Sierra :: Smog Test Failed - O2 Don't Cycle Rapidly
My truck is a 91 sierra 2500 over 8600 gvw (8 lug) 5.7 4l80E. After my truck failed a Calif smog test I set about testing the different sensors that are attributed to the reason it failed (a few points high on HC's). All the smog equipment and sensors tested ok except for the 02.
I tested the one in the truck when it failed smog, it came out at 400 millivolts key on engine off as my Haynes manual and the Autozone website said it should, after running the truck for 10 minutes and running it at around 1200 RPM's for 2 min to get the O2 cycling it doesn't, best I have gotten was a slow rise of about 0.01 millivolt rise per second to about 0.590 MV where it seemed to level off, the problem is 2 seperate new sensors do the exact same thing, none cycle rapidly between 100-900 MV as the Haynes manual and the Autozone website say they should.
The 02 is pre-cat stock location, no changes to the exhaust since my last smog check. I don't even know if this is the reason I failed smog, it's just the only thing that didn't pass my testing. the truck does seem to be running a bit rich (per my ultra sensitive tailpipe sniff test).
I did do all the normal repairs after I failed the smog test, tune up, air filter, clean the TB run a can of cleaner through the gas tank, ETC, then I failed the re-test by 3 points worse. The truck does not run bad or blow a bunch of smoke, the truck is not throwing any codes.
Nissan - Maxima :: 1995 - Failed Smog - Malfunction Indicator Light Would Not Go On
My 95 Nissan Maxima just failed smog because the MIL light would not come on Everything else passed. The light was working. I last noticed about 2 weeks ago after I had the car washed. I'm reading it can be a bulb or the computer? What can I expect in repair costs?
View 14 RepliesGolf IV R32 :: N80 - Car Failed Emissions
My car failed emissions and I was told that the N80 purge valve needs replacement.
View 2 RepliesHonda - Cr-x :: 1989 - NJ Inspections For High Emissions Failed
My Honda CRX, 1989 failed the NJ Inspections for very high Emissions. The engine has 200,000 miles. I had a lot of repairs done on it: new majorrnator, new oil pan cover, new engine gasket, new radiator, new axels. brakes, new alternator. catalytic converter, muffler. Unfortunately, now it failed for very high emissions. I added the Diesel and Car Cleaner, but did not work. what can I do to fix the car so it will pass the Emissions Test? what can be wrong with it, and will it cost me a lot of money. Is it worth trying to cure it or should I retire it, and sell it?I am on a very tight budget, and am depending on this car for my transportation.
View 11 RepliesVolvo :: Failing Smog For Fast Idle - Flame Trap
1988 245 DL, 240,000 miles.
My idle is at around 1200. It should be 750. If I take off the flame trap the idle drops. The flame trap is not clogged and there is good vacuum pressure on the small hose. After replacing my cat the numbers went way down on the tail pipe emissions.
So my flame trap appears functional and not clogged but it causes high idle.
Honda - Accord :: 1992 - Failed Emissions Test High NOX
My 1992 Honda Accord failed the emission test today for a too high NOX reading. The applicable standard is 2.50 and my car's reading was 2.61. I've read that high NOX has something to do with a malfunctioning EGR valve. Will replacing the EGR valve guarantee that I pass the emissions test? I don't want to start throwing money at all kinds of parts.
View 4 RepliesVolvo - V70 :: Reverse Gear Non Functional Suddenly
Having my beloved v70 XC SE towed to mechanic today. Suddenly reverse gear was non functioning. No choice. Assume it's time for gear box replacement (whatever that is). Only 133K miles on the vehicle and I LOVE this car. Is it worth the cost to fix transmission or should I just donate or try to sell the vehicle?
View 2 RepliesHonda - Accord :: 2001 - CEL Came On Showing Code P1457 For EVAP Leak / Failed Emissions Test
I own an '01 Honda Accord LX with the ULEV engine and 178k on it. My CEL light came on about 6 months ago. Ran the scanner and it showed a P1457 (EVAP Leak). Waited until now when my inspection was due and expected it to be caused by the EVAP shut valve as I read that's often the cause of the problem with this code. Mechanic said that it can't pass inspection because of the OBD fail but that the diagnostic scanner showed everything functioning properly, including my assumption about the faulty shut valve.
He reset the code and said to drive it the 50 miles for the system to ready itself and bring it back in. As I've reset the code several times over the 6 months to see if it would self correct, I'm pretty confident it will come back on. My questions are, is it possible I've done damage to the onboard computer by not addressing the underlying problem 6 months ago? Are there emissions problems that are not checked by the diagnostic tool that the mechanic should be looking for?
Prius (2004-09) :: Smog Check - No DTC Stored
So 2 weeks ago I moved to hamilton county in tn and it turns out that they smog check vehicles which I have never had to do. I was wondering how often does the gen 2 prius fail smog checks. My car has 120k and no dtc's stored .
View 2 RepliesCelica :: 1990 GTS - Fans Failed To Kick On
I recently took the engine apart and got the head resurfaced after the head got warped. New thermostat, waterpump, timing belt, serpentine belt, power steering belt, and gaskets for all sorts of stuff. After reassembling the engine everything worked fine. No strange noises. Only problem i am having now is that the cooling fan switches on really late, when the needle is 3/4 of the way towards H, sometimes even a little later. Fan is working as when i disconnect the cooling fan switch(bottom of radiator) and the fan does kick on. ECT was also replaced and nothing seems to work. I did replace the switch and the fans failed to kick on, unfortunately i got it from Autozone.This is a 1990 Celica GTS with the 5SFE 2.2L
View 8 RepliesMercedes-benz - E-class :: 1997 - How Long To Reset Computer For Smog Check
Mercedes 1997 e420, and has fixed up the minor problems. It runs good, but to sell it he needs to take it to the Smog check. How long it'll take to reset the computer for it?
View 2 RepliesVolvo :: 1990 240 Will Not Shift Into 4th Gear
My beautiful 1990 Volvo 240 will not shift into 4th gear! It is an automatic. The OD light will go on and off and I can hear it click when I turn it on. I just noticed that when getting on the highway it seemed as if the RPM was a little too high so I started paying more attention to which gear it was in and noticed today that it stays in 3rd gear.
I have already replaced the fuse #11. With the OD seemingly working fine, should I mess with the relay?
Volvo - 240 :: 1990 - AC Compressor Not Cutting On
1990 Volvo 240. The ac doesn't work and about 6 yrs ago it was converted to r134a. How can I check it see whats wrong?
View 1 RepliesPassat (B5) :: Check Engine Light Came On And Emissions Workshop Message Came Up
When I started my car the check engine light came on and it emissions workshop message came up. What is this? My car seems to be running fine.
View 3 RepliesVolvo :: 1990 240 DL Stopped Dead And Won't Start
I've got a 90 240 DL that stopped dead and won't restart. Hit it with starter fluid and it fires off, but stops. Had no way of testing fuel pressure, so replaced in-line pump. Tank pump runs, can hear it through filler opening. Problem persists, even with new pump and filter. Pulled vac line to FPR but no gas leaks there. Also, new plugs, distributor cap and rotor, new air filter. Pulled MAF sensor plug, still no start. Checked FP relay (also spare) and jumped FP relay to test. No go. Where do I go now? Should I check computer codes? Replace FP regulator, crank sensor? Everything? Can the on-board computer be bad?
Trying to find a path to go on since the new pump seems to give plenty of pressure.
Volvo :: 1990 740 Getting Good Spark But Will Not Start
My 1990 740 will not start. These are the tests I have completed:
Starter and battery are in good condition.
The fuel pump works, it delivers fuel pressure on initial starting.
The plugs are new and gaped correctly.
I am getting a good spark at all plugs.
I have tested for power at the cold start valve. It is connected to the top of the starter and is at 9 volts while starting the engine.
The timing belt is new and is operating correctly. The engine is timed correctly.
I have noticed that there is no fuel getting to the plugs. I pulled one and it is dry.
The code is 3-2-1. Cold Start valve? It is 75 degrees.....the car should start?
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Volvo :: 1990 Gas Gauge Stopped Working
I have a 1990 volvo 240 dl and the gas gauge no longer works. Just wondering if there's anything I can do to fix it.
View 1 RepliesVolvo :: 1990 / 740 GL Cut Off At A Stop Light And Now Will Not Start
I own a 1990 Volvo 740 GL. It cut off at a stop light one day and now it will not start. It seems to be a fuel related issue, if I squirt staring fluid into the intake it will start but cuts off immediately. I removed the fuel line that connects to the injectors and no fuel is coming out. I checked both the number 1 and 11 fuses both are fine. I have replaced the fuel filter, fuel pump, and the fuel pump relay.
View 14 RepliesAcura - Mdx :: 2007 - Clunking When Go Over Sharp Bumps / Check Emissions Light Came On
Problem #1: So I've noticed a clunking when I go over sharp bumps or uneven road conditions (think roots under the pavement) at low speeds, such as in a parking lot. The noise is only under the front left tire well area, and the car drives smooth and great otherwise. Is it a bad joint? The closest dealership is over an hour away, so I want to make sure I'm driving there with a real reason. The MDX has about 130K, transmission is great, and new timing belt, so I'm scared it's some sort of axle/joint problem...
Problem #2: The check emissions light came on about two days ago. I have filled up since, but it hasn't gone away. There is not a smell from the exhaust, and there is no rattling. Gas mileage hasn't changed one bit either! What could it be?? The car has been restarted quite a few times, but the light comes on each time.