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GMC Safari/Chevy Astro Warning Lights

37 messages,  Last post on Aug 12, 2008 at 4:58 PM

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What is this discussion about? GMC Safari, Chevrolet Astro, GMC Safari Cargo, Van

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#8 of 37 Re: Loosing my mind 1994 Safari [braedhead79] by stonebusi Aug 19, 2005 (7:05 pm)
Replying to: braedhead79 (Aug 16, 2005 1:40 pm) This problem sounds a lot like dirty, clogged or malfunctioning fuel injectors. The reason the fuel additive works for a while (if I'm right) is because it temporarily cleans the injectors. I've never had this problem with my Astro, but have experienced it multiple times in other vehicles. The "Service Engine" light would come on because you're giving the computer a misfire fault. I don't know how big a deal it is to remove the injectors, but if it's tough you might first check plugs and wires. Replies to this message: disastro (Nov 07, 2005 11:41 pm) billb4 (Nov 08, 2005 6:36 pm) dave8697 (Nov 09, 2005 1:23 pm)
#9 of 37 Re: Loosing my mind 1994 Safari [stonebusi] by disastro Nov 07, 2005 (11:41 pm)
Replying to: stonebusi (Aug 19, 2005 7:05 pm) I see that it was august when u had this problem did u get it fixed. because i have a 96 chevy astro i have replaced the fuel pump and fuel filter and it still won't run any suggestions would be appriciated. thanks Replies to this message: billb4 (Nov 08, 2005 6:36 pm) dave8697 (Nov 09, 2005 1:23 pm)
#10 of 37 Re: Loosing my mind 1994 Safari [disastro] by billb4 Nov 08, 2005 (6:36 pm)
Replying to: disastro (Nov 07, 2005 11:41 pm) Spray starting fluid into intake hose behind the air cleaner in front of the engine. Now if you get no attempt at starting like it wont try to fire then you have no spark or ignition. Now it could be the module that controls the ignition and this will take out the ignition coil both could be hosed. My 99 Safari is in the dealers shop as we speak and this is what they told me, all for only $450.00.I'm lucky I can afford it, but I hate to pay someone when I can fix it myself, but I couldn't. So maybe this will help you or someone else. Good Luck BillB4 Replies to this message: dave8697 (Nov 09, 2005 1:23 pm)
#11 of 37 Re: Loosing my mind 1994 Safari [billb4] by dave8697 Nov 09, 2005 (1:23 pm)
Replying to: billb4 (Nov 08, 2005 6:36 pm) You can get the code read free at autozone or advance auto parts stores. I have 2 astros. 87 and 98. My 87 (175,000 mi)died a minute after starting it last december. The check engine light came on and the code read lean or rich mixture. The coolant temp sensor was bad. It had previously failed at 48,000 miles in 1991. It is hard to get to with rear a/c lines in the way, but the $7 part screws into intake manifold into the coolant passage. Van started right up and the 3 mpg mileage increase from then on suprised me. I could hear my fuel pump prime and I had spark.
#12 of 37 '00 Safari Injectors, Catalytic & Computer by gmloyal Oct 30, 2005 (5:48 am)
Long story short... 67k miles, Engine light came on, mechanic diagnosis Catalytic Convertor failing. (No smell or other symptoms...) He suggested misfire would contribute to CC failure, & a tune-up might help. This mechanic also opined that the Vortec engine was all-around buggy & a pain in the nect. I decided to ponder the CC problem & wait; tune-up done by different mechanic. (location convenience, not mechanic choice) 2nd mechanic claimed that "false readings" are common among the computers for this model, and suggested driving a while, then checking again. Engine light came on 2 wks later, but code was for 2 injectors failing. Same mechanic said that this model has a plastic (!?) housing or sleeve that fails (obviously, if it's true...!), and that it's causing the misfire which might in fact contribute to gradual CC failure. QUESTIONS: (1) Any chance the computer board is faulty, failing, and/or are they known to be unreliable in this model? (2) Is the fuel injector "plastic" thing true, and is there a better fix, i.e., different type of injectors or preventative measures to keep them from failing again? (3) In the "old days" we'd smell the CC failure and the vehicle would run like crap - if it's failing, why are there no other symptoms? HELP!!!!!!!!! Thanks!
#13 of 37 1999 Astro 4.3L OBD code P0117 by qloco Feb 02, 2006 (7:25 am)
I have a 1999 Chevy Astro with 120,235 miles. My service engine soon light is on. Funny thing is it comes on and off. I took it to Autozone and they tell me its code P0117 = Engine Coolant Sensor Voltage Too Low. I've changed the coolant sensor by the ERG valve and the temperature sensor by the manifold. I was told it could be a grounding problem. But I have no idea on how to check that. I have no idea now on what to do next to correct this problem.   Thank Qloco.
#14 of 37 by smokeybarnable Feb 01, 2006 (4:21 pm)
My 99 astro van won’t start after sitting a few days. It happened about a month ago too. Both times I didn't have very much gas in the tank and the weather was around freezing and raining. Last month I eventually got it started by jumping and cranking if for about three hours. It smelled flooded. It's a 4.3L fuel injection engine. This time after trying to jump it, it just won't start..kinda feels like it wants too. It diesels a little after each attempt.   When the key is in the on position the service engine soon light is on and the check gauges light is on. I did a scan (with my battery almost dead) and it said the scan was successful but no trouble code found and said the MIL indicator was off?   Could it be my battery just needs to be charged or replaced? Why is the check engine light on but no error code when scanned? Should I try a scan with a fully charged battery?   Thanks for any help.   Smokey Replies to this message: md333 (Feb 01, 2006 7:49 pm) smokeybarnable (Feb 02, 2006 10:06 am) cob (Feb 02, 2006 9:13 am) smokeybarnable (Feb 02, 2006 5:20 pm) smokeybarnable (Feb 04, 2006 11:27 am) and 4 more...
#15 of 37 Re: [smokeybarnable] by md333 Feb 01, 2006 (7:49 pm)
Replying to: smokeybarnable (Feb 01, 2006 4:21 pm) I have a 97 Astro and have had similar problems with the engine not starting when it is cold and damp. I believe the problem is the ignition coil. I replaced one last year and one cold damp day it again failed to start. Point a hairdrier in the area of the coil(behind the alternator) to dry it out or spray wd40 on the wire connections leading to the coil. The moisture drains the voltage and doesnt allow enough spark to start. Replies to this message: smokeybarnable (Feb 02, 2006 10:06 am)
#16 of 37 Re: [smokeybarnable] by cob Feb 02, 2006 (9:13 am)
Replying to: smokeybarnable (Feb 01, 2006 4:21 pm) On my 1997 the check engine and check gages light stay on if the key is in the on position and the engine is not running. They are just resetting themselves for when the van is started. If the lights don't come on before starting than it signals there is a problem with the systems. I believe the ignition coil may be your problem. I would also check the distributor cap for cracks. I have read other posts where people had damp weather starting problems caused by mosture in the distributor. Replies to this message: smokeybarnable (Feb 02, 2006 5:20 pm) smokeybarnable (Feb 04, 2006 11:27 am) smokeybarnable (Feb 07, 2006 3:03 pm) and 3 more...
#17 of 37 Re: [md333] by smokeybarnable Feb 02, 2006 (10:06 am)
Replying to: md333 (Feb 01, 2006 7:49 pm) Thanks cob and md333! I will try that today. Is there any test I can do with a volt meter that would tell me if the ignition coil is too damp?

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