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You are in the GMC Safari & Chevy Astro
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GMC Safari, Chevrolet Astro, GMC Safari Cargo, Van
#13 of 41 1999 Astro 4.3L OBD code P0117
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.
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.
#15 of 41 Re: [smokeybarnable]
Feb 01, 2006 (7:49 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.
#16 of 41 Re: [smokeybarnable]
Feb 02, 2006 (9:13 am)
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.
Feb 02, 2006 (10:06 am)
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?
Feb 02, 2006 (5:20 pm)
bought a new battery...used hairdryer on ignition coil,sprayed ether in air intake and only makes a loud popping sound...taking a beer break.
Feb 04, 2006 (11:27 am)
put more gas in and replaced fuel filter...still doesn't start.
Feb 07, 2006 (3:03 pm)
i took the ignition coil out and did the ohm checks listed in repair manual. The coil passed all tests. So I hooked it back up and took one of my front wheels off to access the spark plugs. I took out one plug and hooked it back up to the wire and then cranked the engine....the spark plug didn't spark! I double checked that the wire from the coil to the distributor is sparking...it is.
Thats where im at now. Haven't checked fuel pressure yet
#21 of 41 Re: [smokeybarnable]
Feb 08, 2006 (9:11 am)
If you are getting spark from coil to distibutor but not to plugs, The suspect would be the cap and rotor or the plug wires. But, since there is no firing going on the wires are probably fine its got to be under the distibutor cap.
#22 of 41 Future Issues with my 02 safari
Mar 03, 2006 (2:47 pm)
I recently had several instances where the check engine light came on and went off. when investigating it was a misfire on #5 caused by wear on my plugs and wires. I have it fixed but am now wondering what else might need attention in the future. It only has 50K miles on it and I have kept up on the maintenance.