I replaced the thermostat and coolant now the car acts like it's running on 4 cylinders. It's a 1992 3.1. The car ran fine before I just can't figure out what I did. Its real hard starting ,runs extremely rough. And the cooling fans are coming on when cold. Disconnected the battery to to reset the computer. pulled the codes got 45 (rich).
View 6 RepliesMy moms 09 camry has a hard time starting and runs rough. I found out that when my father went to get an oil change, they put in 5W-30. The engine cap on the engine says 0W-20 or 5W-20. The car is at 70K and it has never had any issues, always ran smoothly, always started... until the last oil change. I have looked through the all the service logs and it seems that the last 3 services, they also used 5W-30 oil in the car.
View 14 RepliesI have a 1999 F250 Ford with a V-10 gas engine. It has 65000 mi. Mostly, it starts and runs great. However, when its 10-15 degrees F, it has a hard time starting. It may start and run very rough - then smooth out. Or it may not start- I come back in 2-3 min and it will start. Once it starts and gets past the rough/missing stage, its fine. If the temp hits 25 degrees F, it usually starts just fine.
There are no warning lights and I've taken it to 2 different car parts place and plugged in a computer- but it shows no alarm code. I've taken it to 2 mechanics and told them they had to work on it first thing - when its 10 degrees.
Once the temp reaches 25, it'll start every time. Both mechanics found no problem starting - I'm sure they didn't get to the truck until it warmed up. Its hard to fix something that works fine. I don't know where to look, but I don't want a truck I cannot trust to start. I've changed air, fuel filter and spark plugs.
I'm having a issue with my Chevy Lumina Z34 (1991). When it's cold outside the car has a hard time starting up! I have to crank it multiple times while giving it gas. When it starts and is warm she runs great. I've been recommended to get a fuel injector flush. I also read synthetic oil could work also. It doesn't happen all the time.
View 1 RepliesOur 1997 Lumina with a 3.1 liter engine and about 190,000KMS is having difficulty starting in the morning.
I have changed the spark plugs, plug wires, checked the connections to the battery and put dielectric grease on them. None of that seemed to make much of a difference. The key has to be held for about 5-7 seconds and it coughs to life and then runs rough for about another 5 seconds and the interior lights are dim during this too. After that it comes to life and runs great.
Is it possible for starters to start to weaken? I have never had a starter do that, they have either worked or not. Besides that, I don't know what else could be the problem.
I have heard that these engines can have condensation issues when the temperature straddles the freezing mark, which it has been the last few weeks. Maybe it just needs to get below zero and stay there?
Recently I brought my car for an oil change. They put the recommended full synthetic oil in and when I left the cel starting blinking and the car idling extremely rough. I brought the car immediately back (only drove ~1/4 mi.). They discovered that they put too much oil in the car. Despite their efforts of removing oil and changing filter x2, they could not get the cel to stop blinking or the car running correctly. I brought the car to the closest repair facility with diagnostic capability and they noted the car was still 1qt overfull and multiple misfire, and cam shaft actuator codes were happening. Car was towed to dealership where they diagnosed fouled plugs attributed to too much oil. Oil change facility paid towing, repair and diagnostic bills for their mistake. In the subsequent 2 weeks my car was towed two more times to dealership. Once for going into limp mode after misfires and once for fuel pump dying. Is this all a coincidence or could this be repercussions from botched oil change? Dealership says it is just coincidental.
Car is a 2007 Mercedes clk350 cabriolet.
I recently noticed my 2005 F250 6.0 was running really cool, like barely making it out of the 170's. I guess it is time to replace my thermostat which I just replaced about two years ago. The question is should I replace it with another stock 192 degree thermostat or go for a 200 degree Mishimoto? I found where some where going to that one and it is supposed to make everything run better and the thermostat lasts longer. Any pros or cons to installing a hotter one?
View 7 RepliesI have a 1990 3.1L, multiport fuel injection (NOT sequential FI), which runs very well most of the time. However, when I cold start it runs rough (misfire) for about 1 minute (no throttle) or until acclerated. The is no misfire when running normal, but it might be running a little rough when stopped at a traffic light (in Drive, foot on brake).
I put new plugs and wires on, but it did not affect this problem.
I am not using coolant, or oil, the plugs that were removed were somewhat worn, enough that I expected to notice a difference after they were changed.
I have not yet (1) cleaned the MAF, (2) checked carefully for vacuum leaks, (3) checked for leaking injectors.
Since this is a 1990, OBDI, I can't say which cylinder is misfiring or how the fuel trims look etc.
My main top water hose burst. I replaced it. Car ran hot. Replaced the thermostat, coolant sensor, and 12 volt relay fuses for primary and secondary fans. Still ran hot. Fans not coming on. I tested fans in service mode by paper clip to F and G in the diagnostic scan box. Fans came on, so no blowed motors. Got desperate, so ran a toggle switch to primary fan, so fan would run while I drive. Still, when the car gets hot, after about 5 miles of regular driving, the car huckabucks, and cuts off at slow downs and stops. Really bad in the middle of light intersections.
1992 Chevrolet Lumina 3.1 6 cyl ....
I have a 87 ford ranger pickup, it is running extremely ruff. You can smell the exhaust and it smells super rich and is even spitting fuel out of he exhaust. when I bought the truck the wires were cut on he oxygen sensor, so I put a new oxygen sensor in it hoping that it would lean out the fuel. The truck has duel tanks on it, but the back one is off and it is draining fuel out of the line when it is running. I don't know if the catalytic converters are plugged too, the truck only has 65,000 miles in it. or maybe its a vacuum line leak?
View 4 RepliesSo I was replacing thermostat in 98 lumina 3.1 and use the wrong bolt for the upper bolt on the housing and it broke where it mounts onto the block. Now the housing won't seal over thermostat and just spread coolant everywhere... Is there an easier and less expensive way of fixing or do I have to get a whole new motor?
View 5 RepliesMy wife's Intrigue has had a hard starting/rough idle/rough start issue for a little bit now. On a hunch this weekend I decided to clean out her throttle body. Turns out it was more full of soot than a chimney in February. Nasty black carbon buildup. Took a toothbrush and some throttle body cleaner and scrubbed it out best I could. Car runs great now, very smooth and responsive. Gas pedal use to stick, even fixed that. So I'm a hero, until we realize that her car is still starting hard. Turn the key and the engine turns over no problem, starter sounds good. Once the engine is running it purrs like a kitten. But sometimes you have to crank it for several seconds before it fires up.
View 14 RepliesMy daughter has a 2000 accent , SOHC 12V, I think it's the 1.5L.. It will not stay running when the engine is cold...........after it warms up, or if it sits in the hot sun it's fine................it has 166K .
She said she took it to an auto parts store and had the engine code read, p1123 came up.....
Code P1123 : Long term fuel trim, at idle - mixture too rich..
What do you think this is caused by................ the inlet air temp sensor? I was told someone just replaced the air max flow sensor, that don't sound correct to me, but that's what they called it....probably the MAF sensor....
So the Jetta started running rough, then stalled after starting. Couldn't drive it home so I had to tow it. Got to the house and read codes. It gave me P0135, P0171, and P0321. I researched and saw that the only code of these three whose symptoms included stalling was P0321, so I replaced the Crankshaft Position sensor. Tried starting it, and it wouldn't start at all. I kept at it for a while thinking it would catch, but after 5 minutes the battery was too low to crank. I tested the old crankshaft sensor, and had resistance of about 900 ohms, so it was in range. For giggles, I pulled the new one and checked it, also in range. I put one of them back in, and proceeded to scratch my head. Charged the battery up, and now not sure what to do. I need to do a very close hose inspection, but there are no obvious tears or breaks.
View 1 RepliesI was told that my 1997 kia Sephia needed a new catalytic converter by a very reliable shop. My car had been stalling out and running very rough. They did replace the distributor cap which seems to have increase the overall performance and that same day i had a smog check and passed with flying colors! Why would I still need to replace my converter if I passed smog. My car has only 36k on it.
View 19 Repliesbacked out of the garage fine later in the day went to put it away started hard would not idle and only rev to 2500 .cleaned map sensor,egg valve tested and it works.cleaned the IAC and that works ,fuel pressure is 58psi. starts hard it would idle now it doesn't dies, no code . with 58psi could the pump still be bad? it has 18 pounds of vacuum. where is the vacuum line for the fuel pressure regulator on the motor?
View 14 RepliesI have had my excursion for almost 4 years, I love this truck. but lately we have been having issues that we haven't been able to figure out. First it has about 390K miles on it.
I ALWAYS have to plug it in. it could be 90 degrees out and I still have to plug it in. if it Is plugged in normally it will start fine. but then when I go to drive it, it wont have any power until I get like 2 miles down the road. you can push the pedal all the way down and it will go like 10mph. but once it warms up its fine. if I forget to plug it in, I will have to plug it in for about 2 hours and then it will start hard and run really rough for about 10 min. And it will blow greyish smoke out the exhaust.
But now I'm having the issue of keeping it running. it will start and run for 5-15 min and then quit and I have to wait anywhere from 10min - 1 hour to start it again.
I just bought a 2007 F350 6.0 two days ago, so I was giving the truck a good wash today using a electric pressure washer. The engine bay was pretty dirty so I decided to take some soap and a brush to it. After cleaning it I let it sit for a while in the sun to dry. (engine was stone cold). After it had completely dried out I go in and it cranked right up. I let it idle for a good minute-minute and a half put it in drive and pulled away slowly, right when I touched the accelerator it started running rough, so I popped it into neutral and let it idle for a sec but it was still running really rough so I cut it off not wanting to damage anything worse.
I let it sit and tried to start it again, it just turned over and over. I checked the oil level it was good. So I pushed it back into my driveway to figure it out. I took ICP connector out and tried to start it, just turned over and over. took fuel filter out it was just replaced 2K miles ago it looked a little dirty but not super bad. I put that back in. took icp out again and tried to start it and it started but ran super rough and was dumping black smoke out.
I checked back all ficm connectors and they were all connected. I haven't checked the voltage on that yet, but plan to do that tomorrow. the previous owner had the ficm go bag about a year ago and he sent it off to ficmrepair.com and they fixed it for him. also he had the stand pipes and dumby plugs done as well as the stc on hpop. im kinda at a loss on where to go now other than to check voltage on ficm.
I just replaced my injectors in my 12v vr6 and now having some problems. Mainly having issues with start up. Having to feather the gas to get it to start and still runs rough for a min or two.
View 3 RepliesI recently replaced timing belt and balance belt on my 2004 santa fe 2.4l and now the engine runs like crap and shakes badly. I went over all timing marks again and again and I am at a loss.
View 9 RepliesSo about a month or so ago i had my alternator replaced because my truck wouldnt start and had it checked and replaced well tonite it started rough dont know what to think what/where should i check first?
View 6 Replies