1981 Chevy Van will not run when I let off the gas, dies eve

FREDEE7

MEMBER
1981 CHEVROLET VAN
V8
2WD
AUTOMATIC
90,000 MILES

Sirs, just last week I started my van and when I let off the gas it died, tryed again and still it died everytime! It will not run unless I hold my foot on the gas, then if I manage to get it in gear, I hear a pinging noise, but I cannot drive it to the gas station because it is really rough running, also i;am scared of getting stranded. I replaced the fuel pump a couple of years ago. I replaced the pcv valve and the breather filter about a month ago. This problem just started last week. Please help! My van engine is a 305 G-20. Any suggestion would be greatly appreciated.

Thank You! Norma

9 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Do you have a check engine light and when was it last tune-up?

Have these components tested: Idle air control valve, coolant temperature/throttle position/MAF/MAP sensors, EGR valve and to include a fuel pressure

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Tuesday, August 5th, 2008 AT 5:45 PM

BLACKOP555

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10,371 POSTS

http://2carpros.com/forum/viewtopic.php?p=316974#316974

go there mastertech jess.

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Tuesday, August 5th, 2008 AT 9:48 PM

RASMATAZ

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Madam

20 yrs w/o a tune-up-lets do one and if it continues have the items checked out earlier-

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Tuesday, August 5th, 2008 AT 11:52 PM

RASMATAZ

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Ms. Norma -is this a carbuerator or an electronic fuel injection fuel system? ( Throttle Body Injection or Multi Point Fuel Injection.

Won't maintain curb idle-could be a fuel pressure not within specs, idle air control valve, throttle position sensor weak spot/OOR /EGR valve open-and the list goes on-

B5 I checked it out Thank You Very Muchy-You good dawg, later dude-

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Wednesday, August 6th, 2008 AT 12:02 AM

FREDEE7

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2 POSTS

Rasmataz, Thank You! So much for answering! I now have a starting point. Also my van has no check engine light that I have ever seen, and it is a carbuerator. Sir I do not know how to reply other the ask new question area, I hope this is alright.I noticed that it does have this black round thing on the right fender are that says cannister?

Norma

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Wednesday, August 6th, 2008 AT 2:30 PM

RASMATAZ

MECHANIC
75,992 POSTS

Its not a question if its not asked-have the idle air control valve check and comeback with the results this is where we start-step by step

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Wednesday, August 6th, 2008 AT 5:06 PM

FREDEE7

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2 POSTS

Rasmataz, Thank You! Again for answering. And sir I will get back to you and let you know as soon as I can find someone to come to my house and help as it is now, it is not safe enough to try to get to some shop. I will let you know.

Thank You! Norma

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Wednesday, August 6th, 2008 AT 5:41 PM

FROGSLIPS

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6 POSTS

Have someone remove gas line at carb or injector inlet. Turn key over check color of gas for water and trash , check pressure,
if not enough gas replace filter inside frame
rail passenger side, not enough gas
pitched lines on top of gas tank, from gas pump inside tank, pump has a filter on it also inside tank, tank had to be dropped and cleaned.
Frogslips

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Friday, August 22nd, 2008 AT 11:01 PM

FROGSLIPS