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1993 chevy astro keeps dying on me


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Redneck1983
Novice

Apr 25, 2013, 10:49 AM

Post #1 of 10 (2050 views)
1993 chevy astro keeps dying on me Sign In

hey guys I have a 93 Chevy Astro van to and I'm having trouble with it. it don't want to stay running when I got it started it will run for a little while and then I'll die. so I took it to my local autozone and have them do a code read on it. it through back three codes. 35,43,54. the book says 35 is idle speed controller or idle air control valve. the books is 43 is throttle position switch out of adjustment or knock sensor signal error. 54 is mixture control solenoid circuit shorted or E.g.r. valve fault. can i get you guys ideas and opinions on where I should go next for trying to fix this problem?!? 


Hammer Time
Ultimate Carjunky / Moderator
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Apr 25, 2013, 12:34 PM

Post #2 of 10 (2021 views)
Re: 1993 chevy astro keeps dying on me Sign In

What is the 8th digit of the VIN#?



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Redneck1983
Novice

Apr 25, 2013, 3:35 PM

Post #3 of 10 (2008 views)
Re: 1993 chevy astro keeps dying on me Sign In

Z is the 8th. that tells u its tbi? Its been sitting for many year.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 25, 2013, 4:19 PM

Post #4 of 10 (2001 views)
Re: 1993 chevy astro keeps dying on me Sign In

Yeah, I know what that means.


CODE 35 - Idle Air Control (IAC) Error (PCM Only)
CODE 43 - Knock Sensor (KS) Circuit
CODE 54 - Fuel Pump Relay Circuit (Low Voltage)

35,
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.


43,
Make sure the sensor is plugged in and the wire isn't damaged. That is most likely a bad sensor

54,
That could be a connection issue in the power supply somewhere or a bad relay



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Redneck1983
Novice

Apr 26, 2013, 1:07 PM

Post #5 of 10 (1981 views)
Re: 1993 chevy astro keeps dying on me Sign In

I get that but which 1 do u think is making it die on me?


Redneck1983
Novice

Apr 27, 2013, 12:33 PM

Post #6 of 10 (1960 views)
Re: 1993 chevy astro keeps dying on me Sign In

Ok so watching the tbi the gas just stops and it dies. So i guess feul relay? Where should i go from there?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Apr 27, 2013, 12:38 PM

Post #7 of 10 (1957 views)
Re: 1993 chevy astro keeps dying on me Sign In

That's a pretty ridiculous assumption. There are dozens of ways for that to happen. You need to start monitoring fuel pressure, injector power, injector pulse and coil pulse.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Redneck1983
Novice

Apr 27, 2013, 3:12 PM

Post #8 of 10 (1949 views)
Re: 1993 chevy astro keeps dying on me Sign In

okay fine that's a fair assessment maybe I should have given you a few more of the facts in the 1st. post sorry the van has been sitting for 5 to 10 years the fuel pump was replaced about three months ago and its still not wanting to pump up like it's supposed to. when you posted the redo of the codes and I saw fuel pump relay could be it made me start thinking I got to looking in checking things out more that's when i saw the gas just stopped sparing. Played around with it for awhile still not sure its the relay but i think its safe to change it n e way just n case!!


Tom Greenleaf
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Apr 28, 2013, 3:18 AM

Post #9 of 10 (1932 views)
Re: 1993 chevy astro keeps dying on me Sign In

Slow down sport. If you aren't sure by FIVE years how long this has been sitting then there's so much unknown this is going to be tough. Just sitting that long unless absolutely properly stored, fuel removed and more there would likely still be a host of problems.

How was it stored if you even know? Was fuel removed? Was it dry storage in garage or just outdoors?

Now I don't know how to suggest anything without some knowns about this and if all is unknown a lot of things are possible,

T



Redneck1983
Novice

Apr 28, 2013, 6:10 PM

Post #10 of 10 (1916 views)
Re: 1993 chevy astro keeps dying on me Sign In

Ok so i put the relay from pick and pull on today it seams to be running better for now n e way!! Wish me luck.






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