Service engine soon

Tiny
SIMONK
  • MEMBER
  • CHEVROLET ASTRO
I have a 92 chevy astro van, 4.3l 136000 miles. When I start after sitting for an hour, it smokes but stops rightaway may be in a minute. It is sluggish to take off and on a hill unless I accelerate hard. Service engine light came on and had it scanned for codes 13, 43, 45. I changed the oxygen sensor and did a tune up but no change at all. Please help.
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Friday, August 17th, 2007 AT 10:25 AM

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Tiny
SERVICE WRITER
  • EXPERT
If I remember right the older astros had an oil burning problem from bad valve guides. Is the smoke bluish?
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Friday, August 17th, 2007 AT 7:27 PM
Tiny
SERVICE WRITER
  • EXPERT
As much as I respect Techmans opinion, I am hesitant to agree with this one. Older van and engine flush do not make me feel too comfortable. If you loosen up the gunk and it falls into the oil pan and gets sucked up to the pump screen, you may loses oil pressure. And lose the motor.

Doing an intake cleaing as Techman suggusted certainly is a good idea, but still doesn't explain th oil burning as I understand it.
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Saturday, August 18th, 2007 AT 10:51 PM
Tiny
SERVICE WRITER
  • EXPERT
So defend your reply, don't throw stones. I have no problem learning something new.

Why is the engine smoking IN THESE CONDITIONS and what color is the smoke?

Why will an engine flush help?

What in the world does the carbon build up have to do with a smoking engine IN THESE CONDITIONS?

"Before I would worry about Service Engine Soon codes, I would dismantle the air intake and filter holder and scrub it"
-I know what you mean on your above statement, but what are you saying to scrub? and with what?

Why would you ignore the codes?

Maybe an intake cleaning will help the acceleration, but it will it help?

Peace brother,


http://www.2carpros.com/forum/automotive_pictures/30961_hippie_peace_1.jpg

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Thursday, August 23rd, 2007 AT 5:03 AM
Tiny
RASMATAZ
  • MEMBER
Hey, SW I remember this guy at Woodstock when he gave Carlos and Jimmy the doby-while Carol was doing her tunes. I thought it was Eric. It was a rocking place that day. Peace

Puff of smoke during initial start normally caused by worn out valve guides/seals and the oil will find its way in the combustion forming as carbon deposits raising the compression that will cause preignition and detonation.

He knock 13/45 due to contamination by changing it but 45 relates to the ESC equivalent to the old style of the canister's vacuum/centrifugal on a conventional distributor with contact points. A problem within the ignition advance and accelerator pump which is now known as the TPS will cause an hesistation and surging problem. Also to exagerate his problem could be a clogged-up converter bcuz of the snitchers are not working ruined by the oil.

Back in the 20th Century the CEL/MIL/SES along with its Parameters/Actuators was introduced to expedite diagnosis within the Electronic Engine Control as Ford calls it and GM with the CCC system. This is the starting point of troubleshooting back then and today it never changed. In todays technology the car is like talking to the tech thru electronic devices.
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Thursday, August 23rd, 2007 AT 6:26 AM

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