Nissan - Maxima :: 1993 - Rough Idle / Horrible Gas Mileage
Apr 29, 2014
My daughter has a 1993 maxima SE (3.0 DOHC) that ran ok until one day when she left work and started the car it was running very rough (missing and sputtering). She had the car towed here and I looked it over,it had a lot of visible problems which I have fixed (cracked coil packs,leaking valve cover gaskets, filthy fuel filter,clogged pcv valve, oil saturated air filter,spark plugs burned down to nubs etc, I replaced all those obviously defective parts) but the car still idles very rough, idles too low RPMs (400-500 rpms), exhaust smells like raw fuel and it only gets 5 miles to the gallon on my last test drive.
I removed the intake manifold to get to the rear fuel injectors to see if they might be stuck open and leaking.The car had been sitting for about 5 days with the battery disconnected and when I removed the first injector there was no fuel in the injector or the rail and no pressure in the rail.I left the injector out overnight and the next morning there was fuel all over the top of the engine and in the fuel rail.I put the injector back in and unbolted the rail,I reconnected the battery and turned the key to start the fuel pump.I waited for about 3-4 minutes and did not see any fuel leaking from the injectors.I turned the key off and removed it from the ignition,disconnected the battery and bolted the fuel rail back down.I again removed one of the injectors and there was no fuel in the injector or the rail and no pressure in the rail.After about 2 minutes, with the key out of the ignition and the battery disconnected,I saw fuel start filling the rail and the injector port, so I quickly put the injector back in.
I`m thinking the next step would be to replace the fuel pressure regulator and recheck the injectors for leaks.Am I on the right track here with the pressure regulator? What could be causing the car to suddenly start acting this way, my daughter said the car ran fine on her way to work ( although I hardly think it could have been running "fine" with cracked coil packs,clogged air filter,worn plugs etc)...
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1993 Nissan Maxima. Great little car except when engine gets warmed up it begins to run rough and dies. At idle, when accelerating, while maintaining speed. Since its a manual it is a simple matter of dropping into neutral and it fires right up again... no problem. Then stall repeats. Went through routine steps checking plugs, filters, wires, sensors etc.. The O2 sensor (only one) is gone - as is the converter. At some point someone replaced it with a straight pipe.
After not finding a obvious answer, I began to ask around (auto-part stores, neighbors, some patrons at the saloon). Conclusion... OBD failure causing a "kill" routine which shuts off the engine. When I restart, it resets. Once it fails to enter a static state (engine is warm) it kills again. I replaced the computer with a used one "known" to operate (so the e-bay seller said) Installed it and bingo, car ran like a top for 15 full minutes - best ever. Then after 15 minutes or so, suddenly began to run rough and stalled twice before I got back home. I runs now just as before (but oh those glorious 15 minutes).
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My 07 2.0T (101k mi.) Passat idles roughly when in the drive position (at a stop light, or sign, etc.), the engine sounds "gruffy", and suffers from a slight loss of power with horrible gas milage. I've had spark plugs and the coil pack replaced two weeks ago, and still can't seem to find the source. There are no misfire codes or any others showing up. From reading many posts here, I've found that a common issue is carbon build up for similar symptoms of my car. Do I need fuel injector cleaner, and or valve stem cleaner, etc? As far as the possibility of cleaning out the intake valve, I only open the hood to add oil, washer fluid, check my oil, and wipe down the engine.
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My car has suddenly started stalling a lot. I can get it to start right up if I put the clutch to the floor and it will idle fine until I start coming up of the clutch even while it in neutral. At times it will idle in neutral then start to idle rough and stall. I can drive it in reverse but can't drive it forward except in first if i keep the clutch at a certain point and not release it all the way. However when I try other gears sometimes it's like it does't want to go stalls. What it might be?
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My 98 Maxima won't idle without dying, it sputters when you accelerate, and it tries to die while coasting. I've changed two O2 sensors (AutoZone gave me the code for bank 1 sensor 1 & 2) changed spark plugs, tried fuel injector cleaner, oil change, and cleaned MAF sensor & checked the wiring. It;s still spitting out the black exhaust. Although after changing the O2 sensors it quit for about a day or two but started again (I'm guessing the other sensors need to be changed to) But the main problem is once it warms up, it really runs like crap, and is a major gas hog. I'm getting about 12 Mpg.
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I have a 2011 Nissan Maxima SV that has poor gas mileage. I took it to Nissan to get checked out but they said there's nothing they could do because the car is showing no codes or no check engine light. I got my spark plugs changed, it seemed like it worked but a week or so later, it went back to how it was (the gas mileage). 2 weeks later, my mechanic checked the spark plugs in front of me, no rust or leaks on them. I burn a half tank of gas every 2 days and that's just driving local to work and back.
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My 1993 Maxima at times will not start. There is no rhyme or reason for it not starting. Either that or I have not found a particular reason or reasons for why it will not start. Sometime it is over night and at times it may happen when it sat for a couple of hours. Took it to a garage which they check the battery, starter, ignition switch, starter relay and all was okay.
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1993 Nissan maxima
The battery went dead so I put a new battery in and a few days later I had the hood open and I had my wife start the car. I heard a loud cracking sound and saw a large bright blueish flash above and between the starter solenoid and the body of the starter.I had my wife turn the car off and start it again and it did the same thing again.
What the heck is going on?
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The car wouldn't start ( just cranked a lot) I had the car towed to a local mechanic. He replaced the MAP sensor and now I've noticed 2 new problems.
1) engine idle rpms are erratic. When the car is started RPMs are at 1,500 after a few minutes they drop to normal range of 700 to 900 RPMs sometimes they drop too low and the car stalls. sometimes the RPMs surge up and down from 800 to 1,200 rpms.
2) very hard shift from 1st to 2nd gear. All the other shifts are normal. He said that he adjusted the RPMs because they were too high. I don't know how he did that because I thought that you couldn't adjust them because they are controlled by the computer.
Some other info, it has an exhaust leak (which Im going to fix) upstream of the O2 sensor, where the resonator connects to the headers. I replaced a rear brake line and while bleeding the lines I got brake fluid on the ABS wheel speed sensors. I replaced the coolant bypass hose and got water all over part of the engine compartment. It was immediately after I replaced that hose that the car wouldn't start.
Could the exhaust leak be the cause of the erratic idle rpms? Could water have gotten in a wire connector or shorted something out when I replaced the bypass hose? The bypass hose is directly above the transmission. My biggest concern is the hard shifting from 1st to 2nd gear.
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1994 Maxima SE 5 speed manual with 178k runs great when engine is cold, then a cylinder starts missing. Symptom is worse in low gears. Then, miles and miles without a miss. Replaced rear ignition coil and it seemed to fix the problem... for about 20 miles, then it started missing again. And stops missing… for miles.
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1998 Nissan Maxima had a check engine light come on and started running very rough. I took it to get a code read and came up with P0320 and P0325. I'm not worried about the 0325 since that's a knock sensor. 0320 is a misfire on cylinder 2.
With the car idling, I pulled the power connector from coil pack 2 to see if it made a difference in the idle - nope. I did the same for the other cylinders, and each responded with a noticeable change in the idle, which was remedied when it was reconnected.
I moved the coil pack from #2 to #4 (swapping them) and the same problem existed - idle was rough and didn't make a difference when I pulled the power on 2, but it did on all other coil packs. So, it seems the coil pack ins't the problem since multiple packs don't seem to make 2 work, but they work on other 4 and 6.
I then pulled the spark plug from cylinder 2, it was very black and looked in bad shape. I replaced it. Still no love.
I then put a spare plug in the coil and was able to see spark as the engine ran, so it seems that the coil pack at 2 is getting juice.
So, I have gas (big odor when the car is running - seems super rich) I have spark. Still running very rough and the 0320 code remains.
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My Nissan Maxima GLE 2000 is showing CEL with code of P1320 ONLY, and the car is running rough/or loss of power. The shop that checked for the code advised that it could be something related to Ignition, and also provided me with the system generated list of reasons for the code. Before I decide to do anything, I wanted to check what option I have to address this in a most cost effective manner:
1) Is there a quick way to check which coil would have gone bad ?
2) Is it advisable to change 1 LH and 1RH at a time, and see if it fixes the problem ?
3) Could it be cam shaft sensor that could have gone bad ? Are there any symptoms of cam shaft sensor failure to isolate it to one way or the other ?
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1990 Maxima..245,000 miles...car idles fine except when sitting at stoplight for more than 15 seconds, then idle starts to drop slowly and become unstable. Then there is a separate issue: After putting the car in Park (after warming up) the car will drop/surge from approximately 1500 to 1800 rpms three times and then go back down to normal (I am guessing transmission clutch).
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I have 2007 explorer with the 4.6 V8....
Recently it started running horrible. Rough idle, drives badly, hesitation, etc. Check engine light is on, code P0171. I cannot find a vacuum leak, and i am pretty much at a loss. Before it started running poorly i replaced the thermostat, and flushed the coolant. I am assuming this is a coincidence.
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I'm having an issue that I think can be resolved. There are no leaks...no smells...I get roughly 12 MPG.. I drive like an old lady YET gas evaporates like boiling water in my car.
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I have a 2002 Toyota Celica GT and I seem to be getting horrible gas mileage. I have replaced the Sending Unit. Also, I have attached a collage of photos that I was able to capture on my cell phone of what its doing to understand what could be the problem/issue.
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I have a 2000 Alero w/ 2.4 103,000 miles auto. I have been trying to fix a problem for about 3 months. It all started one night when i got stuck in my backyard in about a foot if mud. I thought i could drive it out, but when the wheels would spin and traction control would limit the rpms. After getting out the car would skip every now and then going up an incline at highway speeds in 4th gear (drive) then it would skip while idling. I could get it to run smooth if i hit the pedal and made it shift to 3rd. I drive this car daily and the problem has got worse slowly. Now its hard to crank and when it does there is a small amount of white smoke with strong gas smell while the motor spudders for about 10 secs.
It will finally "clear" up and still misfire every few secs or just cut off. Gas mileage is terrible between 15-18mpg. The engine light and trac off light has only been on twice. Both times the code was for random misfire of multiple cylinders. I have put plugs, boots (wires), distributor, 2 fuel processor regulator, seafoam, all octanes of gas, pulled injectors (looked ok a little dirty but still could be one) and I have ordered ignition control module. Its getting hard to drive and even harder to sell. It has just started the white smoke and gas smell and i think its that's the pressure regulator, but the skipping and rough idle....
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I have a 2001 VW Passat Wagon 1.8t AUG. A couple of months ago, I took it into my shop for a check engine light. The did the following work on the vehicle:
Replaced MAF sensor
Replaced broken oil level sensor
Replaced outer CV boots
Resealed my transmission pan (it was leaking)
Replaced bad vacuum hoses
When I got the car back, it was idling really rough, and one time it even stalled. Just after starting it, when I hit the gas it wouldn't respond immediately and sputtered for a little while. Once I got going it was usually OK, unless I was going uphill...where it wouldn't perform as well and the engine noise kinda wavered. I also noticed that my gas mileage wasn't nearly as good as it used to be. (I never experienced any problems like this before they did this work) So I took it back to the shop and they replaced both the front and rear 02 sensors. I still had the same problem, so I took it back, and they replaced the fuel filter. Still has the same problem.
The light came on after a month, so I took it back and it was the random cylinder misfire code...and they said that didn't really know what to do about it. So I decided to take matters into my own hands. I cleaned the MAF sensor they installed (took it out and sprayed it with cleaner) nothing. I replaced the spark plugs and while doing so found that one of my ignition coils was bad, and I replaced that as well. Turns out the AutoLite plugs that a local parts store sold me are crap for this engine (actually caused misfires) so I went and got Denso double platinum plugs the next day and put those in. And finally I changed my air filter. Still having problems.
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I have a 2009 Hyundai Elantra SE, and up until very recently I've had no issues with it, and am very happy with this car. About 2 weeks ago the malfunction indicator light came on. I checked the manual and it said to contact the dealer ASAP to have it checked out, but the car will still run. I've been terribly busy, and this is the first chance I've had to bring it in, so that's the plan for tomorrow. What this could mean, and will any necessary repairs be covered until the 100,000 mile warranty? If there is a repair needed that isn't covered, I definitely don't want to take it to the dealer!
Also, a few days after this light appeared, my gas mileage has been horrible, apparently. I say apparently because the digital mileage range now tops out at 255 when my tank is full; it used to be 336. It costs the same to fill it, and takes the same amount of gas, about 12 gallons. The gauge goes up to above the Full line, but I seem to go through gas so much quicker. Today for example, a trip that normally would cost me maybe $10 in gas, at the most, cost me almost $20. I haven't noticed any leaks, so perhaps this is related to the indicator light?
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2002 F-150 4x4 super crew w/5.4..So I've got the P0136 code, horrible fuel mileage (around 7 mpg just driving to work without hitting very many lights) and the check engine light comes on intermittently, and I get that code. I have borrowed my friends scanner ("Determionator Scan System") and I can see the live data from the 02 sensors. Today I drove around for a while and watched the scanner and the H02 data, and the downstream sensor on bank 1 shows at most, .09 volts, and it also says its detecting a lean mixture. The code P0136 is for this sensor in particular, and I have heard that an 02 sensor should be around 1 volt. The downstream sensor on the drivers side showed around .75 volts at max.
I believe that it is working correctly, or close to it, and I do not get a code for that sensor. So my question is, is the downstream sensor on the passenger side (bank 1) causing the P0136 code and the poor fuel mileage? also, could an exhaust leak cause the sensor to throw a code and not be bad at all? I do have some very minor exhaust leaks, on both sides of the truck..I'm leaning towards replacing that one 02 sensor. The wires and plug connection to that sensor look fine, plus I would think that if there was a bad wire/connection it would not register any voltage at all.. I have to add, the truck runs fine overall after I replaced the intake manifolds last week. It does still idle high, around 1,000 rpm, after coasting to a stop, then after a few seconds goes back down to a normal idle of around 650 rpm. but idles normal upon starting or in park.
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I bought an 04 f150 super crew cab with the 5.4L triton in it 3 years ago with 50k on it from my great uncle who was the original owner. It's had a tick to it since he had it but the dealership told him they couldn't find anything wrong with it and to get use to the noise. It's ran pretty good up until last couple months where it's been running really rough and not doing the best. It's still hasn't been all the time but more intermittent and comes and goes, but when it's running bad the rpm drops down to about 200 and my motor sounds blown.
When that's happening I could put in neutral and rev it up and it would go back to normal for a bit, but now it's all the time and stalls out even at 70 on the hwy. The codes it throws are, p1000- monitor checks not complete-more driving required, p0345- camshaft pos sens circ error(bank 2), p0022- A camshaft pos timing-over retarded bank 2. Things I have tried-changed all 8 plugs, added K&N air intake, replaced both cam sensors, replaced fuel pump driver module (due to corrosion). Tonight I'm going to clean the throttle body, mas air flow sensor, change fuel filter.
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