Sort of OT - short easy quiz P0171 & P0174
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From: ED on 23 Jan 2010 15:40 "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message news:hjdto4$7q9$1(a)news.eternal-september.org... > > "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message > news:hjddqm$ldl$1(a)news.eternal-september.org... >> So, Ray, what was the cause of the Lean Condition? >> >> Last we talked, the discussion was on the gaskets/washers for the plugs, >> but since the plugs were replaced at 60k, and there are now 105k miles, >> I'm back to a vacuum leak. Without the actual problem in front of me, >> it's difficult to give a diagnosis without the means to check as I go. >> > I was trying to steer you towards a vacuum leak as the cause of the lean > condition. I said you were warm when you mentioned the intake manifold, > which is made of plastic because the cause was a leaking intake manifold > gasket, which happens to be a common problem in this engine. > > Leaking intake manifold gaskets seem to be a common condition in engines > with platic intake manifolds. > -- > > Ray O Seems like the first reply to this thread deserves at least a honorary mention..... Due to time constraints a more elaborate answer was not written.
From: Jeff Strickland on 23 Jan 2010 16:38 Cool. I got the Remote Diagnosis right on the first guess. Well, my first guess what the manifold was broken, and you said that it was not. But getting that close would have (in all liklihood) exposed, at least to me, the gasket. I had the vac leak as the cause of the lean condition, what I didn't get was the cause of the leak. I listed several sources of a vac leak, one of them a manifold problem. I give myself a passing grade. "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message news:hjdto4$7q9$1(a)news.eternal-september.org... > > "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message > news:hjddqm$ldl$1(a)news.eternal-september.org... >> So, Ray, what was the cause of the Lean Condition? >> >> Last we talked, the discussion was on the gaskets/washers for the plugs, >> but since the plugs were replaced at 60k, and there are now 105k miles, >> I'm back to a vacuum leak. Without the actual problem in front of me, >> it's difficult to give a diagnosis without the means to check as I go. >> > I was trying to steer you towards a vacuum leak as the cause of the lean > condition. I said you were warm when you mentioned the intake manifold, > which is made of plastic because the cause was a leaking intake manifold > gasket, which happens to be a common problem in this engine. > > Leaking intake manifold gaskets seem to be a common condition in engines > with platic intake manifolds. > -- > > Ray O > (correct punctuation to reply) >> >> >> >> >> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message >> news:hj2hlm$bhc$1(a)news.eternal-september.org... >>>A friend recently contacted me to ask about a check engine light on their >>>2000 Windstar with 105,000 miles and to ask why the engine idles poorly >>>and acts like it is going to stall unless the transmission is in neutral >>>and the driver blips the throttle. Service history - replaced fuel pump >>>3 years ago for a no-start condition; replaced spark plugs at 60 K miles >>>with cheap aftermarket spark plugs; oil changes once or twice a year at >>>5,000 mile intervals; uses about 1 quart of oil per 1,000 miles, often >>>run 2 or 3 quarts low on oil because oil gets checked >>> >>> I plugged in my handy dandy OBD II scanner and found P0171 - system too >>> lean Bank 1 and P0174 - system too lean Bank 2. I know the cause, and >>> for this exercise, I ask that the pros like aaracuda and claire@... NOT >>> respond with the correct answer because I'm curious to see what the >>> shade tree folks here come up with. Of course, the pros are welcome to >>> respond with an explanation why a particular answer is correct or >>> incorrect, IOW, serve as a teacher and not as a student. >>> >>> Here is the quiz part: What is the likely cause of P0171 and P0174? >>> Like school quizzes, respondents have to explain why their answer is a >>> likely cause. >>> >>> -- >>> >>> Ray O >>> (correct punctuation to reply) >>> >> >> > >
From: Ray O on 24 Jan 2010 00:23 "ED" <xxagon(a)hotmail.com> wrote in message news:hjfms1$6ii$1(a)news.eternal-september.org... > > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message > news:hjdto4$7q9$1(a)news.eternal-september.org... >> >> "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message >> news:hjddqm$ldl$1(a)news.eternal-september.org... >>> So, Ray, what was the cause of the Lean Condition? >>> >>> Last we talked, the discussion was on the gaskets/washers for the plugs, >>> but since the plugs were replaced at 60k, and there are now 105k miles, >>> I'm back to a vacuum leak. Without the actual problem in front of me, >>> it's difficult to give a diagnosis without the means to check as I go. >>> >> I was trying to steer you towards a vacuum leak as the cause of the lean >> condition. I said you were warm when you mentioned the intake manifold, >> which is made of plastic because the cause was a leaking intake manifold >> gasket, which happens to be a common problem in this engine. >> >> Leaking intake manifold gaskets seem to be a common condition in engines >> with platic intake manifolds. >> -- >> >> Ray O > > Seems like the first reply to this thread deserves at least a honorary > mention..... Yes it does, and I apologize. I deleted the first response by accident and couldn't remember what the post said. > Due to time constraints a more elaborate answer was not written. -- Ray O (correct punctuation to reply)
From: Ray O on 24 Jan 2010 00:31 "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message news:hjfq92$611$1(a)news.eternal-september.org... > Cool. I got the Remote Diagnosis right on the first guess. > > Well, my first guess what the manifold was broken, and you said that it > was not. But getting that close would have (in all liklihood) exposed, at > least to me, the gasket. I had the vac leak as the cause of the lean > condition, what I didn't get was the cause of the leak. I listed several > sources of a vac leak, one of them a manifold problem. > > I give myself a passing grade. I'd give you a C+ or a B- for identifying a vacuum leak as the cause of the lean condition, a higher grade would come from identifying the cause of the lean condition with fewer low likelihood possible causes. -- Ray O (correct punctuation to reply) > > > > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message > news:hjdto4$7q9$1(a)news.eternal-september.org... >> >> "Jeff Strickland" <crwlrjeff(a)yahoo.com> wrote in message >> news:hjddqm$ldl$1(a)news.eternal-september.org... >>> So, Ray, what was the cause of the Lean Condition? >>> >>> Last we talked, the discussion was on the gaskets/washers for the plugs, >>> but since the plugs were replaced at 60k, and there are now 105k miles, >>> I'm back to a vacuum leak. Without the actual problem in front of me, >>> it's difficult to give a diagnosis without the means to check as I go. >>> >> I was trying to steer you towards a vacuum leak as the cause of the lean >> condition. I said you were warm when you mentioned the intake manifold, >> which is made of plastic because the cause was a leaking intake manifold >> gasket, which happens to be a common problem in this engine. >> >> Leaking intake manifold gaskets seem to be a common condition in engines >> with platic intake manifolds. >> -- >> >> Ray O >> (correct punctuation to reply) >>> >>> >>> >>> >>> "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in message >>> news:hj2hlm$bhc$1(a)news.eternal-september.org... >>>>A friend recently contacted me to ask about a check engine light on >>>>their 2000 Windstar with 105,000 miles and to ask why the engine idles >>>>poorly and acts like it is going to stall unless the transmission is in >>>>neutral and the driver blips the throttle. Service history - replaced >>>>fuel pump 3 years ago for a no-start condition; replaced spark plugs at >>>>60 K miles with cheap aftermarket spark plugs; oil changes once or twice >>>>a year at 5,000 mile intervals; uses about 1 quart of oil per 1,000 >>>>miles, often run 2 or 3 quarts low on oil because oil gets checked >>>> >>>> I plugged in my handy dandy OBD II scanner and found P0171 - system too >>>> lean Bank 1 and P0174 - system too lean Bank 2. I know the cause, and >>>> for this exercise, I ask that the pros like aaracuda and claire@... NOT >>>> respond with the correct answer because I'm curious to see what the >>>> shade tree folks here come up with. Of course, the pros are welcome to >>>> respond with an explanation why a particular answer is correct or >>>> incorrect, IOW, serve as a teacher and not as a student. >>>> >>>> Here is the quiz part: What is the likely cause of P0171 and P0174? >>>> Like school quizzes, respondents have to explain why their answer is a >>>> likely cause. >>>> >>>> -- >>>> >>>> Ray O >>>> (correct punctuation to reply) >>>> >>> >>> >> >> > >
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