Celica :: Extremely Sluggish With Codes PO300 / PO302 And PO171 Constantly Popping
May 23, 2011
I have a 1.8l 1zzfe that has been rebuild because of the oil consumption problem. Right before it was rebuilt, it became extremely sluggish and was popping po300, po302, and po171 constantly. When the motor was torn down #2 cylinder had a burnt valve, rings were stuck, and carbon everywhere. All bearings were in spec, but they were still replaced. Pistons, rings, timing set, and plugs were replaced. I am still getting a sluggish acceleration, and popping codes po171, and po300. I have tested the injector resistance, seemed ok. Tested spark, seems ok. Tested the wiring harnesses, cleaned the maf, intake, and checked all of the vacuum lines. Not sure what to try next?
View 2 Replies
Advertisement
Does the 2011 6.2 have a DPFE sensor? If so where is it located? Codes are lean bank one and two and random misfire. Suggestions I have read online are replace DPFE sensor. I don't think maybe there is one on a 2011 6.2. Who have had it and had it fixed. Other things I see are clean the MAF sensor. Look for vacuum leaks.
View 1 Replies
My old pump wasnt building pressure so i put a new filter on and i switched wit a used one from an old car i had.key on engine off Pressure goes to 45 then instantly starts droppin? Once i turn key an do again same thing... Car is starting tho. fuel Pressure around 38 while idling. I pulled fuel rail up and looked for leakin injectors.. There was none yet pressure still bled down kinda quick. I also have my cat aloose to keep from messing it up any further. Only codes keep showing is po300 multiple misfires.
View 2 Replies
2002 Lexus SC 430 Getting codes P1351 po302 and c1201.
The engine is running shaky. If you just hold your hand on the steering wheel you can feel the engine shaking.
The car has brand new sparkplugs. What could the problem be?
View 6 Replies
03 Alero 2.2 with no maf sensor.
I have both codes 141, 171. I am trying to figure out if I should just change rear oxygen sensor or something else.
View 3 Replies
I am getting two codes, p0171 and p0401. Both point to something with the fuel are mixture I believe. My problem is that I can not figure out what the problem is. As far as I can tell there is not a vacuum leak. My MAF sensor looks clean and close to brand new. The codes come on and the car seems to want to jump. It does not stall, just starts to bounce a little until I let off the gas. And it does not do it until the car is warmed up. 2001 Santa Fe .....
View 4 Replies
Everything started with the typical lean bank 1 and bank 2 codes. I started at the basics change fuel filter PCV Hose & Valve clean the MAF changed air temp sensor(it was cheap). Still had same po171&po174 codes. Bought a obdll reader. After 3 weeks of nothing being accomplished I bit the bullet and took it to Ford for a diagnostic and they said it was definitely the intake gaskets.
I changed the gaskets and now this has gotten worse! I started the truck after reassembly and it ran like crap!
Checked everything and everywhere and could find nothing wrong. I then took off the vacuum line to the EGR and everything smoothed out. I didn't mess around and replaced the EGR the DPFE and the vacuum solenoid.
It still runs like crap especially at idle. I did the tests with my digital meter and found the vacuum solenoid is calling the EGR to be open all the time. I suspect that this would be the fault of the PCM? What should be my next course of action?
View 7 Replies
2002 F150 5.4 v8,,, I had troubles just over a month ago with a po305 code. i got the truck fixed with 2 new coils n some gaskets. I am having these po353 & po171 codes pop up now. The truck is running rough and I am curious to if its just another coil problem or if their is something I am overlooking or just don't know about?
View 1 Replies
I tugged on the little hose on the back pass. side of the engine,(5.4),...
and I could hear the vacuum leak that is apparently causing the erratic idle, and PO171 & PO174 to come up.
I know this hose is hooked to the Charge motion Control Valve on the back of the manifold,..I can't imagine what it does, as it terminates with some kind of plug or check valve??? Haynes say's to remove the entire manifold to get to the CMCV.
I can see it with a mirror,. I am thinking maybe long needle nose from Harbor freight,...bend the tip short,..maybe be able to change it out?????
View 14 Replies
This truck has been running fine then as my son was getting off the interstate it started acting like it was running out of gas then died. I went to tow him in and it cranked right up and never had another problem for a week. Yesterday he drove 80 miles away when the same thing happened shortly after he got off the interstate. He replaced the fuel filter which it probably needed but still won't start and stay running. It cranks right up the immediately dies.
First time this happened it was throwing codes PO171 and PO174. Now it is not showing any DTC's at all and none pending. We see no frayed or bad wires and all vacuum hoses seem fine. He cleaned the MAF with no change in behavior.... If it were an outboard motor or some kind of boat I'd say the problem is in the ignition switch except it does run a very short time before dying. If I immediately try to restart it won't stay running. If I let it sit for a while then it will run for about a half minute.
View 10 Replies
2001 F150 4.6. Just replaced all 4 oxygen sensors and spark plugs. Replaced rubber grommet on brake booster as it was leaking vacuum.
Truck is still running rough hesitating.
Pulled codes came up as PO141 oxygen sensor heater circuit. PO171 passenger side cylinders running lean. Fuel trim outside limits.
View 9 Replies
I have a 01 f150 7700 with a 5.4L and its throwing codes po135, po155, po174, and po171. Here is the history, last year had same code and found it was a bad ELLBOW on pcv hose, replaced and that fixed it, I also had a crack on egr valve and I replaced that too. This Jan truck was running bad in the morning and I traced it to a bad idle air controller, replaced it. I got a code and guy said I had a bad pcv valve so I replaced it.
About 3 weeks ago check engine light came back on with the 4 codes listed above, I replaced both front o2 sensors, 250,000 mile so I thought that was it but came back same code, I took it to a local mechanic and he said that the intake gaskets need replaced, but he call me later and said I had no leaks on the intake and that he did find another vac leak. He didn't charge me anything and sent me on my way.
I drove the truck about 50 miles and same codes back, so to recap I have cleaned mad sensor, replaced both front o2 sensors, a new egr valve, a new idle air control, pcv valve, pcv hose and ELLBOW, don't know what to look at next. Any clues?
View 4 Replies
I have the notorious PO171 and PO174 codes on my 2003 5.4L that come back whenever I erase them. I cannot figure out the problem. Whenever I start the truck it cranks for 3-4 seconds before it finally fires, then rpm's are very low, then they finally pick up. I have noticed a loss in power as well. I have completed a full tune-up (spark plugs, coils, boots, filters, etc.)
I have checked the vacuum and PCV lines numerous times, I have yet to find a leak. MAF appears clean. I am running a K&N CAI setup. O2 sensors a good, replaced the gas cap. The only other problem I can see is a bad PCV valve? I hope it isn't a manifold gasket. The truck has been very well maintained and still looks brand-new throughout at 250,000 miles.
View 4 Replies
My brake light goes off and on constantly. It happens when I am on an incline, start from a dead stop or go over a bump/into a dip. The fluid is fine, the pedal does not get soft or hard to press. Could it just be that the float is shot and needs to be changed?
View 5 Replies
Okay, little back story me and my dad pulled this 1986 Toyota Celica gts out of the wood after been left to rot with a broken timing belt. Anyways we fixed it, got it legally driving, everything was great. Well minus the acorns that blow out the vents when the ac was on. I was going to work one day and the oil pump locked up and broke the timing belt. We then had the motor rebuild .04 over I think... It ran like a brand new car but shortly after about 3 months I noticed every time I got in the car to go somewhere the idle was going up with each start of the motor. Now after sitting for a long time I really wish to get it running again.
It hasn't been started in a while, 2 years maybe. As I'm afraid that it might hurt the newly rebuild motor. It last idled at a constant 3500 RPM, if you're driving down the road it just keeps going tell you find yourself in 5th gear. It wants to take off from stop signs like a rocket as well... I know its not the cpu because we got one and swapped it out and it still does it we done a few other thing like check timing and try to adjust the idle screw checked the distributor cap. it has no codes flashing when using the jumper next to the engine. it has all brand new parts alternate, water pump, o2 sensor, fuel pump, oil pump, fuel injectors. I think that's about it.
View 2 Replies
I bought a certified pre-owned VW Jetta 2012 in August of 2013 that had 4,500k miles on it.. I currently have 60,000 miles on it. (I drive a ton)... but ever since I bought it my engine makes this jolting feeling when I slow down. it comes and goes and gets worse when I am due for an oil change. I have taken it to the dealer several times about this issue and they say that german engineering...I think differently. My engine light constantly comes on and my problem is still not fixed. What the issue is??? I am clueless about cars.
View 12 Replies
I have a well maintained '96 Celica 2.2 and for the first time in years it started acting up on the way home last night.
I got on the highway and was cruising at 65 and it started hesitating and popping and finally forced me to the side of the road. I was then able to start off again and reached about 60 all the way home but it was hesitating and not a smooth ride at all.
When I got to a red light at the off ramp, it died. I started it and it drove rough on local streets until I got home.
This morning I started it and it fired right up but then died immediately. Did that twice. Just tried again and it won't even start but just pops and makes noises like it's out of gas, even though 1/2 full.
Check Engine Light is on. I tried jumping E1 and TE1 but nothing happened.
View 3 Replies
I recently crashed my celica into a curb and had to replace the ball joint and the lower control arm on the right side. everything went well for a while but now there is a really loud creek/popping noise. it happens whenever i accelerate and come to a stop which led me to believe it was the cv axel going into the differential. but it makes the noise when the car is not running and i push down on the strut. i took it for a suspension inspection but they said they found nothing wrong with it.
View 1 Replies
I have a 2000 Celia gt with the 1.8l when I give it gas is bogs down an starts popping out the exhaust. I changed the plugs an I was told it could be the mass air flow sensor! What else could it be??
View 6 Replies
Okay so I have the cigar lighter issue. The problem was before it wouldn't work. Went and bought a new one, and manually installed with limited knowledge of how they work. The cigar lighter came with a light on it to illuminate it, but this light never turbo off. It would make the lighter part get hot and red to light a cigar so I would think it worked.but my issues were the light staying on with the car off and the plug killing 2 gps's and an ipod plug in. seems like it's overpowered but I don't see why. when the ipod plug went out there was a popping noise. The fuse is still fine though. Also when I got the car the light was unplugged from the back side.
View 1 Replies
2004 Santa Fe 2.7L V6 2WD ... Car was running fine, filled it with gas, and upon starting, heard a backfire into the intake manifold. It coded for a Cylinder 3 misfire so I had plugs and wires changed.
Now...The car starts, idles rough, accelerates sluggishly, and running rough any time it was around 2000 RPM. After I changed the plugs, it started bucking a little and stalls when I take off in the morning.
Coded and it's reading 7 codes, but some are duplicates:
-P0274 Cylinder 5 Injector Control High
-P0305 Cylinder 5 Misfire
-P0102 MAF or VAF A Circuit Low Input
-P0050 H02S Bank 2 Sen 1 Heater Circuit
-P0030 HO2S Bank 1 Sen 1 Heater Circuit
-P0274 Cylinder 5 Injector Control High (Shows Twice)
-P0102 MAF or VAF A Circuit Low Input (Shows Twice)
After having a backfire and then cylinder misfire...replacing the plugs and wires.
View 2 Replies
