- #37 of 106
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Re: Nissan Maxima 2000 cold start problem [div2]
by dmaljunk
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Dec 07, 2005 (12:23 pm)
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Replying to: div2 (Dec 07, 2005 10:35 am)
div2, thanks, that sounds reasonable but wouldn't it show the code in the computer and display Service Engine Soon? I read somewhere that bad MAF doesn't always display a service engine soon light and so I was quite sure that it was the MAF and replaced it myself but it did not help at all. So now I am assuming that if it's a sensor then SES light must come on? Please let me know...
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- #38 of 106
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Re: Nissan Maxima 2000 cold start problem [dmaljunk]
by div2
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Dec 07, 2005 (8:54 pm)
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Replying to: dmaljunk (Dec 07, 2005 12:23 pm)
My real area of expertise is with regards to BMWs. That said, sometimes a sensor or other component is bad and it still won't throw a code. Whatever you do, don't start "flailing"-AKA throwing parts at the problem. Instead, follow a logical procedure which evaluates the operation of each component prior to replacing it. For example, the Nissan service information should provide the resistence values of the sensor at two or more reference temperatures. Armed with that data and a DVOM a tech can easily determine if the sensor is bad.
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- #39 of 106
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Re: Nissan Maxima 2000 cold start problem [div2]
by dmaljunk
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Dec 08, 2005 (8:29 am)
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Replying to: div2 (Dec 07, 2005 8:54 pm)
div2, that is the most reasonable advise I got so far. I have Nissan's factory service manual and you are correct, there are procedures to check voltage on sensors before replacing them. If only I could get a dealer to do it before telling me that it could be a million reasons and they can't find the problem... Know any good dealer or private mechanic for Maxima in NY Metro area?
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- #40 of 106
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Re: Nissan Maxima 2000 cold start problem [dmaljunk]
by div2
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Dec 11, 2005 (7:46 pm)
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Replying to: dmaljunk (Dec 08, 2005 8:29 am)
Sorry, I don't know the decent dealers or shops in that area. Google "Nissan message boards" and see if you can find a board where you can ask about good shops in Metro NY. It's sad to say, but many dealer service shops only know how to sell parts-not accurately diagnose the problem.
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- #41 of 106
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Re: Nissan Maxima 2000 cold start problem [dmaljunk]
by sequoiasoon
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Dec 12, 2005 (8:22 am)
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Replying to: dmaljunk (Dec 08, 2005 8:29 am)
dmaljunk,
define metro Ny a little better. What town/area are you in? My dad was an instructer for all OBD2 as well as all the NYS STEP classes and ASE classes. Need an area to help get you a good mechanic.
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- #42 of 106
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Re: Nissan Maxima 2000 cold start problem [sequoiasoon]
by dmaljunk
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Dec 13, 2005 (7:40 am)
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Replying to: sequoiasoon (Dec 12, 2005 8:22 am)
sequoiasoon, thanks in advance. I am in Brooklyn, NY. Thanks
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- #43 of 106
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Re: Nissan Maxima 2000 cold start problem [div2]
by dmaljunk
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Dec 13, 2005 (7:50 am)
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Replying to: div2 (Dec 07, 2005 8:54 pm)
div2, I got the electronic tester and attempted to measure the Engine Coolant Tempreture Sensor resistence manually. I got reading on a warm engine, which seemed to fit the graph of normal readings in the manual(0.67 kOmhs at about 125F) but with the cold engine I couldn't get clear readings. I was expecting to see something like 2 kOmhs but didn't get anything at all. Some numbers came up for a second and then nothing. Is this an indication of a problem? Is it possible that the sensor works fine and gives off proper resistence when antifreeze is warm and doesn't work at all when antifreeze is cold? It sure seems that it's doing just that based in the symptoms... I am kind of ready to throw another $27 at this problem and see if that is it but I am not 100% sure.
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- #44 of 106
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Re: Nissan Maxima 2000 cold start problem [dmaljunk]
by div2
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Dec 13, 2005 (8:42 am)
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Replying to: dmaljunk (Dec 13, 2005 7:50 am)
For $27 I'd say that it's worth a try. Better than letting some doofus at the dealer replace every mega-dollar part they can unbolt...
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- #45 of 106
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Re: Nissan Maxima 2000 cold start problem [div2]
by alcan
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Dec 13, 2005 (8:55 am)
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Replying to: div2 (Dec 13, 2005 8:42 am)
Anyone with a scan tool can access datastream and get live, accurate readings of the coolant temp sensor input to the engine control computer. Would take about 5 minutes from cold startup.
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- #46 of 106
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Re: Nissan Maxima 2000 cold start problem [alcan]
by dmaljunk
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Dec 14, 2005 (7:38 am)
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Replying to: alcan (Dec 13, 2005 8:55 am)
true but dealer did already and they said they can't find anything. These bastards don't even know how to use their $6,000 Consult-II computer. They look for a code and if it's there they replace the part, if there is no code then they are not gonna spend any time looking at voltages, resistence, pressure readings and making any intelligent conclusions... I have yet to find a descent mechanic...
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