 5 or 10 seconds and then it runs perfect.

I'm still missing about an inch of coolant in my overflow every week or 2. I figure it's probably a HG leak, but this may go on for a while (it already has for over a year) before it totally blows out the HG. I'm planning on putting a rebuilt (w/ OEM parts) engine in it sometime in the future anyways, so I'm just rollin' with it. Still gets me everywhere (long trips even) and it still has lots of power too, so I'm just going to keep doing regular maintenance and drive it into the dirt!
Old 09-30-2009 | 10:22 AM
  #24  
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my car only has around 50K miles on it. Should i really be considering a engine rebuild of some sort? I under stand toyota trucks are known for noises like clinkity clink clank haha
Old 09-30-2009 | 10:47 AM
  #25  
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From: Lake Arrowhead, CA
Mine doesn't make strange noises, it just shakes a little and the rpms jump between 1000 and 1400. I smelled the exhaust right after I started it up today and it smelled weird. Not really sweet, but not exactly like exhaust normally smells either. Then after about 5 seconds, it started smelling like normal exhaust again. Probably a HG, but still not sure since my compression is in spec. Now I'm just content with the "we'll see how it goes" mindset. It's running good and it still gets me from point A to point B.

JFCruiser,
I don't know if you should be considering a rebuild or not since we don't know your symptoms. The only reason I want to do a total rebuild to mine, as opposed to just changing the HGs, is because I have nearly 200K on it now and plan on driving this truck for many years to come - I'll probably never sell it. I don't want to do the HGs only to have to do another major repair soon afterwards - I would rather just make sure everything is new/rebuilt and not worry for a long time. Since yours only has 50K on it, I would just R&R the HGs (but only if that's in fact your problem - diagnose it first!!!) and be done w/ it.
Old 09-30-2009 | 11:37 AM
  #26  
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From: Asheville, NC
I would suggest a fuel leak down test both hot and cold. At higher temps Gasoline is at more of a gaseous state which would increase the leak down due to less resistance.
In other words the injectors may leak less when it is cold because the fuel is denser.
Other than that from what I am reading about the torque of the heads is if you were to re torque them you would want to loosen them fully then re-torque. With no leak down at high temps the metal expands and contracts with temperature change so this may be the issue as well. I would start with a cold pressure check of the fuel rail after a hot pressure check.
Old 09-30-2009 | 12:31 PM
  #27  
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From: Lake Arrowhead, CA
Thanks eddie, I'll try that.
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