I have a 2002 VW Passat that I cannot communicate with the ECU. I have the latest version of the Vagcom software downloaded. It has the factory radio installed and still will not communicate. The car runs, but runs rough. Anything else to check?
View 5 RepliesI have had this problem since day one. The idle seems to be very rough once you give it some gas and drive the car it runs smooth as silk. The dealer told me that is the wayit should be due to the narrow V6 with one head cylinder. I have had an 02 Passat V6 and I dont remember it having a rough idle.
My other issue is again since day one when I am moving very slow like when I am backing out of my drive way there is what I would describe as a grinding sound. It does it all the time forwards and back, all day not just the first thing in the morning. Again the dealer says it is normal.
I just had my first oil change about 2 weeks ago and was hoping these were just thing that would be addressed then but they dont seem to be better or worse always the same.
I have a 2000 Honda Accord LX V6 auto with about 125k on it.It seems to me that when I'm going downhill for example - so I am not giving it gas - it feels like its running rough - sort of. It kind of feels like the brakes are being applied then released, applied then released.Now, once summer arrived and I had to start using the AC all the time, after the car was warmed up and having run for 20+ minutes, it would REALLY start running rough. I watch the tachometer and it bounces up and down. When I turn off the car for awhile like to go into the grocery store, when I come out and try to start it, it wont. It just cranks but wont catch. If I do manage to get it to catch, it stalls. I have managed to get it to catch-apply the gas and pop it in to drive and make it home, but something is obviously very wrong and I don't want to get stuck somewhere. I have a code reader and the car has not produced any codes.
View 4 RepliesMy 99 Lumina's battery would drain after 36-48 of just sitting (12-24 before replacing the battery.) I had tried somethings did research and had no luck. In January this year I got an oil change at a jiffy lube type place. They removed something by the spark-plug wires right at the bottom edge of the windshield. When I tried to start it the car engine it jerked, shook, and didn't start. They did something in that same spot then it started right up.To my surprise the battery didn't drain any more!! Then 2 weeks later it started running rough when I slowed down, started to die, was very hard to start, then ran very rough, next I had to step on the gas and ride the brake for 4 blocks then it died in my driveway. That all happened over 15 miles wile in traffic. I tried to start it many times with no luck. The battery was fine after 4+ months of sitting.
View 3 RepliesToyota celica 2000 GT automatic, has a problem on cold start, especially when the temperature is below 32 degree Fahrenheit. The engine starts and runs roughly, but most electrical devices do not work, the dashboard and car windows are power off and I can't change the gear so it can not move. Only after warming up for about 10 minutes then the dashboard will work, then everything is fine till the next morning. I sent it to a small garage but they found nothing.
View 3 RepliesWe have two 2000 Echos with 125,000 and 130,000 miles on them. We took my husband's Echo into the shop because it died when idling, and then it started running rough and stumbling. Also needed an alignment. They fixed it by replacing the idle sensor, the mass air flow sensor, and worked on the valve train. They said they couldn't do the alignment because the control arms needed to be replaced due to the bushings. A week before his car went into the shop, my car started running rough and stumbling. So I took it in when I picked his car up. Same diagnosis except for the idle. Is it reasonable for BOTH to need all this work at the same approx. mileage?
View 5 RepliesI have a really nice 1986 Ranger XLT with a 2.9 V6 (injected) and OD Automatic with about 135k miles. I've had the truck for over ten years and have been pretty happy with it. I'm still trying to correct a couple of nuisance items:
1. Sometimes it runs smoothly, and at others it has a rough idle, and once in a while it will even stall. Before it stalls, it idles or runs roughly, and will miss erratically. When it quits, it does not fade out like it is running low on gas; it quits suddenly, like the ignition is turned off. If I am driving at highway speeds, sometimes it will buck as it misses, and sometimes stalls out. But it always starts up right away afterwards. This does not happen often, but when it does, it happens several times over hours or days, and then goes away by itself for months, even years, and then comes back for another round.
I was hoping whatever was wrong would totally fail, but it has been several years and is not getting better, nor worse. Fuel mileage varies, too, from 16 to high 20's MPG. I have new low- and high-pressure fuel pumps (dual tanks), new gas and air filters, checked all the electrical connections, put in a new ignition switch, new O2 sensor, Air Flow sensor, EGR, replaced all the vacuum lines, new battery and cables, new starter, all new electrical relays, fuel pressure regulators, new fuel pump inertia switch, tuned up engine (incl. wires, cap, rotor, ign module, plugs and timing), and cleaned out the already sparkling-clean tanks.
2. My oil pressure will drop at idle to low-normal when the engine is warm. It never goes to below Normal on the gauge. I have replaced the gauge, sending unit, and oil pump. This is a long-term issue, and is not getting any better or worse.
but 2nd time 6.0 psd owner. 2 weeks ago we picked up an '03 Excursion and were thrilled because it's been running like a dream and getting great mileage. However, according to my wife just yesterday, and after me driving it today, we have a big problem.
The engine starts, momentarily runs smooth, but then quickly becomes very rough. When trying to drive, it will make decent power, but it has an "off" feel to it, like it doesn't quite make as much power as it did, and it has a slight vibration to it.
Then when you coast to come to a stop, or pull in our driveway, it runs REALLY rough and badly, and usually stalls. I have begun the troubleshooting process. Here's what I know: Ficm tests good - 7 pin w/key on only gives ~46V (only tested w/voltmeter) Had an oil change done today and added a bottle of Hot Shot, will add the fuel treatment when we put more diesel in Believe ICP sensor to be OK. I unplugged it and no change Appears all injectors are firing since it ran down the highway decently, AND you can hear all injectors 'triggering' in a uniform manner with key on Turbo probably isn't sticking because made great power before, and decent power even with the problem NO Check engine lights / codes thrown
Details about the truck:Early '03 w/ 189,000 miles EGR delete done in a previous life w/ IPD kit Turbocharger replaced, in a previous life Headgaskets done, in a previous life (no ARPs though )
Questions & next steps:Even if there was no change w/ ICP unplugged, does that truly rule the ICP out completely? Could the IPR be the culprit?
Others? I have ordered a Scangage 2 and it will be here Tuesday. What's the first thing I should check? To me, this very much seems like an electrical problem; my gut tells me it's some kind of sensor or electrical signal error. What's the best way to investigate this path?
The engine turns over very well, and sounds very uniform so I don't think compression is the issue. Head gaskets have been done, although not with ARP studs. Batteries are very fresh and turn it over very fast. I have already learned a ton reading through these forums and just need some additional direction & brainstorming!
Having fitted a 9W7 - 7P6 035 730 C bluetooth module to my 2009 Passat recently, to replaced the old basic nokia universal car kit system. Everything works except I can't operate/control any of the phone menu which display on my white MFD screen, the "phone" button, "OK" button, "arrow up" button, and the "arrow down" does not want to communicate with the bluetooth module. I have a 8 buttons multi function steering wheel. all function in rns510 are working(address book,call history,etc...)
View 4 RepliesThe problem started when my clutch fluid began leaking a couple of months ago. I first noticed that it would take an unusual amount of effort to shift into gear and, after checking, found the clutch fluid completely gone and I filled it up immediately. Three weeks later, the fluid was gone again, so I took it in to a reputable mechanic, who said I needed my slave cylinder replaced. A week after replacement, I start to notice that my car increasingly had trouble "catching" into gear (my engine was accelerating, but not moving very fast; soft clutch). I thought maybe something went wrong with the slave cylinder repair and took it back to the same place, but the news came back that I needed a new clutch.
At 143,000 miles on the original clutch, I wasn't surprised it was time for a new one. Immediately after picking up my car with the new clutch--and by immediate, I mean right after I pulled out of the mechanic's parking lot--I noticed my car was driving horribly. The engine was idling extremely rough and it felt gritty when pressing the gas pedal during acceleration. I took it back to my mechanic the next morning to explain the problem, but they treated me like I was an idiot, didn't detect anything wrong with my car, and clearly didn't know what I was talking about even though I personally showed them my steering was shaking pretty badly while idling.
A few more days of the rough idle/gritty acceleration and I went back, but they just suggested getting my fuel injection system cleaned. I personally checked to make sure that the wires in my car were connected properly, as well as making sure the hose connecting to the air filter was on there correctly. Today on a whim, I took my car to Autozone to have them check the computer, even though I don't have a check engine light on, and sure enough the only code read was P0302--Cylinder 2 misfire.
My question is, what is the most likely cause of the cylinder 2 misfire (given my car's very recent history) and most importantly, could the mechanic have caused the problem I am experiencing? How should I handle this situation with them from here? I will no longer be using their services after I get this problem sorted out, as I feel like my car did not receive the best service.
Lately I have been having some trouble with 2002 Oldsmobile Alero v6. When the car is sitting in park I have noticed that the engine idles roughly, And when I try to drive it, the car hesitates on the acceleration every now and then. Also the emissions light (the orange one) will come on for awhile and then dissapear. At first I though it was dirty fuel injectors so I added some Fuel injector cleaner, but that has not fixed the problem. I was thinking the park plugs may need replacing?
View 1 RepliesI have a 2002 7.3 160k miles and recently it has been hesitating while cruising along at 35mph roughly. In park right off idle the engine does shake but if i give it a little more pedal the shake clears out. Not sure if that has anything to do with my issue but im just throwing it out there. Anyways cruising down the road the truck will hesitate almost like its not getting enough fuel the engine bogs then picks up then bogs and picks up but it i give it more pedal the truck gains speed and the issue stops and i can resume cruising at say 45 and not feel this hesitation at all.
On the toll road i never feel the hesitation cruising at 2k rpms. A problem that might of lead me to this issue was in the winter below 30 degrees i would drive the truck get to a stop light engine still cold or maybe warming up off the cold mark but when i go to take off from a light its like my fuel pedal doesn't work but the rpms will climb a little then the truck takes off and jerks really hard since i had the engine rev'd up. which made me think throttle sensor immediately or maybe the trans is having issues. since its warm out I don't have that issue now so i believe that it the trans. do you think maybe my hesitation now is also the trans? I never get a CEL. I did recently change the coolant temp sensor and now i am having this hesitation issue.
But I was told the ECM does not care about coolant temp on an auto truck so i dont see how that could affect my performance. Instead the autos monitor oil temp and the manual trucks monitor coolant temp correct? I had an issue like this with the truck years ago when i purchased it i was leaving the gas station on very cold maybe 10 degree day and the truck fell flat on its face and threw a bunch of codes but i let off the throttle and got back in it and it took off like nothing happened. So im not convinced the coolant temp sensor was defective from factory. But this old problem of not accelerating seems to be coming back to haunt me.... and i think its in a new form with the hesitation once in a while. I think i forgot to mention the hesitation isn't all the time!
It only happens after being at sustained highway speeds for 45+ minutes. When exiting the highway, the transmission torque converter lock disengages with a jolt, usually around 30 MPH. Has happened every time I've done extended highway travel since the car hit 1000 miles. And more importantly, is there a dealer fix?
View 2 RepliesI have a 2002 VW Beetle 1.8L Turbo with over 120k miles. Recently it started idly roughly on occasion and had a slight rattling noise but only when stopped. When it was driving, it felt fine. This went on for about a week and then one day about a week ago it started for about 10 seconds and then stalled. Since then it will turn over, but not start. We've checked the starter, fuel pump, fuel pump relay and ignition coils and have replaced the crankshaft sensor (which was what I found on VW sites as saying it often solved problems like mine). The battery is new. Part of what I saw when researching was in addition to what is currently happening other owners had a long term issue with the car bogging down once in awhile at high speeds (50 mph+) for a few seconds and then picking back up again. My car did this as well and that's why I thought the crankshaft sensor may be the issue.
View 3 RepliesOK, not sure where to start so here goes. I have an 02' f-250 with the v-10. I just had some minor front end body work done and when I got it back I noticed that it just didn't feel right while driving. When I start it, I notice a small misfire while I stand next to the exhaust outlet. Nothing too bad, still runs great. Shortly thereafter I started noticing a more habitual missing while driving. Roughly between 30-40 mph and around 12-1500 rpm the truck feel like the driveline is about to pickle fork the truck. If I let off the gas or step on it, the vibration goes away. And very intermittent.
It will only do it when the truck is warmed up. If I only drive about a mile, it won't do it, yet if I turn around and head back, there it is! Now the weird part. I for reasons I won't get into, I left my ignition on and drained the battery. I just replaced it and for the last 2 days nothing. Nt even a misfire. Now today here it is again. I have read all over the forums for this exact problem and cannot find my exact problem. I have replaced the plugs with Autolites and cleaned the coils as well as the boots and applied a small amount of dielectric grease to the top of the plug. The boots are cleaned and not a sign of cracking or wear.
I replaced the PCV valve and nothing. All the plugs looked exactly the same. Light chocolate in color. Not one looked different than the other. I took them out again last week to verify the plugs weren't bad and the new ones all looked the same as well. I cleaned the MAF sensor also. Just cannot figure out what could be doing this all of the sudden. I don't see where anything wasn't plugged back together when it was being worked on and why would a new battery make it go away for a short time? Oh, and lastly, I have a superchips programmer that came with the truck and there are no codes showing and my check engine light has never came on yet.
I have been working through a variety of problems on my 01 AWM with TIP. Im down to two issues that maybe related but Im not really sure. The car idles very rough once warmed up (idles smoother cold). The other is in the way the car delivers its power. Its a un -smooth, kind of pulses at different times jerky and its inconsistent. There are currently no lights on and hasnt been for almost a year. On the last scan the only code that was stores was P01040 (cat). Here is what I have done so far;
Replaces plugs and coil packs Replaced fuel filter Cleaned MAF and TB New N75 valve New DV Cleaned pancake valve replaced 6 vacumn lines with leaks.
Maybe Im missing something here but I think im pretty much down to the PCV system under the intake. Should I just order a rebuild kit from ECS and dig in?
I posted earlier about my car idling roughly, the dealership is now saying it may be my engine or transmission mounts. I have a 2002 Passat wagon with 41500 miles.
View 2 RepliesMy 2001.5 Passat, 143,000 miles, has a problem which has me stumped. In the morning it won't catch. Starter turns over fine. Have to pump gas a bit. After 7 or 8 attempts, it (grumbling) coughs, chokes and then roughly starts. If I let it sit for a few minutes, it smooths out. After that, I have no trouble starting up the rest of the day, and engine runs smoothly and quietly. One buddy sez its the fuel pump; buddy #2 sez its the MAF filter; #3 sez its a sensor or maybe gummed up fuel injection. I used injector cleaner, but it hasn't worked.
View 3 RepliesI have a 2003 Saturn Vue that will start and run then die after 2 seconds or so. I thought we needed to reset the security, but the Security light never comes on. I get both the service and the service with a wrench. I put it on a computer and we get the U2107 code. Can a weak battery be the culprit? I cleared the code and it started then as soon as I turn it off, the code is back and it starts then dies. I'm told that it needs a BCM, but the code indicates that the BCM cannot communicate with the ECM.
View 1 RepliesI went to a local toyota today to have the brake fluid changed and their scantool couldn't communicate with the car.
Now, I wanted to ask a few questions.
1) Is there a separate communication ecu that handles the diagnostics port?
2) Is there a fuse that could have been broken?
To give a few more details, the car is a 2004 gen II prius. It has an lpg system installed. The lpg ecu reads the fuel trims through the diagnostics port all the time.
I am having trouble with my 2000 Excursion 7.3. It died on my wife this morning, but it started right back up and made it home(4 miles). Figured it was the CPS but when i went to hook up the code reader, it just kept saying that i needed to connect it to the vehicle first. I verified that the reader was working on both my other vehicles. Then had to go to work. I wondering if my ECM is going bad?
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