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Mar 24, 2007 | 06:06 PM

illedran

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1999 ?

Hi.I am new here.Been having some issues with my explorer and thought maybe you guys could shoot me some ideas.heres what I got

1999 explorer 4 door 5.0 awd
the problem I am having is the past days it has been idling rough not stalling ,but it seems like it wants too then the check engine light came on,so i took it to Advance for the diag. and it said running lean in bank 1 and 2.I cleaned the mass air sensor and deleted codes.In the morning it will run fine ,but as i drive and seems like it will only do it when hot outside it will start doing it again but i havent had the engine light come on again yet and i dont know if this has anything to do with it but it seems i smwll anti freeze every now and then,but not leaking anywhere.

Thanks to anyone who could help.

Tony

Last edited by illedran; Mar 24, 2007 at 06:09 PM.

Mar 24, 2007 | 09:59 PM

ReAX

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From: Central Florida

If you haven't replaced the o2 sensors your probably well overdue. They should be done between 30,000 and 60,000 miles. If it runs decent for the first 5 minutes and then gets worse, I'd suspect the o2s wether they were new or not. You probably only need to replace the one/two pre-cat sensors as the rear sensors are emissions only.

Mar 25, 2007 | 06:06 AM

1998explorer

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If you smell antifreeze but can't find a leak check the coolant level. If you are loosing antifreeze and the smell comes from the exhaust it may be a head gasket.

Mar 25, 2007 | 08:14 AM

illedran

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Im going to change the o2 and see what hapens.I dont know if the anti freeze smell was coming from exhaust.I know I smelt it up front.I will check next time it does it.

thanks for the tips guys

Mar 25, 2007 | 08:24 AM

1998explorer

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If you don't find the leak and the smell is coming from the front, check the radiator cap. If it's not getting a good seal it could be boiling over and evaporating when it gets hot.

Mar 25, 2007 | 11:36 AM

aquanaut20

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From: BC Canada

Caution. antifreeze in the exhaust can kill the O2s, make sure you dont have a leak before installing new ones

Mar 25, 2007 | 04:55 PM

illedran

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Well replaced the o2 and still have the same problem,but seen where my hose right above the water pump has small leak.The old o2 sensor i took out look like it was burning clean,any other ideas?