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 Occasional "Check Engine" light and hard start.
#1076774
02/13/15 02:36 PM
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Joined: May 2006
Posts: 524
OP
Rock Warrior
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The light seems to be coming on more frequently over a month or two. It's been hard to start a couple of times when cold.
From looking at the owners' manual and shop manual I'm guessing EGR valve. The manual says to clean it in appropriate solvent. Does this mean carb cleaner? Any tips?
89 3L V6 5spd SWB, Aisin Manual Hubs, 2 (suspension) seater Raider in Wheeler, OR
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Re: Occasional "Check Engine" light and hard start.
[Re: Bernoulli]
#1076775
02/13/15 03:57 PM
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Joined: Aug 2009
Posts: 989
Rock Warrior
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Look at the MASS and plug ..How does the truck idle when lights on ?..Open EGR at idle will make a (most) vehicle idle bad ...
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Re: Occasional "Check Engine" light and hard start.
[Re: Bernoulli]
#1076776
02/13/15 05:33 PM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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Pulled a code?
I've always found I need manual cleaning as well as solvent (brake fluid) to clean EGR properly. Wire brush, scrapper etc.
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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Re: Occasional "Check Engine" light and hard start.
[Re: Bernoulli]
#1076777
02/14/15 12:47 AM
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Joined: Aug 2009
Posts: 989
Rock Warrior
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Is what we need to do is set up info on what sets the CEL light and what does 'not' set the CEL...
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Re: Occasional "Check Engine" light and hard start.
[Re: haztoys]
#1076778
02/14/15 04:16 AM
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Joined: Dec 2007
Posts: 2,348
Body Damage is Cool
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Is what we need to do is set up info on what sets the CEL light and what does 'not' set the CEL... Yes!
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Re: Occasional "Check Engine" light and hard start.
[Re: Mudraider]
#1076779
02/14/15 04:48 AM
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Joined: May 2006
Posts: 524
OP
Rock Warrior
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The owners' manual says the CEL reflects only an emissions problem. I'll check the shop manual again - couldn't find CEL on a fast go through.
89 3L V6 5spd SWB, Aisin Manual Hubs, 2 (suspension) seater Raider in Wheeler, OR
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Re: Occasional "Check Engine" light and hard start.
[Re: Bernoulli]
#1076780
02/14/15 05:46 AM
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Joined: Mar 2005
Posts: 1,006
Body Damage is Cool
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The owners' manual says the CEL reflects only an emissions problem. Yes, OBDI & II are there for emissions, but also show improper air/fuel ratio. O2 sensor is to keep CAT healthy and emissions low. Fuel trims keep mixture to 14.7:1. The code sets for an extreme condition that sensors can't compensate for to keep CAT operating.
92 Montero LS 3.0L V6 Auto, Stock, Original owner, 185,800K miles
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