Chevrolet - Caprice :: 1995 - Fuel Pump Getting Power But Won't Running?
Feb 21, 2014
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
Advertisement
My 95 chevy 1500 pickup is having fuel pump issues. Somewhere between the relay and the sending unit. Pulled the tank, and put power directly to both the pump and the sending unit. They both run. Put in new relay, still not turning on the pump. Do not know if this is related, but the switch to turn on the interior light when you open the door does not work on the drivers side door. If I pull on the switch the light will come on.
View 3 Replies
Performance problem Caprice royale 2005 LS1 Engine Gulf space V8 180000 KM its showing messages:
1 - Service Vehicle Soon
2 - Safety Mode - Reduced Performance
And could not go above 80kmh.
I Changed Throttle and fuel pump , spark plug but still same problem.
View 4 Replies
I have a 92 caprice 5.7. Vehicle had suddenly stopped ... Providing fuel to the tbi. I immediately checked relays etc all were good. Then I figured it had to be the pump because I didn't hear the whirl of the pump with the key forward engine not cranking. I replaced the fuel pump. Still same problem no fuel. I found the 20 amp fuse blown that sits next to the 2 relays. I replace the fuse then the fuel pump got energized as I cranked the engine it almost started but then the fuse blew again. I have a short in the circuit I believe. I don't have a wiring diagram,what else is on the fuel pump circuit so I can have a direction to start in to find a probable bad wire.
View 3 Replies
So last week something happened that I've never had happen before. I was dropping my daughter off at school and I noticed that my dash lights weren't on. My headlights still worked and the blinkers did to.
When I got home and parked it, I checked out all the fuses. There was a 20 amp fuse that was blown, so I replaced it and then checked the relays under the hood. I turned on the key to check the dash lights and they still didn't work. The 20 amp fuse blew again, so I replaced it again. Now the dash lights work again.
However, when I tried to start it, it would turn over, but the fuel pump isn't turning on.
Long story short, I've replaced all 4 relays under the hood, installed a new fuel pump and also replaced some bulbs in my taillights and sides over the front tires. It turns over when I try to start it, but the fuel pump still isn't "kicking" on and it won't start. I feel like somehow, power isn't getting to the fuel pump.
View 12 Replies
My issue. 95 short Aerostar, Vulcan engine, A4LD trans. Just got it last week. Bought a new trans and when I went to pull the van into the shop, it wouldn't start. Cranks but won't run. First thing I checked is fuel pressure, got zero. Pulled the kick panel and found the inertia switch, but the harness for the switch is getting 1.8 volts with the key in "ON" and the same with it in "START". IIRC it should be zero in RUN after a second or two (if the engine isn't actually running, that is), and 14 in START.
Checked all fuses in the panel by the steering column, they're good, and switched around the 3 relays by the battery. No good and I don't hear the FP relay when I turn the key. For now I'll run wires directly from the battery to the pump, just til I get the trans done, but it needs to be fixed anyway because I plan to make this van a DD. Here are my questions:
-Is there a second fuse panel I didn't find?
-Could this be a computer issue? If it is, would the computer fuse be blown?
View 2 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
Today, my 1995 E150 suddenly started acting like it was running out of fuel Lucky for me, this happened close to both a parts store and my usual mechanic's shop. Unluckily for me, it happened on Saturday, and my shop can't get to it until Thursday. So here I am, hoping to do a fix in the meantime.
At first, it seemed that it must have been the fuel pump, because I couldn't hear it come on when I turned on the ignition. Then, a guy who said he was a mechanic told me he could hear the pump cycling, and that my problem was the fuel pressure regulator. So he managed to start the vehicle after a few tries, then it crapped out again. He did this twice. Then he went away.
I called every parts store in town, and none of them had a fuel pressure regulator for my vehicle, and the earliest any of them could get one was Monday. But I knew I was due for a fuel filter, and I'd changed filters on this vehicle before, so I got one of those and put it in. To my delight, the van started right up and idled beautifully. In fact, it ran beautifully for about 15 minutes, until I came to a slight rise, then it crapped out again. It still started up and idled smoothly, and even revved up smoothly, until it reached a high idle speed, at which point it crapped out. I did manage to limp into the parking lot of my shop - which, again, can't get to it until Thursday.
So my question is: does this sound like a fuel pressure regulator to you? If so, is that a job which somebody with a reasonable mechanical aptitude (i.e., at least good enough to change the fuel filter) should be able to feel safe doing? If the answer to those two is "yes" (or even if it's "no")....
View 15 Replies
I just bought another 1991 Ford. This one is a 1/2 ton XLT Lariet with the 302 and for the first time I own a short bed. I also have a 1991 F-250 XLT with a 460 and a 8' bed.
Here is the problem, ( I think) it will not run or at least not for long. The fuel pump, which I am guessing is in the rear tank will not stop running. On the F-250 the pump stops running after a few seconds after I turn on the key.
Where should I start to find out my problem with the fuel system?
View 2 Replies
I have an 87 F150 4x4 4.9L EFI with a single tank. Fuel pumps keep running even when the key is off. I tried swapping relays but the problem still exists. The engine will start and run OK for about 15 secs. then die. I installed a new low pressure pump, high pressure pump seems to be OK. I also installed new fuel filters. I dont want to just throw parts at this truck, where do I go from here?
View 4 Replies
5.4 L, Engine runs if primed at the intake. Fuel pump can be heard running but no fuel gets to the engine. Truck is mint and being sold real cheap due to this issue.
Fuel Pump? Filter? Both? I haven't seen the truck, a friend is considering buying it and rolling the dice it is a quick fix. Fuel is in the tank .....
View 2 Replies
After my 95 GCL wouldn't start and was towed to Jeep dealership, the problem was diagnosed has the fuel pump. I went to pick up my Jeep. Started and ran beautifully..but I noticed the air bag light was on, and wasn't that way before it wouldn't start. Went back into dealership and told'em..they told me nothing they did would have any bearing on the air bag or the dash warning light. What could have happened to cause this problem? I have re-booted the electrical system (more than once) by disconnecting the battery.
View 1 Replies
Geo won't start. It has a new battery and air filter. Just replaced the fuel pump and fuel filter. I don't hear the fuel pump "whirring" when I put the key in the ignition (to on position). All the dashboard lights come on when the car is in on position.
I suspect the relay or the fuse, but having trouble finding the correct one of each. What does the relay look like? i.e. part number? What is the spec for the fuse? 20amp 30 amp? This has been a great car.
View 5 Replies
I'm working on one of our fleet vehicles here, a 1995 Explorer. about 2 months back, it stalled out. Got it back to the shop and turned the key on .... I couldn't hear the fuel pump. I replaced the fuel pump and the fuel pump relay. Vehicle started right up and seemed to run O.K. About 2 weeks ago, it stalled out again, same symptoms, acts like it runs out of gas and can't hear fuel pump.So, I have been playing with it and find that it starts up great in the cool mornings. In the afternoon when the temps are hotter, it won't start (can't hear fuel pump). The following morning when temps are cool, it will start right up and can hear the fuel pump. I almost wrote this one off as a defective fuel pump, but I'm not sure on this one.
View 7 Replies
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?
View 2 Replies
My 1995 ford ranger with a 3.0 will not start. It acted like the fuel pump was going out so I replaced it. I also replaced cmp sensor and the camshaft synchronizer due to old cmp sensor broke and messed up the synchronizer. My truck is getting fuel and spark but still will not start. Where do i go next?
View 4 Replies
I have a new thermostat and a new water pump. Why is my car still running hot?
View 4 Replies
95 caprice 4.3L V8 150,000 miles. I smell coolant every time i drive the car (everyday). Drives fine, doesn't overheat. Smell is not inside the car but when I get out and stronger as I walk towards front of vehicle or stick my nose to the grill. Low coolant light came on about 2,000 miles ago. i filled to proper level in the coolant tank and since then only has lost an inch or so. no leaks on the ground but distinct coolant smell every time. Anything to worry about?
View 1 Replies
So, I just had the fuel pump replaced on my '15 6.7 a month ago and it just died again. (next day edit: it didn't actually die, it showed all the same symptoms)
Same symptoms: whining sound, low fuel pressure warning, reduced power warning.
This time I'm 50 miles from home so I pulled off the road before it shut off. Interesting, I was in a hilly area and my low fuel warning came on too. We are waiting for a tow. I was considering trying to push on but don't want to get stuck in a dangerous spot on the highway. We're in a church parking lot.
So, last time this happened I was on flat road with about a half tank of fuel on a lunch break. I ran a mile after the warnings came on to feel out the issue and to see what would happen. I happened to be only about a mile away from my dealer so I drove that way. I got reduced power warning and then it cut power on me (limp mode). I made it to about 100 yards away before it cut off.
This time, I was in a hilly area at night on a windy two lane road with no shoulders in the woods. I was miles from civilization and was showing below a quarter tank of fuel. ~100 miles to EMPTY. I got the low fuel pressure warning first and then the reduced power mode before the whining noise started. I was climbing a hill on a curve at the time. I drove a quarter mile and then pulled off the road into a parking lot so I wouldn't be stuck on the shoulder. It didn't actually go into limp mode.
I let it sit a few minutes, talked it over with the wife and decided to call for a tow. After talking to the tow truck driver who said he would be an hour because he had to go find a bigger truck, I decided to see what I could do while I wait. I fired it back up and the fuel level dropped to below 1/8 and I was now showing 33 miles to EMPTY. I was parked on a hill with the back end up. I had backed the truck into a space to make it easier for the tow truck driver. I let it run a minute, checked for leaks and it seemed to run fine with no studdering or additional warning lights.
CEL was on but no new warnings. I put in my code reader and pulled the P0087. Just one code. I revved it a bit to see if there were any issues. It seemed fine so I decided to try my luck. I started driving towards home with the intention to stop at the first diesel station to fill up. Truck ran fine. After two minutes of driving gently, heart racing, my fuel level came back up and it now read 88 miles to EMPTY. I drove 11 miles to the nearest station and filled up. No issues. I shut it down. I fired it back up. Still no issues so with a full tank, I drove home the remaining 30 miles without issue.
Planning to take it in to the dealer Monday to get it checked. Could this be from an air pocked due to low fuel level and hilly terrain? Is my new pump dying already? Is there something else going on inside the tank or elsewhere?
View 14 Replies
More electrical gremlins. The car is a 2000 1.8t, it has had some running issues since I got it a few weeks ago. I replaced the ECM (had water damage), fuel pump relay and battery and it was running fine all week, my wife went to start it after work and it died when she took the e-brake off. I went to her work to get her and noticed the rear marker light was on when the car was running. Got the car home and now it wont run for more than about a minute and the light comes in when the fuel pump is running, turn the key but don't start the car and the pump and light come on for a second and go out. Start the car and the light stays in until the car dies.
Is there anywhere in the system these two circuits are connected? Do they share a load relay anywhere?
View 13 Replies
Just did a complete engine rebuild on 2003 Explorer. All back together....have new battery, starter working, spark at plugs lol crank but no start. Next check is fuel. Fuel pump WAS working fine when timing chain guides went about a year ago...(had to rehab 2 parents and finish bath remodel before pulling engine) So... 1 year later I can't seem to get the fuel pump to work. I checked all fuses and relay. The fuel gauge is working - full tank.
View 14 Replies
