Chevrolet - Caprice :: Buck And Sputter As If Gas Is Being Chocked Off When Going Uphill
Jun 23, 2012
I have a 1975 Chevy Caprice Convertible with a 454 cubic inch "big block" engine with a 4 barrel carb. The car is in mint, original condition with 24,000 miles. Usually the car runs flawlessly, however, lately I have noticed that the car doesn't like going uphill. On level ground and downhill, everything is fine. However, when the engine and car are hot, and I come upon a hill, the car will start to buck and sputter as if the gas is being chocked off. A few extreme times, the car has stalled out completely. Once I role back down the hill onto level ground, the car starts up and everything is back to normal. The problem is not noticeable when the car is cold.
View 13 Replies
Advertisement
2005 VW Tuareg, 67,000 miles. Engine sputtering and bucking - but only under specific circumstance. If I drive the car over 40 mph for even a short distance and then turn the engine off, the car will start back up normally the next time I start it. But if I were to move the car, say, from the driveway to the street then turn the engine off, the next time I start it, the engine would sputter and buck at idle. It would also buck when I put it in gear and run roughly until I hit above 40 mph, then it would smooth out. Thus, the problem only presents itself if the engine is turned on and the car not allowed to run above 40 mph before it is turned off again. The engine light is on, and the dealership says it's cam adjusters not working right,i.e., meaning BIG $$ to fix. Does that sound plausible?
View 8 Replies
1999 Ranger 4.0. I have an issue with my ranger. Sometimes the truck runs awesome.While driving along the truck will miss and sputter and buck, when this happens, I almost can't maintain my speed. Sometimes when this happens if I put the truck in neutral and shut it off and restart it. The problem will temporarily go away. Occasionally it will go away on its own. When it goes away on its own it's like someone flipped a switch and all power is returned and running smooth. When the truck is at idle it depends on the mood of the truck, sometimes it's fine and other times it wants to die. I got to make this truck last awhile longer.
View 7 Replies
"step on gas, truck feel like it is pulling a house, slight buck, but with more gas it moves, it has good presure out the exhast, all wheels are turning freely, engine idles great has lots of power,"
tested, cyl pressure, fine
check engine timing, fine
made sure all wheels spin freely, fine
check all fluids, fine
slight pinging sound can be heard, from time to time from center of truck. I'm thinking torque convertor. Feels like engine is binding only when you put it in gear.
View 4 Replies
My fuel pump is about 5psi low. Is that enough to justify replacing it. The car likes to buck when accelerating. Had the cat converter tested. It was in good shape. Replace plugs and wires a while back. Regular maintenance. 2002 Monte Carlo SS 100k miles.
View 4 Replies
I have a 2003 impala I just bought and it has an intermittent problem. Sometimes when I step on the gas the motor will 'slam'---kinda like if the motor mounts were bad but they look good and it doesn't always do this. Also, if I hit the gas pedal hard and then almost as quickly let off the gas pedal I get the same effect--shutter/slam. I suspect the mounts but they look fine. If I keep on the gas all gears shift very smoothly. Gear shift is smooth thru all gears if I floor it or go slowly accelerate so it seems not to be the transmission either.
View 5 Replies
I have a '95 Chevy Caprice Classic 4.3L Sedan, and it cranks but does not start.This started happening after about a year of the car just sitting in the driveway. Before she sat for that year, she ran just fine.
I am under the impression that the problem is the fuel pump, it is NOT running when the ignition key is turned to the "on" position,this is very confusing because a volt meter placed on the connectors going directly into the pump motor shows 12+ Volts when the key is turned, for about 2 seconds, as it should, however the pump motor does not run. Also, I have already replaced the pump relay AND the entire pump assembly (though the pump I used as a replacement was also pulled from a junkyard vehicle).
The MOST confusing part is, when either of the fuel pump motors that I have are plugged directly into the car battery, they run just fine.
View 8 Replies
The leak looked like it was coming from a heater hose. The individual I bought it from said he fixed it and it wasn't leaking the day I bought it. Upon driving it home...cranked the heat up and windows fogged, switched to defog with no luck. Added some coolant and still the same thing and leak began again.
It smells like antifreeze inside and fog has oily feeling when wiping it off the window. Got in on the lift and no luck seeing where it was leaking from, even with it running. My previous experience with bad heater cores is that it leaks on the inside and smells like coolant... is it leaking on the outside or is it something else?
It's NOT overheating or blowing any kind of smoke. Temp gauge read normal! It's a 4.3L, 1994 Caprice LS .....
View 4 Replies
My Chevrolet 1992 Caprice Air conditioner is chilling but the compressor doesn't disengage when reach the right temperature inside cabin... There seems to be a temperature control or a sensor and I don't know where is it...
View 2 Replies
So I am on my way home after an honest 8, and I make it a mile down the road and goose the old girl a little off a stop light. Well next thing I know we have smoke rolling out under the hood, well it turns out the "smoke" was r134 refrigerant. The guy that recharged it said that the compressor failed and that its common with retrofits because 134a runs at a higher pressure.
Now I don't need a/c, and I might just leave it as is, but it would be nice to have the old girl working 100%. It also turns out that the front seal of the transmission is leaking, I am debating whether or not to just have the transmission rebuilt. it shifts fine but its gotta come out anyway. Its a 700r4 and the trans guy recommends stronger 3-4 clutches and a shift kit to make the holding pressure higher.
View 13 Replies
For the last couple of years, I've noticed the air flow changes from the floor to the defroster under hard acceleration. Not a big deal. This morning (7 degrees) the airflow was changing under light to moderate acceleration. It's a vacuum problem, but is there anything in particular I should be looking at? The car is running fine, no issues with stalling or hesitation.
View 4 Replies
I put a new battery and the fuel tank is full but the car always has trouble starting. the other day i sat trying to start it, pumping the gas for 10 minutes or so. Nothing. I noticed some dripping under the car but it looked like coolant. Could this be something bigger? I have a new battery in. Do I have to go and start it every week and let it run for a few minutes? Any portable car jump start?
View 15 Replies
2000 Silverado 5.3So I recently replaced my head gaskets. And I think I'm finally done working on this truck when I took it for a long drive and it did a little sputter and then backfired. I thought it was nothing since after the backfire it went right back to running perfect. Then again another day it did it again. Sputter. A loss of power and the BANG backfire and it was back to running like new. At first it was very rare. Maybe once every other day. Now its doing it 2-3 times on a normal drive to work. And it will idle rough during one of these spells as well now. When it starts to sputter and lose power I can throw it in neutral and rev it a few times. Once it backfires it's back to running like new. Only codes I'm getting are o2 sensors but I have no cats. Just straight pipes from headers to a turn down exhaust. I was thinking maybe a fuel regulator but I had replaced that just a few months ago. Could it have already gone bad? I changed my fuel filter not long ago and cleaned injectors and rails when replaced head gasket.
View 4 Replies
I was driving my Chevrolet Silverado 1500 4 wheel drive single cab when it sputtered a couple of times I came to a stop light and the car stopped I tried starting it to no avail. I also noticed I did not hear the fuel pump run as normal when truck is in accessory position . When my buddy showed up I had him try and start the truck as I banged on the gas tank and it would run when I stopped so did the truck...
View 2 Replies
5.7 vortec has like a dead spot in gas pedal. No power really bad going up hill. New gas pump, tps....
View 3 Replies
I have a 2002 Chevy Impala driving it in the city of Chicago. It's recently had the oil changed, and the transmission fluid flushed and filter replaced. This car was mine before I went off to school, and I meticulously maintained it for three years, and then my step sister inherited it. She drove it for two years, and then it sat in the driveway for a year and a half. It's got about 175,000 miles on it.
Problem: Every time I start to accelerate past 25mph and get around 2000rpms, the car starts to give out, sputter and jerk. It starts to drop off right when it should be shifting to second gear. When on the highway, even if I floor the gas peddle, it won't accelerate normally, but instead just crawls slowly to higher speeds.
It will eventually reach the higher speeds, but it takes about 5-10 minutes for it climb up from 25mph. I don't know enough about this level of car trouble to make a diagnosis myself, and would like an estimate of the cost for repairs. Also the car is getting around 19mpg on the highway, which I need to improve if I'm going to survive the $4.50/gal of Chicago gas. I'm hoping that fixing this problem will take care of that as well.
View 3 Replies
I have an '02 Tracker and I've noticed if I have several accessories running, that my engine will start to sputter and come to the verge of stalling when I come to a stop. It happens if I have the heat/air and radio or charging my phone on together. What is the cause and/or remedy for this? I've changed the alternator a few yrs. back, but it still continued.
View 2 Replies
My brother and I both drive Chevy S10 ZR2s, 2001 and 1998 respectively, and they both have the same problem(s). Initially, the first minute after starting, the trucks will backfire and hesitate, which is most apparent when traveling up hill because if the engine hesitates when traveling up hill, we don't go anywhere. However, after this initial minute, the truck perform just fine, mostly.
The only time that they will not perform well after this initial minute is if we go to pass someone on the highway and need to accelerate harder to do so. If we do this, the same symptoms described earlier return, but they will not go away unless the trucks are shut off and allowed to "rest" for a few minutes. A similar problem was described in last week's show, but that was for a carbureted S10 and I'm pretty sure that ours are EFI.
View 1 Replies
My pickup always bogs down going up a grade, seems like its flooding out and it starts running real rough and vibrating bad, I have to let off gas and pull over .
Been to shop several times, no one seems to know what's causing it.
View 11 Replies
I have a 2004 Chev Cavalier with a 2.2. Ecotec OHC. Lately the car has started to stagger on acceleration. Particularly when going up hill. The weird thing is, it only does it after it's been running for 10 or 15 minutes. Up until that time it runs smoothly. But when it happens it feels like the engine bucks. Or hiccups. If I stomp on the gas the car will either stall or kick in and overcome this. When I'm driving down the road at a steady speed, or when I'm sitting still the engine will buck in the same fashion. Not steadily--intermittently. Once or twice every fifteen seconds. But it's getting progressively worse.
Now if I launch out of an intersection the car might even stall. When this happens I just turn the key and she fires right up again as if nothing happened. No "Check Engine Light" or trouble codes showing up in my Scangauge. I replaced the fuel filter just as a preliminary measure but that didn't solve the problem. I had the fuel pump replaced a few months ago as well but that ws before this problem occurred. No other parts or pieces replaced. Fuel pressure regulator? Spark plugs? Injectors?
View 5 Replies
I've taken my Traverse in to the shop twice now and they can't seem to find the problem - it misses going up gentle grades, especially when on cruise control and higher speeds. First they said timing belt, then spark plug wire, but it's happening again and I'm about to take it back in. The last time they test drove it and they said they couldn't duplicate the symptoms but I think they didn't take it out for long enough of a test.
View 4 Replies
