1990 chevy silverado 4x4... My truck stumbles when you start it and within 5 seconds or so clears up and runs smooth.. I changed the fuel filter , still the same result.
View 1 RepliesJust got a 1990 k1500 with the 4.3 v6 and 5 speed and it backfires. A buddy told me it was shooting flames out of my exhaust. What does that mean?
View 7 RepliesMy truck hasn't run for over a year and no one seems to be able to tell me why. The fuel pump supposedly has 10 lbs of pressure, it has new fuel pump relay, new throttle body, and probably more new things (can't remember exactly). It will start up normally and then it will act like it's not getting fuel and within seconds die. If I keep my foot on the gas and kind of pump it (I know it's EFI) it will try to keep running, but will die, and it really gets rough toward the end like the whole engine's going to fall out. The truck has 300K+ on it but the engine was replaced about 10,000 miles ago. It still has a lot of original equipment.
View 14 RepliesDoes a 1990 chevy truck have a fuel regulator, 5.7 efi? if so where is it located?
View 1 RepliesMy 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.
1992 WT pick up 263,000 miles had new head gasket installed valves lapped and tune up it was doing it before and does get better when truck warms up, but still can hesitate at times. When cold you have to feather gas pedal to truck accelerating, you can hear truck motor pop through throttle body but will continue to speed up.
View 2 RepliesI have a 1990 chevy K2500 5.7 350 tbi with 255000 miles on the body and engine. transmission replaced at 200000. When I drive long enough for the truck to get hot (i.e., 10 minutes or so) if i put it in reverse to back into a parking space or my driveway, it just shuts off. i have had fuel filter and fuel pump replaced but what could cause this? it will stay on if I don't drive long enough to get hot.
View 1 RepliesMy truck is having a problem lately where it will suddenly die while driving. It feels like it loses either spark or fuel and happens about 20-30 minutes after I drive it. Once it dies you can turn the key off and restart it and it will fire up and run again, for how long I'm not sure because I'm almost home about that time. It has a fairly new fuel pump, 2 years old, a fuel filter the same age, new cap and rotor, new air filter, probably could use some new plugs. I replaced the TPS with an older one that I had laying around and had no change in performance. I get a 34 and 43 code (MAP and knock sensor) when I do a diagnostic on it.My question is do you think a MAP sensor or knock sensor would cause this kind of failure before I go out and buy them? I'm leaning towards the MAP sensor but not sure that it would have this kind of an effect on the engine.
View 4 RepliesI have a '96 Chevy Silverado that twice (in about as many months) has had some trouble starting. When I turn the key the engine starts to crank, then there is a loud pop and the engine stops. When I crank it again the engine will start, although more slowly than usual. What could be wrong?
View 19 RepliesMy 1995 chevy c1500 cuts out at idle or the moment the brakes are applied to shift into drive. I replaced the passenger wheel cylinder and bled the brakes and it ran fine for a few hours, then the idle problem stated again. I have check the map senor and a few other electronic component as my mechanic said the problem " might be electrical."
View 6 Repliesi have a 1982 chevy 1500 4x4 with a 700R4 and it has never give me any problems at all has always shifted firm and smooth goes instantly in to drive and reverse. One day last week i got in and the truck will not shift in to second actually wont come out of first the reverse still works fine and the first is still fine it does not slip or hesitate at all. I pulled the gear cover off and can spin it!
View 8 RepliesSo I used my 2000 silverado 1500 to remove a willow trunk from my yard. 4 Lo, took a bit of work but I tried not to overdo it. Now, truck sputters when accelerating. Once it gets going it's good but the startup is sputtery and bucks a little. What did I do?
View 1 RepliesMy truck just recently started to vibrate like it is going over rumble strips. It only happens over 40MPH and sporadically. It seems to happen when I'm just giving enough gas to maintain speed. Once it starts if I let off the gas or give it more gas it goes away. It reoccurs anywhere from 20 seconds up to a few minutes. I'm afraid my tire is going to fly off or my drive shaft is going to drop. There is no unusual noises or thuds if I go on and off the gas and the universal joints seem tight, and there is no vibrations from on steering wheel.
View 10 Replies1991 chevy silverado 1500 4.3 ... Cruising at 55 down highway truck died for 2-3 seconds only to refire itself. After doing so for a few days it wouldn't start at all. Changed fuel pump,fuel filter and all spark plugs. Now runs fine until I shut it off briefly. Then it stalls on me on 3rd,4th and 5th gears. Bucks badly. Is it a fuel issue or something to do with starting it while it's warm. Also it runs good with the check light ON. Soon as it goes off it starts shutting off and refiring itself when I give it gas.
View 1 RepliesSeveral years ago I had to replace the fuel pump - truck had about 100,000 miles. Within the last 4 - 5 months I have replaced the fuel pump twice and just today (about two months since the last replacement), the fuel pump has failed again. That has been the pattern now for the last several months. I have had the work done by one of the reputable car repair shops in town - they have also done work on my 2004 Impala with no issues with the repair. There must be something else going on besides just the fuel pump going bad. What would cause so many fuel pump failures.
View 16 RepliesI have a 1998 Chevy K1500 4x4 which is experiencing issues on two fronts: brakes and general operation.
For the brakes, over the last couple years, we have replaced just about every part of the system, including - master cylinder - calipers - brake lines. In addition, in the last week, I worked with a local mechanic to bleed the lines and he turned the rotors as well. The result is that while the truck does stop, the pedal height is still really high and feels like there's no pressure until the pedal's nearly to the floor. I get the feeling that if I needed to stop abruptly or at a higher speed than 35mph, I wouldn't be able to. I'm not sure what needs to happen next.
As to the general operation: the first time I start the truck on any given day, it fires up and runs smoothly. If I take it across town, however, and put it in the park, it gasps, sputters, and dies. It is then very difficult to get the vehicle to start again--usually, I have to push the gas pedal all the way to the floor and grind the starter until the engine turns over. After that, I have to keep my foot on the accelerator for 15-30 seconds at around 3000 RPM as the truck shudders and lurches, until it smooths out. Once I put it into drive or reverse, however, it dies, unless I am quick to push the accelerator again. Until recently, the truck had only been driven four times in the last two years or so. So far, I have: - replaced the air filter - added fresh gas (to the old) - added an engine treatment (Sea-Foam) Everything I have done is stuff that needs to be taken care of anyway, and I want to take care of all the little things before I take it to a dealership to have a full diagnostic run on it. I also plan to have an oil change done on it this week.
Six months ago we purchased a '91 Chevy Pickup and 3 months ago the truck started to "sneeze". Sometimes while accelerating the truck makes a "toot" noise from in front of the driver under the hood, and with the noise I have a momentary loss of RPMs. This can happen a number of times in a row, making pulling out on to busy streets difficult and dangerous. Most of the time, I take my foot completely off the gas and then re-apply it, and the issue goes away. It happens both with a cold engine and a warm/hot engine. This problem started when it was cold out (around 10 degrees Fahrenheit) and the mechanic I talked to about it thought it was the E10 87 gas I was putting in.
I switched to a 97 octane/no-ethenol fuel and the problem went away, until about a week ago when our temperatures finally broke 50 consistently. The problem is back and with it is a minor fluctuation of RPM when idling in neutral. The truck also created a new symptom, I was driving at about 50mph and the truck acted like it slipped on ice... I had evened out my speed and the truck seemed to start coasting then got back to driving at speed, it jerked the whole truck, like driving over a patch of ice. I don't know if it has anything to do with the original problem but all symptoms may be the same thing....
The truck is a 91 Chevy 1500K, 5.7L V8 and has 74,000 miles (mostly highway towing). It had been sitting 2 years, not really being used, before we bought it. We had the fuel injection system cleaned when they did the oil change, right after we purchased the vehicle.
1090 Lumina Sedan 3.1 ... First time it had starting issues Recently. About 2 months ago my lumina's engine would die when i pushed down on the gas pedal. After 2 days of trying to fix the issue it wouldn't start at all, i replaced:
TPS
MAP/MAT Sensor
Fuel Filter
None of these worked so i sent it to a shop, they replaced:
ECM
Multi Port Injection (All 6 Injectors)
TPS (even though i had just installed a new one)
Serpentine Belt (it broke when they were test driving it after the Repairs were done)
The car would not start even after they replaced the first 3 parts on the list, so the tech looked further at the engine and found frayed and open wires, on the bottom near the front side passenger door, he repaired these wires and the car started and ran.
The only issues i had after their repair was a rough idle while braking and/or when i was at a full stop, the rough idle went away after a few days of driving.
((Current No Start Issues))A week ago i had what i am guessing is a few electrical issues: Speedometer Twitching and then dropping to nothing while driving, temp and oil light popping on and then off, when the engine was at a good temp and the oil was fine when i had checked the day before.
I went out a few days ago to run some errands and on my way home i turned a corner and when i put my foot down on the gas pedal the car just went "Put-put Put-put" every time i pushed the pedal more than a 1/4 of the way down. i reach a stop sign and being i was in the middle of nowhere and no one was coming down the road for miles i braked slightly and went past the stop sign halfway through my turn the engine died and i coasted to the side of the road, i got out and checked the engine, i had coolant not a whole lot but enough, then i checked the oil and it as far as i could tell it was at the add line even though it had been fine a few days before,(there has been no indication of an oil leak).
I rechecked the coolant and it looked like there was more in there than there was a few minutes before but i couldn't be sure, i was able to get the car restarted and headed towards home (about 2 miles away).at this point i was able to get the car going at around 25-45mph on the next sharp corner i turned the engine died again so i restarted and kept going, it died once more right before i reached the driveway but i was able to coast the rest of the way, once i parked the car i turned the engine off and tried to restart it a minute later and it started again so i left it be and called someone to bring me some oil, when they got to me with the oil i put some in and and it would not start at all.
- I checked one of the spark plug wires and it is not getting any spark.
- The ground terminal on the battery seems to be stripped
- The battery / altenator / starter---- All read to be between 12.15 and 12.36 volts
- The head lights, instrument panel and such still turn on properly.
I'm at a loss here, it was just in the shop 20 days ago and now it isn't working again. I would prefer to not have to put it back in the shop, if it might be something i could repair from home.
I have a 97 chevy and the only way to start it is to jump the starter relay, not sure if it is the key switch ot the nuetral saftey switch.
View 2 RepliesInfrequently (once every couple weeks) my 2002 Suburban won't start. The starter seems to work properly as the engine tries to turn over and even seems to initially start for a fraction of a second but then dies. If I wait 10 to 30 minutes it will usually start without a problem. This problem does not seem to be related to outside temp, recent use or car position. After dealing with this occasionally inconvenient problem for months I took the car to a service shop and was told that if they could not reproduce the problem that trying to fix it would be a wild goose chase. When the problem occurred again I took it to another shop who kept the car for 3-4 days but was unable to reproduce the problem.
They suggested that there was a problem with the fuel pump but did not want to replace it unless they were sure that was the problem. I then spoke to the Chevy dealership shop who also said it was most likely the fuel pump. In my frustration dealing with this problem I took the car back to my local shop and ask them to replace the fuel pump ($800). Unfortunately, the intermittent problem has persisted and I'm not sure what to do next. I did have an after market remote ignition added a number of years ago and took it back to them to see if this could be related and they said no way. I have also wondered about the security system being a problem in that my rear hatch cargo door does not lock even though the other doors lock normally.
99 suburban. X 1+ year progressively harder to start. Will turn over, but seems like it is not getting gas. Engine replaced 10k ago after I blew the last one at 220k. Did this before and after replacement. Once started runs fine. Can hear fuel pump kick on when key turned to on position? fuel relay?
View 8 Replies