LeSabre :: V6 Engine Missing Under Load / Also Idles Very Fast On First Start
Dec 5, 2014
1987 LeSabre v6 engine misses under load. It is a "hard" jolt, miss that happens under slight load weather warm or not. Engine also idles very fast on first start. Wondering if the problem is electrical or vacuum related (or both?). Do not think it is fuel related as pump and filter were replaced a while back. Vehicle has also stalled with difficult restart once in the past few days. Not showing any codes.
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I have a 1991 S10 with a 4.3L V6 TBI that recently began having trouble cold starting, meaning that at a mere 40F I can crank it over and over and it will not catch. If I plug the block heater in for at least an hour, it usually will start, but at a very low, very rough idle. Once it has about 30 seconds or so to warm up, it will then idle TOO FAST at 1500 rpm, and stay that way for the first few miles of driving, which makes it rather awkward to drive, being a 5-speed. Once its been driven awhile and fully warmed up, it runs normally. (I'm running a 180F t-stat.)
The IAC valve, block temp sensor, and TPS sensor, were all replaced last year, so I'd find it hard to believe that one of those could be the problem. I put Heet treatment (red bottle) in the fuel, changed fuel filter and reset the computer. (Although it's never given a trouble code.) The problem is still there.
My local mechanic says replace the ECM, but he hasn't actually diagnosed that as the problem, so I think he may just be taking a wild guess. (He hates OBD1 systems with a passion!).
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I have a 1997 LeSabre with 180000 miles. I can drive the car for 4-5 miles before it stalls and then dies. the car will start to idle fast, then bottom out a couple of times before it dies. It also makes a horrible noise under the hood and sounds like the rods are all clanging together. Once it dies, it will not restart until it has sat there for 30-40 minutes. After sitting for some time, it will crank right up and then repeat the process again. My oil pressure is off the chart high and it stays there all the time. Does this have something to do with the problem of is that another problem all together? What is causing my car to die like this and how do i fix it?
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I have a 2000 buick lesabre v6 3800 series 2 engine and every now and then when accelerating it will miss out, I don't know what it could be?
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we just replaced the intake manifold and also put on new spark plug wires and plugs. now the engine is missing but only after it warms up. i double checked all the wires and connections and they looked good. is there something obvious that i should look at since it is still doing it?
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I have a 98 Mountaineer, 5.0 auto that I just picked up. It takes some extra cranking to start it, and then when it does start it idles like it's missing. Also, the throttle response is not good. I have two codes that come back as soon as they are reset. P0340 (cam shaft sensor) and P0350 Ignition coil malfunction. I have been reading threads here saying that sometimes the P0340 can be the alternator it not always the sensor.
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My 1995 LeSabre (3800 v6, 62K miles) has a stalling problem, no engine power, but still has electric. It happens randomly and intermittently. Most times it will restart but has been increasingly difficult to restart. The only indicator prior to stalling is the speedometer "surges" and then the loss of power. Dash lights come on (oil, voltage, CEL). Sometimes the CEL will flash in time with a fast clicking that I believe comes from the fuel pump relay under the right side of the dash. Until this clicking stops the engine will not restart. I have replaced ignition control module, and then the crank and cam sensors. Replaced PCM with rebuilt and it was worse (defective?) and put the old one back in. Mechanic can't find any codes to determine what is causing it to stall, except possibly PCM is bad.
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I have a 1995 ford thunderbird 3.8 l. I changed the heads according to a chilton book. The car ran well for approximately 2 weeks and all of a sudden it started Idling high. I turned the idle screw all the way off and no change.
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Truck idles a little too fast? I don't even have to press on the accelerator to back-up and out of my driveway, and it's a little bit uphill. (2012 Screw, 4X4 Ecoboost, 3.73) It goes into the shop in the morning for the modification to the intercooer (I think?) and a reflash of the computer.
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This problem started out about a month and a half ago. It started missing slightly. Then I noticed my gas was going down very fast. So I started watching it, A five mile trip used a eighth tank of gas. It keeps getting worse. My husband popped the hood and was looking to see if he could spot anything.( Couldn't smell any gas) He noticed the purge control solenoid wasn't making the noise it normally does. He took it off, cleaned it and put it back on and it started working again. ( NO CHECK ENGINE LIGHT WAS ON AT ANY TIME ) It did it again.
So we called the dealer, made an appointment, took it in, The dealer service guy said he Scanned for codes PO443 Performed Diagnosis Found EVAP PURGE SOLENOID Sticking Open. He said everything else checked out good. He ordered the part, called said it was in, went back, installed it. Amazingly IT"S STILL NOT WORKING. Now, I Do Not TRUST the dealership. It Stalls and misses and spits and sputters when it is in park and you give it the gas. There's times when I am at a parking lot waiting to get out and I start to pull out it trys to die on me.
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I have a 99 jimmy replaced rotary button, cap, plugs, wires. The truck doesn't seem to run right. It idles fine but when in load it starts to sputter a bit. Going down the road between 2000 and 2500 rpms the tach jumps a bit. Now if I put it to the floor the truck runs out fine.
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I have a 2001 Buick LeSabre (Limited), with 101,000 miles. It runs great and a very reliable car except:
After going for some driving in town during a warm day (60 F or above) doing business, the engine gets warm but within normal temperature range, and after making a stop to get groceries for eample, I have to be very careful when starting the car again. If I let the starter go for more than a quarter tourn (crank), the engine gets week and acts like it is flooded with gas, just like when we had carburators in old car and it dies after a few shakings.
So I have to wait for 15 minutes at least before I restart the engine but doing so I have to be really careful again not to let the starter crank for more than a quarter turn. However, this problem does not happen during cold weather days (say below 40 degrees F). What is going on with my car?
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1985 380 se runs great until engine warms and put under load. Replaced fuel pump, fuel filter, fuel pump relay and the gasoline...
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I have a 2000 hyundai accent 5 speed with 76k and a 1.5. the spark plug boots arc on all 4 plugs and can see a light blue line down the center of the wires also. But while idling you see nothing till u snap the throttle. Also driving while its under load you can really feel the miss in 3rd gear. Ok here"s what I've done I cleaned up all my grounds on motor and body ,also cleaned spark plug threads. i replaced wires with 5 different brands including factory wires and same thing. I've tried all kinds of different plugs from regular coppers to iridium and changing plug gaps with no change. the coil was replaced,crank sensor changed and does same thing.
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My 4.2 liter F150 suddenly started missing under load. A little background: It is a late 2003 and has 75k miles. It has been in my family since new, and I have had it for the last 4 years. This truck is as stock as they come, and has been well maintained.
On my way to work yesterday, it began missing. Not bad at first, but got worse. It misses while under load and under acceleration. The "check engine light" never came on. I have not put fuel in in several days, and it ran fine until now, so I doubt it is bad fuel. I started the engine after dark and looked for arcing. None visible, and I even sprayed the wires with a mist of water. I pulled the plugs and they all look normal. The gaps were all way too large, so I regapped the plugs to .054". I pulled the coil pack and it checks within range with my VOM. Can the coil pack be the problem even though it checks out on the bench? Can the large plug gaps have contributed to a coil pack failure?
Where to start. I HATE just throwing parts at this thing, and I don't like wasting money... If I let one of the auto parts stores run a scan, will it show a code even though I have no check engine light? I used to think of myself as a pretty good diagnostician, but then again, when I used to spend a lot of time under the hood, those cars had points, condensers and carburetors...
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This 2005 LeSabre with a 3.8 v-6 ran fine but had a marginal battery. Then the key got left on overnight leaving the battery totally dead. After jumping the battery and letting it charge, the engine cranked fine but refused to start. Haven't had a chance to check for fuel or spark. Why would a dead battery trigger this no start condition?
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I have a 2008 XL 4.2 auto trans with 60,000 miles on it. We purchased a new travel trailer with a total weight just under 5000 lbs that we pulled for about 2000 miles this summer. On the last trip we noticed the truck was missing pretty bad going up hills or under load. After we got home I started to notice the miss at times even not towing. Did a tune up with Motocraft plus and wires and seems to still have a miss at an idle and very low RPM. What would be best to check next?? Would Coil be logical?
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Have a p0401 code which I need to diagnose and solve. However, I don't believe the symptoms are indicative of the EGR system. Its a 1999 4.6L auto approximately 200k miles. Truck runs fine until it warms up, and then occasionally it begins to act like its missing under load. steady state on the freeway it may have an occasional miss, but put a load on the motor and the miss becomes real bad. This doesn't seem to me to be symptomatic of a P0401 code, but I don't really understand the EGR system enough to be sure. Searching on the forums for other p0401 codes doesn't seem to have the same symptoms.
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I have a 2001 ford taurus. just changed the engine with a used engine has 130k, did tuneup changing all spark plugs, wires and distributor cap. Also changed the 02 sensor upstream. And the check engine light remains on. if i start the car and it idles the check engine light flashes. but once i drive it, it just remains on. brought to the mechanic and he put on the machine and it reads that the problem is the 02 sensor upstream and the spark plugs misfiring. my mechanic is lost not sure what the problem is. someone told me it could be the manifold gaskets and pedlum gasket.
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How to reset the Anti Theft on my explorer? The light is flashing fast and the engine won't start. Without the anti theft being reset the truck won't start. Been checking around to find an answer but can't find one...
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A minor but persistent (year-long) rough idle on my 1991 240 has quickly turned into a Cold Start Nightmare over the past month:
SITTING HOURS OVERNIGHT (50 to 60-degree temp. overnight) - When I attempt to start in the morning, the engine idles high for 3-5 seconds and then immediately dies. To successfully start, I must keep pressing the accelerator pedal at least half-way down for 2-3 minutes. The engine sputters, almost backfires, shakes, lopes, almost dies, etc. After 2-3 minutes, everything runs just fine.
WARM ENGINE SITTING - Once the engine is warmed up, it will consistently start without problems. Still a slightly rough idle, but OK. The car does not die.
I have changed the battery, coolant temp. sensor, and spark plug wires.
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