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Everything posted by Fairtax4me
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My god, how could you have possibly put up with this for YEARS without getting a second or third, or even fourth opinion!? Spongy brake pedal usually means there is air in the lines. Improper bleeding, or old fluid as Nipper said are the usual causes. Ploosibilitities: Someone could have replaced the fluid with the wrong type. Not all brake fluids are created equal. The master cylinder could be damaged internally. Caliper pistons could be sticking. Start with the fluid. It's cheap and easy. I like the Valvoline Synpower? synthetic stuff in the Grey bottle. It's Dot4 equivalent which has a higher boiling point so it lasts longer. Also helps firm up the pedal, even compared to brand new Dot3.
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You sure that's not just metal paste stuck all over it? Manual transmissions tend to make alot of very fine particles that somehow find a way to seemingly super glue themselves to everything in the transmission. Takes a bit of scrubbing to get them all cleaned off. That's crazy if it really got hot enough to burn itself.
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A bent frame, or severely out of spec camber. In my experience, bad bushings will allow the wheels to "walk around" under the car, when driven on grooved concrete/ steel deck bridges, but not move the whole car around as much, or no more than any other paved surface. Most of the time you just get a generally unstable feeling at higher speeds, and clunking /wobbling during acceleration or braking, or during harsh maneuvering. This is just in general. Obviously every car reacts differently to worn suspension parts. I tend to think the bushings on my 96 sedan are pretty worn out. It feels like it wants to float off the road at anything over 60, but it doesn't feel wobbly or drive any differently on cement than it does on asphalt.
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Good old fashioned aftermarket PITA. I've found that the hassle of installing some aftermarket parts is not worth the cost savings, at all. And often times the ride quality suffers. The rear bushings are about $70 a side from a dealer if you order online. Some dealers will match online pricing to get a sale, which means you can often get the same price or close to it locally. Takes all of 5 minutes to change it and you're done. The front control arm bushings can be pushed out with a C frame press or a long bolt with some proper size sockets. Or you do it the redneck way and burn them out with a torch. If you haven't done so, I recommend replacing the bushings on the steering rack with poly bushings. I got a set of Whiteline bushings on Ebay for around $35 shipped. They take maybe 30 minutes to install and make a huge difference in the feel of the steering. No noticeable difference in NVH or ride quality. And the Poly is resistant to oil contamination which is what degrades the factory rubber parts so badly. Wandering on grooved cement is usually more of an issue with tires. It's commonly known as Tram-lining. It tends to be worse with higher performance tires, but plenty of other tire types are affected by this as well. It all comes down to tread design. You can search your tire brand and model on Tirerack and read some reviews by people with the same tires to see if others have the same trouble.
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Coil sounds fine. When a coil fails you typically get no spark on one half of the engine (front or rear). You covered all of the basics. Try the Seafoam treatment. Run some through the intake by way of the idle control valve. Pour the rest in the gas tank to help clean the fuel system. You have a vacuum gauge, did you hook it up to the intake to see engine vacuum at idle?
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Glad you got it figured out. Sorry no-one chipped in, this post must have been shuffled under the rug on a busy day or something. The TPS is adjustable so that the ECU sees a certain voltage reading (around 0.5 V ) from the sensor when the throttle plate is closed. The same sensors are used on a range of years, and several different engines. Because of differences in manufacturing, the base throttle plate setting on one engine may be slightly different than another, even if it's the same type of engine. Very small changes in the position of the sensor can make a big difference in what the ECU sees, as you've found out. So the sensor needs to be adjustable to account for those minor differences from one engine to another. There are also differences in manufacturing tolerances of the sensor. No two sensors will read exactly the same. It is much cheaper to produce an adjustable component that will fit many different applications, than to make individual components for each engine. The same sensors are also used on some Suzuki vehicles. Suzuki's engine management may look for a different voltage reading at base throttle position.
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I Don't bother with "relieving fuel pressure". Take the gas cap off to let vapor pressure out of the tank, then pop the hoses off. Wrap a rag around the end to catch fuel that dribbles out. Last fuel hose I did I completely destroyed trying to twist it. I just cut it off and got a new hose. Sometimes that's just easier. Who uses a wrench for an oil filter? Long flat blade screw driver and a hammer will get any filter moving. If you think it leaks oil now, that Rotella T is gonna run through it like water.
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Wish I could recommend someone. The only ones I know that are any good work at the dealer, mostly on newer cars, and they're probably some of the ones you're talking about. You could probably go up there and talk to Ray and ask if he knows of anyone. There isn't much in the way of old time Japanese car mechanics around here that I know of. Plenty of Saab, Volvo, BMW, Audi, etc. euro box car places though.
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Two bad fuel pumps chances are pretty slim. Chance is there, but slim. Move on to the next possibility. (I hate to have you toss parts at it, I really thought it would be fuel pump related) Temp sensor, hook up a multi meter to it and check the resistance reading when the engine is running. ( especially when it starts running stupid) If you're not sure I don't believe it's too difficult to swap on the older engines that don't have the giant wire harness in the way. Unplugging it should set the ECU to open? loop mode, which will tell it to ignore certain inputs and run on default settings. Might also try unplugging the O2 sensor to see if that clears it up.
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Other way around. A stuck open EGR valve will cause a massive vacuum leak and will suck excessive amount of exhaust into the engine creating poor or no combustion. I don't think 98 has a MAF sensor but if it does check the tube between the sensor and the throttle body. Make sure it is tightly clamped at each end. And none of the breather hoses or idle control motor hose (if it has it) have fallen off.
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The gas lights on these are notoriously inaccurate. I've had mine come on with close to 1/4 tank still showing on the gauge. Other times I can peg the needle against the stop and not get a light at all. I tend to fill up when the gauge gets to the E line. Usually around 12.5 gallons. About 240 - 250 miles in my 96 2.2 5 speed sedan.
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Evap purge control solenoid. That broken hose would cause a small vacuum leak, which may make it idle a bit funny, but would not be intermittent. You're that much closer to getting it running right though. Metal shavings on the pump... It is magnetic, so steel/iron will be attracted to it. Any metal shavings that fell off of the screws during removal of the plate would have floated right over to the pump body on the way down. On the other hand, it could very well be bits from inside the pump that have made their way through the fuel system back to the tank where they would then get stuck to the side of the pump.
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I always have the best luck with Ultra grey when making gaskets out of RTV. The red stuff never works for me for some reason. Anaerobic is not the best choice for a stamped steel pan gasket as there will be different sized gaps between the bolt holes, especially if the pan bolts have been overtorqued. The gap distance may be insufficient to allow the sealer to dry. Anaerobic is best suited for machined aluminum/steel mating surfaces, where the gap between surfaces is within a few thousands of an inch, and mostly uniform the entire way around.
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I take it that means someone else (shop) did the work? Dig through your service records and see if you can find out which, if any, other parts were replaced along with the belt and water pump. Another common issue on these, but generally shows up much sooner, is the bolt on the crankshaft pulley is not tightened properly after a timing belt change. This allows the bolt to loosen up and the crankshaft pulley to start wobbling around making a knocking noise similar to a bad rod bearing. If this is the problem you will be able to watch the pulley wobble as the engine runs.