Astro - Chevrolet :: 1997 - Runs Rough At Idle
Dec 19, 2013
I've taken it to a half dozen mechanics, none can diagnose the problem. From a cold start the engine idles well, but once it warms up and the fast idle setting shuts off, it begins to vibrate quite a bit. I rebuild that included an all new fuel injection system, new ignition parts (including distributor, replaced at a later date,) new wire to alternator (the old one had cracked insulation,) and a new mass airflow sensor (swapped in from a parts van-no effect.)
Basically everything is new except for the sensors (crank sensor, idle air, throttle position, etc.,) and the fuel filter and pump. I'm not getting any codes, and at least two mechanics said it had good fuel pressure. It FEELS like a vacuum problem on a carburetor vehicle, but I had the vacuum harness checked as well, and everything seems to be in order.
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So I have a very confusing problem. In my 92 Chevy Astro the battery occasionally stops charging runs down and dies while I am driving and will not restart via jump but must be fully charged. This first happened a couple months and several thousand miles ago but has occurred 3 times in the last two weeks. Both the battery and the alternator have checked out good, and the alternator belt is tight as a drum. What could this possibly be?
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My 2000 Chevy Astro van started having problems whenever I accelerate, hesitating losing speed, and all I can possible tie it to is a new gas station where I filled up which said "May contain ethanol". I think the "service engine light" flashed on for a second but does not stay on.
Could bad gas or the ethanol be the problem? Would getting the problem codes read at a parts place work?
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I have a 1997 Astro van and recently I shut the back doors (two door version) and now they will not open/unlock. I tried the power locks as well as the key. I read where you can take off the speaker cover in the door and reach thru and unlock/release from there. That did not work either. Not sure WHY Chevy decided not to put interior release handles. Any trick to opening the doors so I can see what the problem is?
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I have a 97 Chevy K1500 truck that i have been having problem with starting. Sometimes it will start. When it does the idle is rough. When i put in in gear it almost acts like it will shut off. Then it comes back and it drives fine. If it shut it off it may or may not start. I had the distributor cap a rotor replaced. Then I replaced the spark plugs and wires. Still does not start. It seems like it is getting too much fuel. I pulled the fuel pump relay and the truck would start then die out. When i put the relay back in truck does not start. I am not sure what might be the next piece to look at. I was thinking the MAP sensor or the throttle position sensor. So far i have not had any codes come up.
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I am trying to keep driving my Astro until I pay off my wife's new car. Repairing the door shouldn't be a problem if I could get the door open to remove the inside door panel. How to get the door open? Can't use the inside or outside handle now.
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1996 s-10 runs very rough at start-up .. smooths out after it warms up and runs really great. Is it just the plugs and wires or something else??
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I have a 2005 Chevy Equinox with 73K miles. When I first start it up morning the car runs rough for about a minute or two and then smooths out. I took it to a mechanic who said there was oil on one of the plugs and to get rid of the car. I tried another mechanic on Craigslist and he replaced the upper plenum gaskets. It ran better for about a day or two and now the problem has resurfaced.
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My pickup runs smooth 95% of the time. It runs rough at red lights and when pulling away from stops. It seems to happen more when the A/C is on.
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I'm working on a 06' Passat 2.0t and it runs rough only at idle like its misfiring only vag-com says no misfires and no engine codes. MAF looks like it may be a little low on performance but should be ok. I tried swapping out coil packs but no change. I changed the pcv breather and hose, cleaned the carbon off the valves, swapped the throttle body with a known good one, and changed the piston on the fuel pump and still no change. It smooths out when I turn the a/c on but that's the only thing that changes the idle.
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I have a 2000 Corolla with about 147,000 miles. At idle it runs very rough, but can accelerate up to about 50 mph. Then it starts to cough and wheeze and run roughly again and won't accelerate any further. It feels like the engine will shake itself off its mounts, so I slow down and stay under 50 mph. I replaced spark plugs and a repair place hooked it up to a computer. They then told me it needed about 1800 dollars worth of repairs to replace the valve cam I think they said. I'm skeptical and wonder if it just needs a tune up, . It has not had one since I bought it at 128,000 miles, and II don't know how long it had been prior to that.
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My 98 Maxima won't idle without dying, it sputters when you accelerate, and it tries to die while coasting. I've changed two O2 sensors (AutoZone gave me the code for bank 1 sensor 1 & 2) changed spark plugs, tried fuel injector cleaner, oil change, and cleaned MAF sensor & checked the wiring. It;s still spitting out the black exhaust. Although after changing the O2 sensors it quit for about a day or two but started again (I'm guessing the other sensors need to be changed to) But the main problem is once it warms up, it really runs like crap, and is a major gas hog. I'm getting about 12 Mpg.
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I have a 1981 Toyota pickup. when i start her. she starts fine, but sometimes she will idle fine, and then suddenly refuse to. it seems to be random. i can keep her running if i keep my foot on the gas just a little, to keep her rpm's up. but have to put her into N and keep my right foot on the gas and my left on the brake to stop her when she refuses to idle. when she does this on the freeway, it just sputters and runs rough, but as long as i have the gas on, she keeps going.
I don't know what it is that regulates the idle to keep her going when my foot isn't on the gas. also her serpentine belt is slipping. the one attached to the alternator, i can see her charge voltage dropping when she squeals her belt. that i know how to fix, but i'm wondering if it's that, that is the issue? i was told that, but i don't think her serpentine belt has anything to do with her idling. i was told how to raise her idle on the throttle cable and the Idle screw, but is there something else that regulates her idling?
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I have a 1997 Buick Park Avenue with a 3800 series II motor that runs perfectly in dry weather. However, in wet conditions, rain melting snow, etc. it will begin to miss and throw out a P0300 OBDII engine code. This is the code for multiple random misfire. If I leave it to idle on its own it will get worse and die out right. Sometimes restarting it is an option though it still runs rough, but I can limp it to somewhere I can work on it. I think its electrical, since it doesn't seem to get the spark it should though fuel doesn't seem to be a problem as you can smell it after a bit of cranking.
I've been battling with this thing for over a year so far and have replaced the following, ECU, all 3 coil packs, spark plugs/wires(newest parts), mass airflow sensor, cam position sensor, ERG?(emissions deal I believe, mechanic friend put it on) valve. I had the battery trickle charged and tested at an Autozone, I haven't had the alternator tested yet.
Its a very frustrating problem, as far as I can tell I've replaced everything on the ignition system with the hopes that it did the job only to get stranded during the next long rain. It does take quite a while in wet weather for it to start acting up, but once it starts missing a little bit, it doesn't stop until the entire engine compartment has had a few days to dry. Engine temp doesn't seem tosolve the problem dry out. I'd also like to note that I've noticed on this latest trouble that the interior lights have been flickering and headlights too. It may have been doing this earlier, but I hadn't noticed if it was. I'm going to check what kind of voltages the alternator is throwing out next time I have it running.
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My truck runs rough/bad when it rains or is damp out. It stutters and had no acceleration. I just had a new fuel pump put in January. It improves after a while on the road. If it's wet, my travel sucks.
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2001 chevrolet astro van won't start, I have spark and fuel. compression ok.
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'91 buick, 3 spd. 0 acceleration in 3rd, trouble code says TCC curcuit. Lopes @ idle when warm, runs rough @ times. many new sensors, timing chain & sprockets, still, the loping.
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we have a 1995 chevy astrovan. Some days it runs just fine and then others it cuts out repeatedly when we slow down or brake. It?s been to the mechanic a million times and he can?t find the problem?
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The air bag warning light is often, but not always, ON in my 1998 Chevy Astro. Unfortunately, it is ON whenever I seem to have a chance to bring it in for state inspection. My mechanic of many years has been unable to determine the cause.
(Note: An earlier problem with the battery draining was taken care of by turning the Dome Light button to the Off position and leaving it there permanently.)
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I have a 99 F150 Lariat 4x4 with a 5.4, 150,000 mile on it. About 2 weeks ago I blew spark plug out on #2, and a friend who said he has heli-coiled a bunch of these tried to do mine and ruined the head. Anyway, I called a local engine shop and got another PI head, only I used my cam in it. Torqued it as per the book, etc... Mind you that the engine ran perfect before all this.
Got it back together with all new plugs, new exhaust manifold, and 2 new COP's. When I start it-it runs rough for about a min, then straightens back out to run perfect again, and after a few seconds you can hear a solenoid click, then it goes back to missing again. This goes on and on... I went through all the vacuum lines and checked them, checked the egr valve, put on a new IAC, new PVC, cleaned the MAF, and checked everything else with a DVM.
I took it out and drove it.... Runs good for a minute, then it goes back to missing, then back to smooth again. This just keeps going on and on. I noticed when I hear that click, it sounds like a mad rush of air being sucked in, but I cannot locate it. I ordered a new set of COP's to try next. I can understand if it just plain missed all the time, but this it intermittent. Also, the only code I can get is a too lean on bank 1, so I replaced the 90's and the pvc valve. Now no codes but still in and out of missing. It ran perfect before the new head.
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My wife drives a 1995 Chevy Astro. It has twice now stopped running with no warning. This happened while driving down the road. The headlights and engine cut out, but the turn signals, power windows, radio display, and such have power. Once it sits for a couple of hours, it starts right up and runs fine for weeks.
Is there an electrical connection of some kind between the fuel pump and the headlights? What might be going wrong?
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