 Help: Check engine light on, code 71 |
 Dec 19, 2012 - 7:50 PM
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Enthusiast Joined Dec 19, '12 From California Currently Offline Reputation: 0 (0%)  |
Hi, I have a '94 Celica ST automatic, with about 170,000 miles. The check engine light is on and it's code 71. I already cleaned out the EGR, but the check engine light came back on after I reset it. So I got another EGR used from Pick a Part, and the light is back on again. Could it just be it needs a new sensor?
Also, smoke comes out of the tail pipe when I give it gas, and it smells really bad. Is it unrelated to the check engine light being on? I've considered having the engine rebuilt, but I want to make sure before I spend that much money. It has good compression. I bought valve seals but the person who was going to do them said it would be best to just rebuild the engine. And the person I bought the car from said he recently rebuilt the engine. So I just don't know.. I'd appreciate any ideas on these problems. Thank you! |
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Replies
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Dec 19, 2012 - 9:04 PM
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 Enthusiast  Joined Feb 23, '12 From Warrior, AL Currently Offline Reputation: 0 (0%) |
Also on the other issue. Is the smoke blue or black, and does it smell of fuel or oil? The 7A-FE is notorious for stuck oil rings that'll let oil into the combustion chamber and will cause burn off. Not too big an issue as long as you keep oil in it. You can try doing piston soaks and running detergents through it in hopes of alleviating the problem by breaking the rings free. I was lucky and was able to break my rings free by running Marvel Mystery Oil in the crankcase, and doing a piston soak with the Marvel.
-------------------- 2001 Miata LS 5-speed
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Posts in this topic
Jules88 Help: Check engine light on, code 71 Dec 19, 2012 - 7:50 PM
Box There're 4 components within the EGR system, a... Dec 19, 2012 - 8:56 PM
Jules88 Thanks for the advice. The smoke is gray, and ther... Dec 31, 2012 - 4:29 PM Box You can give it a shot. Personally I wouldn't... Dec 31, 2012 - 7:06 PM Jules88 Alright I'm going to try that tomorrow, thanks... Jan 12, 2013 - 10:34 PM stephen_lee apply vac to the port on the egr valve(either with... Jan 12, 2013 - 11:31 PM BonzaiCelica Ok so since this is the most recent check engine c... Jul 12, 2013 - 4:51 PM richee3 There should be a TC pin in your diagnostic box. T... Jul 12, 2013 - 5:05 PM BonzaiCelica Thx but i failed before i even posted here. I conn... Jul 14, 2013 - 2:15 AM |
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