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GMC Safari/Chevy Astro Starting/Stalling/Idling Problems

210 messages,  Last post on Apr 30, 2013 at 10:37 AM

You are in the GMC Safari & Chevy Astro Forum.

What is this discussion about? Chevrolet Astro, Fuel System, Van


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Messages Page 19 of 22

#174 of 210 Re: 1994 Astro stalls [94astroext] by Steve_01

Mar 27, 2010 (9:16 am)

Replying to: 94astroext (Mar 23, 2010 7:33 pm)
On that note, years ago I had a similar problem with my 97 Astro running rough and not starting. It turned out to be the coil wire shorting out against the transmission fluid dipstick tube. If I look closely at the tube, I can see where the high voltage arcing has slightly eaten away at the metal. I wrapped the tube with the same type of foam insulation used to insulate the hot water pipes in the basement. That took care of the problem.

#175 of 210 1995 GMC Safari Not Running Smothly by irish_john

May 18, 2010 (3:38 pm)

Hi all, I'm a new kid on the block, Just joined today............. What I would like to know is if any you guys out there be so kind as to give me some advice about my 1995 GMC Safari?
I found her running very bad with regards power, she would take off ok but after she change into top gear she seems to lack in power, and also I have notice like a rattle or a kinda chain type noise when I go to excelerate with my foot right down on throttle ? As a result I am scared to push her to hard in case I cause more problems. I have just change the oil on her and put new oil filter on and also changed the trans fluid and put new air filter in, but till she is not running well at all, So at the weekend I got me mate to fit a new fuel filter on her hopeing that this will sort it out, but again she is just the same lacking in power???...............
So do any you guys have any idea as to what could be my problem with her?
I live in Belfast, Northern Ireland, and I get all my parts from a dealer in England, so I hope its not going to cost me the earth to fix
Thanks so much for you time in reading this for help!
John, Belfast, Ireland.

#176 of 210 Catalitic converter-? by bwgmcvan

May 18, 2010 (4:36 pm)

DId you check to see if your catalitic converter is clogged?
Brian,NY

#177 of 210 reply by irish_john

May 19, 2010 (4:05 pm)

Hi mate, thanks for ur reply, Ihave not checked the cat converter? how do i go about doing this???
Please help!
Johnny.

#178 of 210 cat conv, by bwgmcvan

May 20, 2010 (7:03 am)

Check it night, see if it is glowing "red hot" this is an indication that you have a clogged Cat converter,, builds up with carbon, that is one way, look on the net and see if you can't come up with some way of deciphering how to check the cat converter
 
keep us posted mate,
Brian

#179 of 210 Rough idle when stopped at light by russ75707

Jun 02, 2010 (3:39 am)

I have a 1995 Astro,4.3l z ,cmfi.I have had a problem with the van idling rough at stoplights,but when shifted into Park or Neutral the damn thing runs smooth as can be.In an ongoing attempt to find and fix this problem,(i have 250,000 +)I have never eliminated problem by cleaning egr,iac,etc,fuel pump went amid all this,of course,I caught this one b4 I got stranded yessss,replaced pump,filter,thorough carbon cleaning,tune up,ran sea foam through everything,nothing has made a difference.I wonder if the torque converter really is sticking?Thedistributor shaft feels sturdy,but whadda I know,how can I rule that out?Is the best way to rule out sensors is to unplug them one byone?I have yet to get a code other than 12 from pins on obdm-wan (whatever its called) connector.i'm starting to get pissed now,I broke knock sensor and temp sensor thing trying to reach through beside motor,had to rig those back after I identified them.Now what?Anyone.....anyone......anyone at all.....No,I will not burn it!!Shameful thoughts,does anyone have any ideas that might help me locate and stomp the s**t out of this meddlesome problem for good?Cat converter is cleaned out too

#180 of 210 Re: Rough idle when stopped at light [russ75707] by bwgmcvan

Jun 02, 2010 (7:41 am)

Replying to: russ75707 (Jun 02, 2010 3:39 am)
Russ,
   Check you wires/coil/plugs- there could be carbon build up in the cap,, or wires that are not shielding the spark and arcing.
Brian

#182 of 210 94 Astro rough idle & stalling at lights by Guildman

Jul 12, 2010 (8:41 am)

I know this issue has been addressed but I don't know what to try next.94 Astro 162k starts to idle rough at stops and stalls with more frequency at stop lites,only after car is warmed up.Have removed and cleaned egr,Noticed egr valve was not moving freely,after cleaning problem still there.Valve did not stick when fully depressed to solinoid in egr.Is that a sign it needs to be replaced?Whats the most likely next problem to check? No check engine lite comes on.Mechanic checked dist cap, plugs,wires,and said they were all good.He didn't want to start throwing parts and money at it cause there are are to many possible causes.Saw someone had a fix with vacuum hose & elbow at pcv.Could it also be the IAC?Have new tires and so many new parts I hate to give up,everything else is running great.Any help is greatly appreciated

#183 of 210 Re: 94 Astro rough idle & stalling at lights [Guildman] by Guildman

Jul 12, 2010 (11:14 am)

Replying to: Guildman (Jul 12, 2010 8:41 am)
Can't edit message so I'll add to it.As with Russ post previously,when I shift to neutral or park at a light problem problem dissipates or mostly gone.4.3 llter cmfi w engine.No hesitation or misfire when driving,only at idle after engine heats,and problem is intermittent.

Messages Page 19 of 22

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