I have a 4.3l CPi vin w 1994 s10 zr2 .... At a idle it revs up and down from 500.-1500rpms? Loading up on fuel and dies after idling after a short time. And while going down the road it cuts out like its going to die then it catches itself. Yesterday I put a new idle air controls sensor on and it fixed nothing !!!!!
View 14 Replies94 Chevy W-4 wheel-lift wrecker 5.7L TBI4l80e trans
Had a run of about 100 miles round trip on Wednesday. On the way back running at 65 mph on the interstate, got a couple of quick muffler-end back fires and engine died. Coasted to shoulder. Had memory of almost exact same incident last year and it was dead ignition module. Fortunately had a spare (used) module in glovebox. Swapped it out and engine started right up. Remainder of trip didn't quit, but ran very rough, lots of stumbling and getting it up to 60 mph was a struggle. Also when I got on surface roads it died twice when I was sitting stationary. It would restart, BUT only after cycling key; if I just turned to the key to "start" from "on" it would crank but not fire.
Limped it to my tow buddy's shop where I freeload and told him the tale. He said, "throw those old spare modules away and get a new one". Called the local parts house and had them send two, one for installation and one for glovebox. Took for test drive and appeared to be running okay except idle was a bit low. Couple of hours later went on a call and first stop sign I came to, went "blip" and I'm dead in the water again. Same story as earlier, must turn key off and back on to get it to fire. Drove rest of day without incident. Yesterday, no issues all day, drove total of about 120 miles both highway speed and surface. Gassed up this morning and mpg was above average (yay!), actually about .5 above average which is significant improvement (about 6%). Success?
Today died four times while sitting still. Same having to cycle key for it to fire. Did some quicky t/s to satisfy my curiosity about the key cycle thing. With truck running, pulled fuel pump fuse to kill truck. Then reinserted and it started up without having to turn key to off. Tried same thing by pulling one of the module plugs to simulate loss of signal to ignition. Reconnected and again fired up without key cycling.
No codes at any time since this came up.
Swapped out the module since I had bought a spare, no change.
Ohmd the ignition coil and no problems noted. So far, only dies sitting still at idle.
Additional info:
Plug wires, cap, and rotor <1000 miles. Distributor low miles and negligible play in shaft. Pickup coil checks right in middle of ohm range. None of these, of course, should need to have the ignition key cycled to restart if they caused a stall.
Next up will be replacing ignition relay (had to order), but I'm not very optimistic.
94 Mazda B4000. V6 4x4 manual
After engine has ran about an hour, I make a stop at location, then on startup engine has a hard time staying idle after engine it's warm. Cold start idles fine, hot start it dies out. I must rev gas for truck to stay on. What could this be?
I have a 94 C2500 suburban with a TBI 454BB. Obviously, I'm not concerned with fuel mileage, but I am currently getting about 4 miles to the gallon because the idle is stuck at 1800RPM. Normal idle for my model according to the index book is 750RPM. it's usually pretty close to that when operating normally (+/-25RPM). 3 days ago I did my biannual throttle body cleaning. Took it completely off replaced the gasket cleaned the throttle body and put it all back together. This is when the problem started... It now idles at 2300 RPM, it threw the code for bad idle air control valve, and I figured I probably got the plug wet when cleaning the throttle body, so I went ahead and ate the 60 bucks and replaced it.
Went through the reset process for the ECM to learn the new one and it the idle has come down to 1800RPM, it also literally DUMPING fuel through the injectors into the top of the throttle body. While I don't believe it is actually running rich, it seems more like the idle is trying to compensate for the excess fuel that is being dumped into the top end. Now, Before I go any further I want someone else's input. "I" think it is a also a bad throttle position sensor that probably got wet when cleaning the TB. But I am worried it could also be the PCM has finally gone out, although this is probably not likely because the entire ignition is run by this and if it was bad, it would stand to reason that it wouldn't run at all. Or it could be a bad vacuums control module. I have checked all my vacuum lines and do not have any leaks, so I know that isn't the problem. So that's where I am. I am hoping to check the leads on the TPS today with a ohm meter. I know my resistance levels.
I just replaced the water pump and put it all back together, now it won't run well enough to drive. Checked vacuum system, all sensor connections, hoses, gas cap, changed fuel filter, I can hear the fuel pump kick in, reset system with battery disconnected and have looked at everything I can think of so far.
Now - starts fine, idles about 10 seconds and then begins to idle rough and dies. If I use the throttle I can often keep the idle up, but then backfires or acts like no fuel and again dies. Used fuel cleaner and made sure there was plenty fuel in tank.
I am looking at replacing sensors at this point but which one first?? They get a bit expensive real quick.
I have a 2007 Camry that starts and runs fine, but after driving a short distance it dies. After sitting for some time, the car starts back up and runs fine again.
View 2 RepliesWhat would make a FI engine act like its flooding out and dying after a short run on the freeway?
Details:
1994 F-350 351W (just overhauled this winter)
has new TPS, ICM(?).
Dual exhaust dumps right before the tires
new filters in tanks, new fuel filter on frame rail
All fuel lines have been opened and blown out from the tank to the engine compartment fitting near firewall.
Fuel pumps hold good pressure when tested.
Symptoms:
smells like its running rich most all the time
after a short hiway run @ 70MPH it will stumble and die when returning to surface streets.
fuel smell near engine sometimes, but no obvious puddles or leaks anywhere.
May be related?:
When on a longer highway run, I can't use the FWD tank for a long period without the engine stumbling and cutting out or popping at times. But I can swap to the rear tank for a bit then run the FWD tank again for a while. driving up hills it seems to be worse, but I'm in the panhandle of TX right now..good grief!
I am having to drive this truck for work long distances. While I dont expect a vast fuel range, it would be nice if I could go a couple hundred miles on 20 gallons of gas....
When going short distances, half mile to two miles, and I turn off the car it will not REstart. Dash lights come on but engine does not make a sound. No clicking, no engine trying to turn over, nothing. After the car sits for awhile and cools off it starts up with no hesitation at all. If on the road for several minutes the car does not have this problem no matter how far or how many times I turn it off and on. The battery checks out ok. Someone said it could be a ground wire loose. What do you think. Is this something I could do myself?
View 5 RepliesI just got my Prius v for few days. I noticed that I only saw the battery bar fully charged once and for a very short time. Also, when I idle my car for a period, the battery would drop to three to two bars. Is it normal or there is a problem to my battery? I got 49500 miles on it,
View 14 RepliesMy car is 6 cylinder 2000 Oldsmobile Intrigue. It won't start after a short time of being off. It has to be more than 2 hours off before it starts up. What is wrong?
View 11 RepliesBulbs, wiring and fuses are fine. Backup lights sometimes work for short periods of time if you jiggle the socket on top of the PNP switch. Tried spraying the sockets with wd 40 but did not work. know if cleaning the PNP will resolve this?
View 9 RepliesSo a couple weeks ago I refilled the reservoir for coolant because it was low. But the radiator level was fine. Then today I checked the reservoir and it was below the L and the radiator level was a little under as well. What could be causing this? Possibly a hose? I don't think it would be a bad radiator?
View 10 RepliesPower steering on '03 Ion cuts out from time to time and then comes back on a short time later.
View 5 RepliesWas having some issues with my 2000 Passat not starting after only being turned off for a short period of time (long periods of time no problem). My check engine light came was on along with the Emissions Workshop message in the display. I took it in and had it serviced at my local repair shop. They said it was something with a temperature gauge or something to that effect that was causing it to lose a temp reading. Anyways, after the repair the car starts fine, runs great, the check engine light went off and so did the Emissions Workshop display. Then a few days later it came back on...still not having any issues with it starting but what's going on??
View 7 RepliesThe ac on my 97 chevy k1500 siverado works for about an hour then for no reason the air stops blowing thru the dash vents. The motor continues to run but will not blow thru the vents. At the same time my blower motor will slow down to the lower speed position even when I have it on high. But, if I shout off the ac for a view moments the air will start to come back up to speed and will begin to blow thru the dash vents again. I have replace all the blend doors excep the one for the cab recirculation. Replace the motor relay swith, the motor thermostat, and the dash mounted control module. The heater system seems to work fine.
View 10 RepliesI recently purchased an '09 Prius. When driving, the MFD shows the trip info/MPG stats. If I want it to show audio or climate, I can press the button the dash and that info will be displayed. However, shortly thereafter (10-15 seconds maybe? maybe less?), the screen reverts to showing trip info/MPG stats.
I'd like to have my display remain on whatever I select - be in audio, climate, or trip info. How to make this happen?
After I drive my truck and park it for any period of time and then restart the truck it will sputter and backfire rpms do not go over 1500-2000. If I put it in neutral and rev the engine this will work but not always correct the issue. Eventually if I just push through it after 2 or 3 min it will go back to normal. I replaced the spark plugs, wiring and distributor cap. I have also changed the O2 sensors nothing seems to work though.
View 6 RepliesI notice a bad smell when I start my 2011 ES350for a short period of time. After that it is fine. Auto has just over 10,000 miles on it. E mail from dealer tells me filter needs changing. Somehow I believe there is more to it.
View 14 RepliesRecently purchased my first Prius, it's the v wagon.
When accelerating from a stopped position in eco mode there's a relatively severe drivetrain shutter/vibration for a a short period of time until I back off the throttle, almost feels like a clutch slipping with added vibration.
It's probably a normal noise produced by this style transmission, just looking to verify if this is true so I can stop worrying about it.
been off and on having problems with my r/f speaker cutting out, not completely-i get a little noise from it. ive replaced the speakers in the front but found since i have the audiophile system, they sounded terrible. i removed what i believe to be a crossover from the factory speaker & reinstalled the crossover with the factory connector & tweeter, but spliced in the new 6x8s. this made it sound wonderful again. now i still seem to be having the problem and found if i unplug the radio and plug it back in it will work good again for a short period of time.
my question is can i use any ford radio that looks like it is the same, I like the ones with the chrome on thje. Or should i just get a kenwood or something. i dont want to spend a ton of money. and will an aftermarket head unit decrease sound quality since i have the audiophile as the speakers originally did without the crossover.
I have a Mazda MX3 V6 it's a 1994, anyways the cars starts and runs fine, you can rev it up and it don't stall sputter or anything, but as soon as you put it in gear it dies, just seeing what may be going on with it. Also I just put a new IAC vavle on the car. don't think that has anything to do with it, but this is the 1st time I have ever worked on a mazda, and just as a side note, the car ran good for about 2 days after the install of the IAC.
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