Fuel pressure issue - 95 Astro - please help
Can someone please help me figure this out? I am really stuck.
I have a 1995 CHEVROLET TRUCK ASTRO VAN 2WD 6 Cylinders 262 W 4.3L CPI. 105,000 miles Symptoms: The van is cutting out like it is running out of fuel while driving. I let the van warm up first before a test drive. It drives okay (not great) at first, then it starts acting like it is running out of gas. It bogs down and stalls when I accelerate. I tried flooring it and it wants to die. This problem is progressive meaning it is getting worse; now it happens after just a couple miles of driving. The problem will go away (van drives much better) after turning off the van and then back on. History: Fuel pump quit working over new years. I replaced and it drove fine. I drove one 300 mile trip then another 300 miles of city driving with no problems. It got real cold (irrelevant?). I drove for 25 miles with no issues. I filled up with gas (irrelevant?) after work and drove 10 miles and it started acting up. The problem got worse over the next couple days (60 miles city driving). I changed the fuel filter which was clogged and appeared to be the original filter. It seemed to run fine. I drove several very short trips 5 miles which may have been too short to notice symptoms. I filled up again, then drove 15 miles. It acted worse than ever. I checked the fuel pressure. It was about 62psi with the pump running but dropped to 6psi when not running. I replaced the CPI unit and the nut kit (fuel lines). The fuel regulator was leaking. I could see where the gas had cleaned the inside of the plenum. I retested fuel pressure. It was 62psi with the pump running but dropped to 22psi with the pump off. My Haynes manual said it should only drop 3-10psi with the key off. I road tested the van and it has the same symptoms. Shouldn't I be able to see or smell the gas that bleeds off? I don't see any gas (I will double check tonight). Now I do not know what to do. I am stuck. Can anyone offer any suggestion? |
There is a "sock" type filter for the big chunks at the fuel pickup in the
tank. If these plug / clog or collapse they can cause similar problems. Good luck, Don > wrote in message oups.com... > Can someone please help me figure this out? I am really stuck. > > I have a 1995 CHEVROLET TRUCK ASTRO VAN 2WD > 6 Cylinders 262 W 4.3L CPI. 105,000 miles > > > > Symptoms: > The van is cutting out like it is running out of fuel while driving. > > I let the van warm up first before a test drive. It drives okay (not > great) at first, then it starts acting like it is running out of gas. > It bogs down and stalls when I accelerate. I tried flooring it and it > wants to die. This problem is progressive meaning it is getting worse; > now it happens after just a couple miles of driving. The problem will > go away (van drives much better) after turning off the van and then > back on. > > > History: > Fuel pump quit working over new years. I replaced and it drove fine. > I drove one 300 mile trip then another 300 miles of city driving with > no problems. > > It got real cold (irrelevant?). I drove for 25 miles with no issues. > I filled up with gas (irrelevant?) after work and drove 10 miles and it > started acting up. > > The problem got worse over the next couple days (60 miles city > driving). > > I changed the fuel filter which was clogged and appeared to be the > original filter. It seemed to run fine. I drove several very short > trips 5 miles which may have been too short to notice symptoms. I > filled up again, then drove 15 miles. > > It acted worse than ever. > > I checked the fuel pressure. It was about 62psi with the pump running > but dropped to 6psi when not running. > > I replaced the CPI unit and the nut kit (fuel lines). The fuel > regulator was leaking. I could see where the gas had cleaned the > inside of the plenum. > > I retested fuel pressure. It was 62psi with the pump running but > dropped to 22psi with the pump off. My Haynes manual said it should > only drop 3-10psi with the key off. > > I road tested the van and it has the same symptoms. > > Shouldn't I be able to see or smell the gas that bleeds off? I > don't see any gas (I will double check tonight). > > Now I do not know what to do. I am stuck. Can anyone offer any > suggestion? > |
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I do not think I replaced the pulsator, unless it came with my autozone
pump. The CPI and nut kit where ACDelco parts. I kind of think it might be the catlytic converter now. That is what a couple people have told me and it seems like these symptoms could be caused by a clogged converter. I will test it first since it is a bit easier. Then I guess I will either do the test drive you suggested and change the pulsator. Thanks for the suggestions, Dave |
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Bad tank of gas with lot's of water/crud. It keeps plugging things up.
> History: > Fuel pump quit working over new years. I replaced and it drove fine. > I drove one 300 mile trip then another 300 miles of city driving with > no problems. > > It got real cold (irrelevant?). I drove for 25 miles with no issues. > I filled up with gas (irrelevant?) after work and drove 10 miles and it > started acting up. Notice how it started right after you filled up? Pump out the tank. Fill with known good fuel. Replace the fuel filter again. Brt the problem goes away. -- Steve Williams Near Cooperstown, New York Pacifism - The theory that if they'd fed Jeffrey Dahmer enough human flesh, he'd have become a vegan. > wrote in message oups.com... > Can someone please help me figure this out? I am really stuck. > > I have a 1995 CHEVROLET TRUCK ASTRO VAN 2WD > 6 Cylinders 262 W 4.3L CPI. 105,000 miles > > > > Symptoms: > The van is cutting out like it is running out of fuel while driving. > > I let the van warm up first before a test drive. It drives okay (not > great) at first, then it starts acting like it is running out of gas. > It bogs down and stalls when I accelerate. I tried flooring it and it > wants to die. This problem is progressive meaning it is getting worse; > now it happens after just a couple miles of driving. The problem will > go away (van drives much better) after turning off the van and then > back on. > > > History: > Fuel pump quit working over new years. I replaced and it drove fine. > I drove one 300 mile trip then another 300 miles of city driving with > no problems. > > It got real cold (irrelevant?). I drove for 25 miles with no issues. > I filled up with gas (irrelevant?) after work and drove 10 miles and it > started acting up. > > The problem got worse over the next couple days (60 miles city > driving). > > I changed the fuel filter which was clogged and appeared to be the > original filter. It seemed to run fine. I drove several very short > trips 5 miles which may have been too short to notice symptoms. I > filled up again, then drove 15 miles. > > It acted worse than ever. > > I checked the fuel pressure. It was about 62psi with the pump running > but dropped to 6psi when not running. > > I replaced the CPI unit and the nut kit (fuel lines). The fuel > regulator was leaking. I could see where the gas had cleaned the > inside of the plenum. > > I retested fuel pressure. It was 62psi with the pump running but > dropped to 22psi with the pump off. My Haynes manual said it should > only drop 3-10psi with the key off. > > I road tested the van and it has the same symptoms. > > Shouldn't I be able to see or smell the gas that bleeds off? I > don't see any gas (I will double check tonight). > > Now I do not know what to do. I am stuck. Can anyone offer any > suggestion? > > ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
I think that is what I will try now. I just replaced my exaust/convert
from the O2 sensor back and it did not help. This is getting expensive :( |
I think that is what I will try now. I just replaced my exaust/convert
from the O2 sensor back and it did not help. This is getting expensive :( |
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> wrote in message ups.com... > I think that is what I will try now. I just replaced my exaust/convert > from the O2 sensor back and it did not help. > > This is getting expensive :( > Why would you do this? Did you confirm that the cat was blocked up, or are you just throwing parts at it? |
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