C/K :: 93 Chevy Cheyenne - Speedometer Running Fast
I have a 93 Chevy Cheyenne with a 4.3L engine. My speedometer is running about 10MPH fast when at freeway speed. The truck has factory rims and the tire size has not changed. What to check? I'm thinking maybe the vehicle speed sensor?
View 2 RepliesChevrolet - Malibu :: 2003 - OBD Codes P0131 (o2 Sensor) And P0405 (EGR)
I have a 2003 malibu with 170000 miles on it. My husband uses this car to commute to work (10 miles one way). We will be buying a newer car in a month or so but my husband really wants to keep this car as a third/back up car. I purchased an OBD 2 scanner and downloaded the torque app (I really enjoy working on cars and I wanted to have more info easily available to me). The codes that it is showing me are P0131 (o2 sensor) and P0405 (EGR?). How should I proceed? I know I need to replace the O2 (easy) but im not sure about the other code.The car has a rough idle, terrible gas mileage and seems to drive as though I have shifted it past Drive and into 1st (its an automatic).
View 9 RepliesChevrolet - 3500 :: 1998 - Check Engine Light On / Codes For MAF And MAP Sensors
I have a 1998 chevy 3500 2wd pickup with a 454 engine. The check engine light is on. I have had the codes read and they were for a MAF and MAP sensors. I have replaced both. The check engine light is still on saying that I have a bad MAF sensor. I replaced it again. The check engine light still is on. What else should I look at to fix this problem??
View 19 RepliesC/K :: 1998 C1500 5.7 - CES Light Came On And Truck Started To Shutter When Slow Down
I was driving down the interstate and sped up to pass a car once I started to slow down the CES light came on and the truck started to shutter really bad. I got it to a scanner and it said misfire Cylinder 6 and he suggested that i change the cap rotor plugs and wires since it has been a long time since it had been done. I did so and and the problem has continues. It idles real rough acts like it is going to die, then under power it smooths out a little but you can still tell it it where. Above 3000 the CES blinks until you slow down and the the scanner still says misfire cylinder 6.
View 4 RepliesToyota - 4Runner :: Check Engine Light Came On And Code Was P0420 - O2 Sensors?
I have recently had about $1620 worth of work done on my 2000 4Runner because the check engine light came on and the code was P0420.. My invoice says they replaced the exhaust pipe assembly. Now 2 weeks later the light is back on with the same code...are the 02 sensors part of the "exhaust pipe assembly" or are they now going to tell me I need a bunch (2-4) 02 sensors replaced.
View 3 RepliesPrius (Gen 2) :: Diagnostic Codes P0420 And U0293
Looked around and could not find info on 2 codes. 2004 Prius : P0420 and U0293. One I believe is lost communication with hybrid system. Are these serious?
View 3 RepliesLexus IS 2014+ :: CEL On With Codes P0420 And P0430
A few weeks back I got my ARK exhaust installed with no problems. Due to some personal reasons I had it removed and my stock exhaust reinstalled by a different shop over this past weekend. I've been driving it fine for the past few days but today I noticed the CEL on with codes P0420 and P0430. I hit up the shop to see what was up and he told me he didn't touch anything that should have caused this. What should I do....
View 3 RepliesVolvo - S40 :: 2003 - P0420 And P0015 (B) Codes
My 2003 Volvo S40 Turbo (140K miles) came back with the following during emissions inspection (and failed). Is it worth fixing?
P0420 Catalyst system efficiency below threshold - bank 1 and P0015 "B" Camshaft position timing over retarded - bank 1....
Passat (B5) :: Coil Packs Went Out - Codes P0301 And P0420
After changing 3coilpacks on my Passat 04 1.8T soo far finally the last one went out. The codes I got are P0301 (which is misfire cylinder1) and the other code is p0420 which I do not know what it is... I think it might do something with cat or something.
View 1 RepliesCamry :: 2002 - Getting P0100 / P0110 / P0420 Codes
The wifes camry all of a sudden tossed up CEL. Codes read P0100, P0110, and P0420. Car has about 125K miles, runs fine. I cleaned the MAF sensor with CRC cleaner just for that, pulled EFI fuse to reset, came back on immediately when started.
I was thinking of getting a used one from pull-a-part, but they only have 98 camrys at the moment. Any chance MAF is the same?
Golf IV / Jetta IV :: CEL 2 Codes P0420 And P2181 Came Up At Same Time
I just picked up a MK4 gls 1.8t jetta for a project car.... I wanted to keep the miles off my MK6 gti.... The jetta has 92k miles and the first thing I had done was the timing belt service done as well as a new alternator clutch pulley and oil change... 1 day after I got the car i was driving to work and the CEL came on took it to auto parts store... 2 codes came up
P0420: catalyst system. efficiency below threshold bank1
P2181 cooling system performance
I have the green sensor and I think its time to change the thermostat... My question is is it just a coincidence that both codes came up at the same time or is i possible it is a sign for something else... i just had the thermostat changed 10 min ago...CEL light is gone so i will wait to see if the cat code comes back.
Lexus RX 2010-15 :: AWD / VSC Alarms With Codes P0420 And P0430 On RX350
We bought the 2010 RX350 a couple of weeks ago and have gotten these codes twice.. I have a good scanner and know what the codes say about Cat's bank 1 and 2 operating below threshold. I know some of you are going to say replace the cat's, others are going to say replace the sensors and neither should be the problem... If it were a cat or sensor, then they would not come in at the identical same time... It has to be something common such as a throttle body, charcoal canister, or another item upstream of the cat's... Not the gas cap either...Maybe a vacuum hose..
View 14 RepliesCelica :: 2003 - CEL On With Codes P0420 / P0442 / P0446 And P0456
The check engine light on my sons 03 celica is on. Went to autozone and they got the codes for me. They are P0420, P0442, P0446, P0456. I realize that I should probably have an OBD11 reader. What steps do I take to fix this?
View 2 RepliesElantra XD (2001-06) :: CEL Came On - P2195 / P0420 And P2096 Fault Codes
Check engine light came on while driving home from work. The car seems to be running fine but I got the following codes p2195, p0420, p2096. I have a 2006 elantra with 184000 miles. Should I just replace the upstream oxygen sensor or is there a more likely problem? I rather not spend the money if this combination of codes is likely has a different cause but replacing the sensor appears to be the quickest and easiest solution.
View 5 RepliesGolf IV / Jetta IV :: CEL Is On Throwing 3 Codes - P0171 / P2637 And P0420
What I need to do to fix these codes
p0171 system too lean bank 1
p2637 torque management
p0420 ...
IS F (2008-2014) :: Check Engine Light On - P0420 And P0430 Codes
I took my car to get inspected today and it was rejected because of P0420 and P0430: Both Catalyst system efficiency below... My check engine is also on.
I have the full Meisterschaft exhaust installed (+midpipe) PPE headers and K&N intake. Whats the problem and how can I get this fixed so I can pass the inspection?
Toyota - Corolla :: P0171/ P0420 And P0441 OBD Codes - Excessive Oil Burning
I just bought a used Toyota Corolla 2002 CE with 120K miles two months ago. the car seemed fine and drives fine too. After a while I found out that the seller had removed the "check engine" light, so I read the error code by a instrument and I got these errors. 171,420,441. And I noticed that the engine burn a quarter oil every 200 miles on long drives!I checked the VSV valve and connected hoses but no problem there. Since the car has just 120K miles, I'm not sure that the piston rings are worn out! I'm wondering what could cause all of these errors?
View 19 RepliesFord Super Duty (1999-2016) :: 2013 F350 - Codes P0420 And P0430
I have a 2013 F350 Crew Cab Long bed xl with 128000 miles on it. I just barely bought it from a small dealer and had a check engine light come on for the cats.(P0420 and 0430)
I have spoke with the dealer and he assured me that he would replace the cats. He stated he had O2 sensors replaced and thought he had fixed the problem. Not sure if he replaced all sensors or just the fronts.
He has been avoiding calls lately and will not return my messages. Anyways, My question is what should I be looking for to prevent future cats from going bad. I just ordered a bluetooth OBD 2 scanner and bought the Torque Pro App.
I am not new to working on trucks but they have all been 1995 and older and i am new to anything scanner wise and do not know what I should be monitoring. If I can't get this guy to replace the cats I want to monitor everything to make sure the cats are bad.
BTW, Fuel Mileage is at best 12.3 with an extremely light foot, Driving normal it drops off to about 11.8-12. Is this a normal MPG in these trucks? I have seen post about people getting close to 16 unloaded not smashing throttle?
On another note, I just remembered that my traction control light will come on with no wheel spin at times after starting the truck and driving away.
Ford Super Duty (1999-2016) :: 2008 F350 5.4L - CEL Codes P0420 / P0191
I just recently purchased a 2008 ford f350 5.4L gasser, supercab long box. The truck has 167,000km on it. I flew about 700km from my hometown to pick up the truck and drive it home. After driving about 300km I started noticing a few problems.
The engine light codes that have been stored as of now:
P0420 (Catalyst code)
P0420 (Catalyst code)
P0191 (Fuel rail pressure sensor i think?)
The issue I'm having is that the truck has absolutely no power going uphill or accelerating. If I'm climbing a hill and have the gas pedal pushed in at a steady rate its almost as if the transmission wont shift, and if i push harder on the gas the truck begins to shudder. When the truck is cold it runs normal and climbs hills no problem, but once it heats up the problem returns. Another odd thing I noticed under the hood on my drive home was that they disconnected the vacuum line from the fuel rail pressure sensor and simply plugged the line on a random bolt.
Also, the truck apparently has a cam phaser lockout on it and I dont know if that could be causing the issue? Here's a list of some of the troubleshooting ive done so far.
-checked all fuses(start at the basics eh)
-checked resistance of coils(checked out fine, even after engine was warm)
-pulled spark plug 1 and 5, they both seemed fairly clean, not fowled up
-generally looked over all the vacuum lines, seemed fine couldn't see anything else really out of the ordinary
-while the truck was running I used a temperature gauge to see what the exhaust system was doing. On the drivers side when the truck was warm before the cat I had 140C and after the cat it was 80C(good indication the cat is plugged?) The other side tested fairly consistent.