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Car Forum / Nissan / Nissan Maxima / April 20041991 Maxima losses power after warming up
I posted this same question on Maxima.org, but no answer yet... I'm posting this message for a family friend, so this is not my car. She has a 91 Maxima Brougham with the V6 motor. It has 69000 km (44000 mi) on it. She is experiencing power loss and rough engine vibrations after driving the car for 10 minutes after a cold start. Stopping the engine for about 10 minutes and restarting seems to correct the problem for the rest trip until the next time this is repeated. Loss of power is most noticable when climbing a hill, but has also been noted on level road driving. The local Nissan dealer recently performed a major emmision service along with a timing belt, cam seals and welsh plug change. Although the problems seemed to disappear for a couple of months, they have returned as before. Keep in mind that this car is not driven alot. I don't think the timing belt was the problem, but I assume the dealer had guidelines to follow for replacing it. I have read that the O2 sensor may be at fault, but the symptoms from those posts were slightly different. Still this may be the culprit. Any ideas? I think this is a great car and it would be a shame for her to sell it. how about the PVC valve? Have you ever changed that > I posted this same question on Maxima.org, but no answer yet... > [quoted text clipped - 18 lines] > slightly different. Still this may be the culprit. Any ideas? I think > this is a great car and it would be a shame for her to sell it. My son has a 92 Maxima SE and just recently went through a similar problem. After about three weeks and many parts and many dollars later the problem was finally resolved. All the ignition coils were changed and that seemed to get rid of the final hesitation/loss of power, BUT in the process the air flow meter, cam sensor, o2 sensor, wiring harness, new plugs, injector cleaning and some others I don't remember were also changed. The car runs great now but the point is that this can be a very hard thing to diagnose since it can be caused by different things. The timing belt should be changed around 60,000 anyway. Good luck. >I posted this same question on Maxima.org, but no answer yet... > [quoted text clipped - 19 lines] >this is a great car and it would be a shame for her to sell it. > I too had this problem. After discussing this issue with many of the nissan mechanics, the O2 sensor is the achilles heal on the 91 maxima's. I had it changed and have never experienced a problem since. I too had this problem. After discussing this issue with many of the nissan mechanics, the O2 sensor is the achilles heal on the 91 maxima's. I had it changed and have never experienced a problem since. With this problem did you ever get a check engine light? > With this problem did you ever get a check engine light? No the check engine light does not come when the problem is present. The Nissan dealer does not believe its the O2 sensor, but many others with similar symptoms have pointed to that as the culprit. The dealer is saying its the transmission! He says during a road test, the car shifted down a gear and would shift back up. They want $3000 CDN to replace with a rebuilt. >> With this problem did you ever get a check engine light? > [quoted text clipped - 4 lines] >shifted down a gear and would shift back up. They want $3000 CDN to >replace with a rebuilt. Just jumping in late here but here's another thought - There are two water temperature sensors on many maximas, one reports to the ECU and one feeds the temp gauge. Maybe the one sending to the ECU isn't working properly so the ECU doesn't realize the engine has warmed up and creates too rich of a fuel mixture. Not sure if your 91 has two temp sensors but checking it out is a LOT cheaper than swapping in a new tranny as a troubleshooting aide! Hi, I have a '95 Max (148K miles) exhibiting similar behavior. When it first starts, it runs great for about ten minutes and even after that time as long as I don't come to a stop it runs fine at a constant speed. If I do come to a stop and then accelerate (and I'm not talking "jack rabbit" either) it sputters, runs very rough and almost stalls even when I pump the gas slightly until I get to a constant speed...any speed: 40, 50, 60, 70 mph, etc., it runs fine. I haven't changed the fuel filter in 100K miles. Could that be it? Thanks for any help. Ted antalt@bellsouth.net > >> With this problem did you ever get a check engine light? > > [quoted text clipped - 11 lines] > rich of a fuel mixture. Not sure if your 91 has two temp sensors but checking > it out is a LOT cheaper than swapping in a new tranny as a troubleshooting aide! >Hi, >I have a '95 Max (148K miles) exhibiting similar behavior. When it first [quoted text clipped - 8 lines] >Ted >antalt@bellsouth.net That would be one of the first things to try - could be fuel starvation. Recommended replacement is at 30k intervals. |
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