My fathers 1990 GMC Sierra 1500 Pickup Truck 4.3L runs fine when it is cold but as soon as it warms up it starts running rough then stalls and won't start. There is no spark when it dies. As soon as it cools off it starts back up and runs fine till it warms back up.
View 2 RepliesAs the title says, the 2001GMC Sierra 2500 truck has been acting up lately. This usually happens when the truck is in motion, doing about 40 mph or so. It will quit, i have to pull over to the side of the road. And it usually starts right back up. This has been going on ever since I had the fuel pump replaced about 3 months ago or so. It was doing it once every two weeks, then once a week, then once every other day. Then it stranded me at the store before xmas. Right off I thought it is the fuel pump being intermittent, and just getting worse. I am not so sure though.
My mechanic will warranty it, but would rather not have to if its not the problem. He would rather have the truck die and stay dead, and test out things from there. There in lies the problem. The pump works, I can hear it power up, and if the truck stalls, it starts right back up. One more thing. If it does not start immediately, and I don't drain the battery, it will start in an hour or less. It will not just stop working for an extended period of time. There is no check engine light on btw. No codes come up while its on the computer. I don't drive it except in the driveway to plow, for fear of having to have it towed. It works though as i have a really long driveway.
]I recently bought a 1990 ford ranger with a 2.9 @187,000 miles. That being said I went through and changed a few vacuum lines, the oil, air filter, pcv/grommet, and fuel filter.
The problem is it hates to start. I could crank on it for 10 seconds and not a single thing. Sometimes if i turn the key to the off position, wait a second, and try again, Ill get the truck to fire. When it does fire up it just reeks of the lean exhaust. It also gives me some hesitation when I rev it. I did a fuel pressure test (KOEO) last night and it gave me 32 psi and within a minute the needle fell to about 25 psi. I hear the fuel pump run for only 2-3 seconds too.
I've already pulled the MAF off and cleaned it, replaced the TPS, and did a fuel pressure test. The fuel filter is brand new
Car has 252k miles runs ruff after engine warms up, looses power, if I give more gas, car will sputter, but rev up to 5k engine smoothes out. This situation constantly comes and goes.
View 3 Replies1990 Toyota Camry.4cyl Starts normally drives about 50 or so miles and dies. It will not immediately restart. Turn off the ignition key for a few minutes and it starts back up and may travel 1 mile or 10 miles before it dies again. It appears after the first failure the interval between stalls gets shorter and shorter until the car is left alone over night. the next day i get 40-50 miles and it stalls. I loosened the fuel line at the filter under the hood and during the period it wont start there doesn't appear to be any fuel pressure. Is there a more acurate way to test if the fuel pump is failing or the sensors that control it are?
View 4 RepliesWe've had two problems within the last week with our 2002 Sport Trac (4.0l SOHC engine w/167,xxx miles). They may be unrelated, but I suspect there's good change they are. Both incidents happened while my 16 yo daughter was driving, so there's only very limited info on what happens. Both times, when I get there, it starts and runs fine. There is no CEL.
The first time it apparently stalled as she neared her destination after driving only about 2-3 miles at 35 mph or less after a cold start. She was slowing to pull into a parking lot and reported the dash lit up with warning lights, no power steering assist and no power brakes and no power from the engine. When I arrived it started and ran normally. She had fulled up the day before after two days of heavy rain, so I suspected water in the gas. I drove it more than 200 miles within the next 24 hours under a variety of conditions and filled up at a different station. I experienced no problem what-so-ever, and didn't bother adding any dry gas.
Then 5 days later (still on my fill-up) when she tried starting it after sitting all day, she reported the engine started but ran rough before stalling and never idled normally.
Doesn't the fact there's no CEL eliminate a lot of the upstream part of the control system......like sensors and actuators? This leaves things like the downstream parts of the fuel and ignition systems. I.e. from the fuel tank / pump to the injectors and the downstream parts of the ignition system.
What are the possible culprits? Fuel pump, fuel pressure regulator, injectors, ignition module, spark plugs, and....... what else? (I'm not that familiar with what these engines have) And of the possibilities, what are the most likely causes.
We have been having issues with my son's 97 Sierra running rough when it is cold/damp. It feels like the engine is missing.
Today, which is warm and dry, it started running really bad and it was all he could do to limp it home. It seemed like it wanted to idle fine but when he tried to rev it up the tach would start jumping and it seemed like it was missing.
Could this be a bad cap/rotor? The engine has 200,000 miles and we've never changed the cap/rotor. I changed the plugs/wires probably 100,000 miles ago.
I have a 1994 gmc sierra 4x4 5.7 with a rebuilt engine 2 yrs ago and it has started having a rough idle(surging/dies) I have replaced fuel pump, fuel filter, maf sensor, iac sensor, tps sensor, top half of the tb and injectors, distributor, ignition module, plugs and plug wires and still no change. Yesterday I cleaned the iac and seemed to straighten up a little but then got in it to go to work today and it was back to running rough again and seemed worse. I am at a loss.
View 4 RepliesI've got a great little 1991 Civic DX, 1.5L manual. It's never let me down and I love working on it.
Stalled on the highway a couple weeks ago and I couldn't get it re-started. Over the years, it's had a bit of a personality where it chugs and occasionally stalls at a low idle, or when very slowly accelerating from a stop. If I'm sitting still, I'll turn the key to full off, give it about 30 seconds, and it'll start right back up. For whatever reason just re-starting without turning off never seemed to work.
So since it stalled on the highway and I wasn't able to get it started at all, here's the list I've replaced or completed:- main relay- fuel filter- plug wires- spark plugs (the old ones were due, but not overdue, and all four were pretty fouled with burned oil and had oil in the wells)- spark plug well o-rings and valve cover gaskets- and fully charged the battery
At this point, if I let it sit until it's cool, it'll start right back up with no trouble. Then once it warms, it starts to run a bit rough, eventually chugs, stalls, and then I can't get it started again - spins a few times, then kinda sticks, then spins a few times, and kinda sticks again.
I 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 1990 Chevy Silverado with 5.0 liter, 45k miles has started a problem that the guys in my diesel repair shop don't know what to do. Last week it started to run rough, hesitating and lurching and not accelerating smoothly. It idles fine, or pretty well, but just doesn't run smoothly with any kind of acceleration. I drive it back and forth to work just 1.5 miles during the week. I took it on vacation a week before, so it's not from lack of long trips, it ran fine.
A guy at my diesel repair shop put it on his Genesis scope and all it would code is the O2 sensor showed lean, but we could see it switching from rich to lean and so on. I thought vacuum leak, but couldn't find one. PCV valve is good. EGR valve is ok. I changed the fuel filter yesterday and thought it ran a little better, but now has gone back to the rough running. What I can do myself to diagnose this? I do have all the tools and shop.
1990 Ford Aerostar. When I start runs really rough and has excessive fuel consumption and the exhaust smells like gas and has a misfire my friend says its the coil pack going bad im not sure. I love my ford aerostar dont wanna get rid of it.
View 5 RepliesMy wife has a 2002 Camry V6 SE with about 75k miles. Over the past 6 months the car has developed a problem. Every so often, say once every 2-3 weeks the car will start fine, but after driving for about 5-10 minutes, will start running rough and stall if I stop for a light. It will start again, (with a little effort) and will stall again at the next stop and so on. I can pull off the road, wait 10 minutes and the car will then run like a Swiss watch until the next episode.
I have taken the car to a respected mechanic and he sees nothing obvious wrong and there is no record in the car's computer of any problem. The last time this happened the car had been on the road for about 20 minutes before the stalling problem occurred. I kept the car going at idle by putting in neutral and increasing the throttle.
After we arrived home, the car cut out when we made it into the garage but a rotten egg-like smell was in the air in the garage. After about an hour, the car stated immediately and ran like a top. That was about a week ago and no problems since. I have read in the threads about EGRs Throttle bodies etc.
2000 Sierra 1500, 5.3L engine. When he starts it in the cold (below 40 degrees) at first hits 1000rpm, then immediately drops to 400-500rpm. The idle is rough and wants to die if he tries to drive it. However after 10-15 minutes and the eng warms up, its fine no problems at all. There is no codes, so the scanner we had didn't tell us anything. He had cleaned the TB and intake system with cleaner, no dice. He also disconnected the IAC while it was idling rough, that didn't change the way it ran at all. We would like to toubleshoot it more before we start throwing parts at it.
View 1 RepliesMy 90 lumina euro 3.1 has idle surge after it warms up. fluctuates between 600 and 1200 rpm when in drive. When you first get on the throttle it wants to die. Once you get past that it runs smooth while driving. Ive also notice that it tries to "buck" when its at lower rpm and barely on the throttle while pulling.
I can't seem to find any vacuum leaks, has recient tuneup, had a egr code and that has been replaced. I've cleaned the throttle body also. Previous owner had intake gaskets replaced as well as fuel injectors, fuel rail, fuel pump.
I have an 03 F350 with the 6.0L. It has 210,000 miles on it and the injectors are beginning to be suspect. Its very hard to start when its cold, smokes and runs like crap untill it warms up.
I've found a set of injectors out of a 2005 truck with 8000 miles on them. The truck was overboosted and blew a head gasket.
Now finally to my question.....Can the overboost damage the injector? Would it be safe to buy these and install them or rebuild them before install or just leave them alone?
So I have been unable to figure this problem out and so had my mechanic, I am starting to think this car is cursed. I have an 07 outback with about 54000 miles on it, a few weeks ago it through a P0303 for a misfire in the third cylinder, thought nothing of it, light went off in the next couple starts and the car was running great. Had this happen a couple more times but only after the car had been out in the rain. Each time the problem went away. Now the car has sat in my garage for four days, I got out to start it and get an extremely long crank but no turn over. Try again and after 5-6 seconds car turns over but is running really rough and stalls out. Disconnected the battery checked hoses, everything looked normal, reconnected the battery and now the car is running fine.
View 3 RepliesI have a 1990 buick lesabre motor is a 3800 and it runs fine until the motor warms up and then when i shut it off it won't restart for about an hour after i shut it off. It's not over heating it has a new fuel pump.
View 4 RepliesRecently my 01 Jetta 1.8T has started to not start like it should. Say every 4th or 5th start it cranks and cranks, I see the tach eventually flick a couple of times and then it finally fires up. It's also stalled while I'm driving, say when I stop at a light but will usually start up again ok.
After the not so good start I get the impression the car is kind of surging while driving - like a fuel supply issue although maybe the fuel pump has nothing to do with supply after starting?
So anyway my thought is perhaps fuel pump issue? I decided to try and search for my issue or fuel pump issues but it talks about things that happen when you open the drivers door which in my case isn't working properly (i.e., I believe it is a DLM as my windows sometimes all go down and I don't get any chime or door light when the door opens).
So just wondering if based on what I'm experiencing if fuel pump sounds likely and perhaps what further tests I should run. My battery is new and the engine does crank pretty good if that eliminate it. I guess I should be thinking fuel filter perhaps also.
1990 Volvo 760 4 cyl. Turbo. Drove the car to work, everything fine. Got off work, car wouldn't start. Cranked but wouldn't start. It was getting spark. Changed the fuel filter, it ran perfect for a month. Drove it to town a month later, shut it off, then trying to start it, would crank and crank eventually start but run real rough. We got it home....barely.
Replaced the fuel filter again. Still wouldn't run right.
Replaced the fuel pressure regulator. Same problem.
Replaced the throttle positioning switch. Same problem. Replaced the air control valve. same problem.
Found out that this car has an on board diagnostic doo hickey.
Found out how to check each sensor and component individually.
All sensors and components are working. Checked both fuel pumps and they are working. If I unplug the air flow sensor and the air control valve sensor, I can start the car using starter fluid and it will idle all day with out missing a lick.If I plug in either one of the sensors, it will kill it immediately.I don’t know what else to do to make this machine run.
My truck out of nowhere will start to idle low and die when put in reverse or drive then on other days sometimes it will start and run right. I got the code 44 witch it could be a o2 sensor but tomorrow I'm getting my catalytic converter took off and run straight pipe do I still need a o2 sensor without a catalytic converter or what's causing lean exhaust?
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