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tpresnell
Bone Stock
Posts:14
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| 07/26/2007 1:24 PM |
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| What would cause my truck to constantly idle at around 1500rpm? Every once in a while the check engine light comes on but only briefly. |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 07/28/2007 1:07 PM |
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Can you tell us what the yr/make/model of your truck is? Also, the size of the engine, the number of miles, etc. would be helpful.
Rick |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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tpresnell
Bone Stock
Posts:14
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| 07/30/2007 9:11 AM |
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| It is a 95 chevy 1500 with a 350 about 140k miles |
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SnoMan
Lift & Lockers
Posts:943
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| 07/30/2007 10:53 AM |
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| Check gasket under TBI assembly between it and intake manifold. I had a similar problem on my 89 several years ago and it proved to be a bad gasket. |
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Visit the SnoMan at
www.thesnoman.com |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 07/30/2007 3:29 PM |
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| I was about to suggest a vacuum leak as well. I'll bet Snoman is right. |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
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'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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tpresnell
Bone Stock
Posts:14
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| 07/31/2007 7:26 AM |
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| What is involved in changing that gasket? Sounds like that could be a nasty repair. |
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SnoMan
Lift & Lockers
Posts:943
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| 07/31/2007 10:29 AM |
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quote:
Originally posted by tpresnell
What is involved in changing that gasket? Sounds like that could be a nasty repair.
Nothing to it. Simply removed TBI unit from intake. There is about 4 bolts holding it on and a few lines to disconnect and a few electrical connector too if you want to completely remove it from vehicle. There is a very thick gasket under it that is prone to fail with age. |
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Visit the SnoMan at
www.thesnoman.com |
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macabees34
Bone Stock
Posts:26
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| 08/01/2007 10:22 AM |
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| Also check those pesky plastic vaccuum lines coming off the TBI. I've had them crack or break and cause that too. |
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oh ya!!!! From the macster!!! |
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webby4x4
Forum Admin, Magazine Editor
Rock Star
Posts:2375
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| 08/03/2007 10:03 AM |
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yup - changing that gasket is a piece of cake.
Be sure to stuff some rags into the intake manifold so that junk doesn't fall inside there when you're working on it. Also, take a putty knife and clean any remenant gasket material off of the TBI unit and/or the manifold.
You should be able to do this in well under an hour, even if you've never done it before. |
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Rick Webster
Editor, 4X4REVIEW.COM - A Tork Media, Inc. Publication
- - - - - - - - - - - - - - - - - - - - -
'74 FJ40 Land Cruiser
"Measure once, cut twice" |
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