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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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I called my friend who owns Dependable Tire and Brake here in San Rafael California, a really good front end, suspension and tire shop that does a lot of work for local dealers, racers, exotic cars, etc., and he does not work on this suspension. He refers everyone to the dealer. This leads me to believe that independent shops, even the best, aren't interested in working on this system. You could go to the delear for a diagnosis and an estimate and then take it from there...maybe going online or calling around your area for alternatives. It would be good to know exactly what is going wrong first, though. The less info you have, the less anyone can tell you in return, right? So it might be worth the $100 or so to get a good diagnosis. But I'd insist that the dealer report to you IN DETAIL. Not just "yep, it's broke!" |
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Try going to this forum:
http://clubs.yahoo.com/clubs/infinitiownersclub There is a person with the screen name "texasoil", who has extensive experience with the active suspensions. |
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I have a 1994 Q and it starts to give me the following problem. In parking gear, the idling rpm speed is around 500 rmp, also there is a hissing sound . When shift to drive the rpm dropped and the engine dies. Any similar experience and any idea what might be happening here? Thanks. Christine |
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| Sounds like a vacuum leak. Try running the engine in Park with the hood up and pinpointing the source of the hissing. It's probably a split vacuum hose. | |
| I am trying it. Try to avoid going to the dealer if I can. | |
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Why do people who purchase what were once expensive but are still complicated automobiles avoid the dealers where the most competent technicans usually work, where the spare parts are in inventory, and the resolution of problems is usually faster. To save $10 to $15 an hour??? or because the dealers tell them the awful truth that their cars need to be maintained and they have to spend money. It amazes me that people don't know that old lux cars need $1,500-$3,000 per year [each and every year] for maintenance. Much of our work [15-25%%] on older Q is correcting problems caused by shade tree mechanics who don't have a clue as to how the complex system work! Some of these people use cheapo non factory rebuilt parts and try to make things work with tape and bailing wire. You don't want to know how many cars get towed in with the trunk full of engine/transmission parts from some generic shop which got in over its head - begging us to bail them out. T3 Automotive LTD .. SE largest independent repairer of Lexus and Infiniti. |
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| 1994 Q45 with 99000 miles. Owned for 9 months. I have had struts replaced, new tires, idler pulleys replaced (with belts), transmission leak fixed, etc... I fully expect routine maintenance and upkeep for a car of this caliber. However, this ones got me stumped... The car ran perfect one day and then the next idles very rough and has a loss of power. Nearest Infiniti dealer is 120 miles so I did some investigation with the onboard diagnostic computer (lots of fun getting to that box!) Codes 51 (fuel injector circuit) and 34 (engine knock circuit). Local mechanic cannot diagnose but suggested running fuel injector cleaner through the system. Have only ran about 1/3 of a tank with the injector cleaner and have some (minor) improvement. Still pretty bad though. Is this a bad injector or fuel filter or pump or ???? What about these places that advertise a "fuel system flush"? Thanks for any input and what is anyone's luck with a Nissan dealer - can they work on Infiniti's? | |
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nteresting article on the new Q not having as much power as Infiniti advertised. Car and Driver also noted a similar problem with the new Q45. Is Infiniti doing anything to address this?
Interesting article on the lack of advertised power in the new Q: |
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So I pass this great looking Champagne 1990 Q45 for a few weeks, see a "for sale" sign go up, and now I'm a (somewhat) proud owner. I've driven Mercedes, BMW and Jag's for years, and had very few problems (I am a stickler for frequent preventative maintenance). This thing drives better than any SDL Mercedes I've owned... and pretty close to past 740 BMW's. So... here's my situation: I've had the car two months, and now the brakes fade to (literally) nothing. Right from the get-go. You can't even pump them to "hard" with the engine off and parked. No leaks, plenty of fluid. It FEELS like the break booster failed, but I would think that there would still be brakes, just no power assist. The "brake shoes" indicator is on on the dash, has been since I bought it. The AS block does have a small leak (is there a rebuild kit I should know about? $1-2k seems like quite an investment for that feature... maybe not). Is there a work-around for that? What's the best self-test to diagnose this situation, prior to turning it over to an Infiniti mechanic? Then, about two weeks ago, a sudden ticking has shown up that appears to be coming from the left (from the rear) cylinder bank. It clatters like hell as the revs increase, then quiets down a bit at 3k PM. It's intermittent at idle and slightly above (will completely disappear about 60% of the time at idle). It also sometimes disappears after driving a bit... once it's completely warm. But cold, it sounds bad... I bought this car to take clients out to lunch, etc... it's roomy and sexy, and very nice leather, sound system, etc... It even has a "wood dash and center pod" kit installed... so it really has the look and feel of a great Euro sedan. I want to keep it (though it has nearly 150k on it, it's been very well maintained). But I don't want to sink my life savings into it. Any ideas are welcome. I'm a pretty good mechanic, but I'm not confident I want to wrestle with all I see under that hood. Also, if you're a local mechanic, please feel free to contact me if you feel you can do the fixes. I'll gladly pay to have a "personal mechanic". Thanks! |
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