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Maintenance & Repair Maintenance & Repair - Archived Discussions Q45 Troubles 
135 messages, Last post on Jul 28, 2001 at 10:10 AM
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AF burning Smells check for hose leaks under plenum, common on 9 year old Q which haven't had all hoses changed. The fan speed is controlled by an electronic module, fail safe is to run wide open...the fan speed module will need to be replaced ...behind glove box to the left of fan motor vertical quasi rectangular unit mounted in cooling unit. |
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| Thanks for the info, q45man. Any idea what I may be looking at in terms of parts and labor to have the fan speed module replaced? Is it worth doing myself in your opinion? Thanks. | |
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| I have a 91 Q45 w/138K. Great car. Runs like a dream. I had the timing chain replaced at 90K at my choice. Not cheap. I have two problems I have put off repairing for over a year, and would like some iput. 1. The speedo registers incorrectly intermittently. You can be cruising at 80 mph and all of a sudden it will register 120 mph and then go back to 80. Doesn't appear to alter the mileage. Any suggestions. 2. My display for the climate control has stopped working, all functions seem to work, you just can't read the display. Have checked fuses and all seem fine. Are there other fuses to check or will the whole unit have to be replaced?. Any tips on used parts, I am in Tennessee and used parts are hard to come by. | |
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Hi Fellow Q45 suffers. I posted a problem with my fuel pump making a high pitch noise on the first listed posting sight. The title of the posting is "Fuel Pump Noise". If any of you are having a noisy fuel pump problem like mine, please offer suggestions to fix problem... other than buying a different car! I bought mine as an "off Lease" "Certified Pre-Owned" Infiniti 1998; its a 1995 sedan. It had 40K miles and all the service records so I felt like I was buying a properly maintained car. I have 114K miles on it now and I just replaced both the king pins due to a squeeking sound. $400 fixed the problem. I hope this is not like a government project that requires continuous injection of money to keep it running. Please let me know if you are getting a funny noise from your trunk area after a long trip and you are sitting still listening to your car run. I'm getting a high pitch whine. Thanks. I hope this |
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| I bought a '94 Q45 with 86k recently. The first owners provided all the maintenance records and took great care of the car. It runs great, but I've had a screwy electrical problem with the DC changer. There seems to be an electrical short - while driving, the sound cuts in and out and at times complete off. The next bump, and wall! - sound. The strange thing is that when I brake, sound comes from both sides, when I let off the brake, I get only right side sound. When I take off I lose all sound momentarily, then it picks up again. Any ideas? | |
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The pump is a 3 speed motor which is supplied a varible voltage [the motor ground runs through what amounts to a engine computer transistorized varible resistor]. Idle speed ,cruise speed, and WOT and 3 minute very cold warm up speed. As fine dirt from dirty gasoline wears the 8 brushes the current increases as the pump slows down changing the intensity and pitch of the unit, a frying sound listening in the trunk is a sign of extreme stress caused by not changing the fuel filter every 20,000 miles. Don't delay changing the pump every 70k or so as waiting too long will leave you stranded and burn out the speed controller [another $500]. Whenever the pump is changed make sure the fuel level is 1/4 so you can see if dirt has accumulated inside tank, which must be removed or you will just trash a new pump quickly. Owners should always keep a 1/4 tank minimum to cool the fuel and pump plus this disperses the dirt so it doesn't constantly assault the pump. We get lots of 90-96Q flat bedded in with failed pumps because owners don't heed our warning hoping to squeeze a few more miles instead of spending $500 they end up with 2 days lost, a $100 tow bill and $1,000 in repairs. Two owners last year were so ignorant that they [to save money by towing the car in themselves] with rear wheels on the ground - blowing the transmission so they got a $4500 bill instead. http://clubs.yahoo.com/clubs/infinitiownersclub |
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I've recently purchased a 91 Q45, with 61k miles. By all accounts it has been very well maintained with all the regular service, oil changes, blah blah blah backed up by records. My question is, especially after reading about how it doesn't take a heck of a lot to quickly find yourself with an expensive problem, whether I might do well to spend about $1,200 on a used car warranty good for 3 years/40k miles. You can look at in different ways I suppose...it has been recommended by many that if the chain guides haven't been replaced (they haven't) that they should be. If not, they can break, leading to bent/broken valves, and a resultant multi-thousand dollar engine rebuild. That chain guide job costs about $1600. For less, I could buy the warranty and if the worst happens, the repair would be covered by the warranty. Same goes for any potential transmission problems (not that these early Q's have any transmission problems or anything...),injector problems and any other major system problems. Thoughts? |
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I think it depends a great deal on the "exclusions" of this extended warranty. As you probably know, these are not really "warranties"...they are insurance policies, much like health insurance. The insurance company is betting that you won't make a claim and you are hoping that you'll get a fatal disease and get your money's worth (lol). ! But seriously, you MUST read carefully about the "exclusions", as this is the REAL value of your policy. Not all warranty policies are the same, and they can vary considerably. Also, it would be good to know who the backer of the warranty really is, and if they are a well-rated company or if they operate out of a tent. |
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