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GMC Safari/Chevy Astro

1889 messages,  Last post on Nov 13, 2009 at 9:04 AM

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

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#1827 of 1889 GMC SAFARI 03 by reyahk Jan 01, 2009 (7:19 am)
Hello ,I drove and park my van as usual and after 4 days was unable to start.The motor would turn over but not start.A mechanic advised me to change the distributor cap,rotor and I also bought new wires and plugs.After changing the dis cap and rotor the vehicle started first key,then he switched off to change the wires.... now after several tries vehicle started but with a missing or backfire sound.. wires was checked and yes correctly replaced... so now vehicle is starting but no acceleration power to move,so I was advised to have the distributor replaced with a new one which i did but with same result, vehicle starting but no power to move..... any idea? Replies to this message: n5445 (Jan 02, 2009 9:32 pm) morlog (Jan 04, 2009 2:25 pm)
#1828 of 1889 #1827 Reyahk by AlohaAstro Jan 02, 2009 (7:07 pm)
Since it seemed to run well after dist cap & rotor, I would strongly suggest dbbl checking the wire specs, integrity of the install and the possibility of new defective wires. Perhaps reinstall the old ones temporarily.   Good Luck
#1829 of 1889 Re: GMC SAFARI 03 [reyahk] by n5445 Jan 02, 2009 (9:32 pm)
Replying to: reyahk (Jan 01, 2009 7:19 am) I would check the fuel pressure. That is unless I'm missing half of the previous post. I dont know the reason why you started with the wires before fuel pressure.
#1830 of 1889 Re: GMC SAFARI 03 [reyahk] by morlog Jan 04, 2009 (2:25 pm)
Replying to: reyahk (Jan 01, 2009 7:19 am) Check to see that when you put the new wires in you started from the right hole. It sounds like you may be one hole out.
#1831 of 1889 Re: GMC Safari/Astro p0300 missing at 55mph [dsiever] by reyahk Jan 05, 2009 (4:41 pm)
Replying to: dsiever (Aug 11, 2008 8:56 am) MAke sure the wires are correctly replaced to the right cylinders. and the timing was properly done,if these things are done have a muffler person examine your catalic converter and exaust system....... good luck
#1832 of 1889 No Power stalling once warned up by csparrazza Jan 10, 2009 (6:33 pm)
95 Astro. Ran fine but set for about 5 mo. Had to buy new battery, While jump starting gauges, lights went crazy. Would not start afterwards. Fuel pump replaced, fuel drained. new filter. Tune up new plugs (Bosch P4) took those out rep. with AC OEM. New fuel filter , Bosch wires, Dist cap/rotor. OBD1 giving some odd readings from evap canister system. Replaced ECM/EPROM. Fuel pressure at 55-60. Car starts fast idle a little rough, rep. MAP sensor. Problem only occurs when it reaches operating temp. Temp gauge working so sending unit is OK. Pulled out EGR. no sig carbon pin worked smoothly. I'm running out of Ideas, The nice man at the Dealer said bring it in for $110/HR and we will help you. LOL. I do have a good mechanic $40/HR. Honest! but he is stumped also. Seem like some sensor is cutting the fuel once it is warm and the TPS is opened. Could it be the TPS? But the OBD did not show a problem with it. I hate to just start replacing sensors. O2 sensors seem to be sensing and switching well within voltage range. Any ideas would be appreciated. Replies to this message: jackyh (Jan 24, 2009 11:07 am) jferrantelli (Jan 24, 2009 3:53 pm) csparrazza (Feb 05, 2009 6:43 pm) dlm1954 (Jan 25, 2009 8:08 am)
#1833 of 1889 Re: No Power stalling once warned up [csparrazza] by jackyh Jan 24, 2009 (11:07 am)
Replying to: csparrazza (Jan 10, 2009 6:33 pm) I have had similar problems with my 2000 Safari. Had fuel pump replaced about a year ago, fuel filter and dist.cap and rotor and ignition coil and wires and tune up about six months ago. Everything seemed ok till a month ago, when I stalled in traffic. After that I have had trouble starting, now I will need a tow to go anywhere. Battery and alternator are fine, no engine codes. Starting stuff all works, and I can hear fuel pump come on but thats the end. I have spoken to 2 mechanics and their opinions are it could be: ignition module (mech no.1), mechanic no.2 said it is more likely wetness on the distributor. Try drying off the dist.cap and rotor and see it it works. It was very wet and cold when these problems happened. He said might need a new distributor as they get corroded. These are just ideas, I need to know what to do next as it is major bucks to even get to the engine and I am toying with the idea of trade in.
#1834 of 1889 Re: No Power stalling once warned up [csparrazza] by jferrantelli Jan 24, 2009 (3:53 pm)
Replying to: csparrazza (Jan 10, 2009 6:33 pm) Hey Guys how is it going. I could'nt resist in sticking my two cents in one this one. My 1998 AWD Astro did the same thing AFTER the fuel pump was replaced by a shop. I went berserk trying to find the problem. Stalling, towing to shop, etc. Here is the test ... Fill the van FULL of gas to the top. Drive it around. I guaranty you don't stall or sputter unitil you get under half a tank or less of fuel. Try this and let me know. My problem was the non-GM (aftermarket) pumps that you get from everywhere but the dealer, have a pickup (Not to be confused with the screen on the bottom), but an actual hose with a metal quarter sized round pickup that snaps into the channel where the screen is. Mine came loose and hovered half way up inside the pump body. When the van had less than a full tank especially on hills and turns it would sputter and stall because the quarter size pickup was sucking air instead of fuel. This literally drove me crazy for 8 months until I got disgusted and dropped the tank myself and took out the old pump and found the problem. I bought a new GM Pump and no more problems. You can reseat the pickup in the bottom of the pump but I don't guaranty it will stay seated..   Good Luck and let me know. My van runs great no problems at all NOW !!!   Joe Replies to this message: csparrazza (Feb 05, 2009 6:43 pm)
#1835 of 1889 Re: No Power stalling once warned up [csparrazza] by dlm1954 Jan 25, 2009 (8:08 am)
Replying to: csparrazza (Jan 10, 2009 6:33 pm) You might check your fuel pump realy on the firewall ab0ove the heater blower,or check fuel pump pressure when it stops. i'm seen these fuel pumps quit pumpimping after they warm up, I just replaced one on my daughters monte carlo last summer for the same problem.                                   DLM1
#1836 of 1889 REF to 1832 Stalling Issues by csparrazza Jan 27, 2009 (6:02 am)
Thank you for your replies so far I will look into some of your Ideas. I did end up getting an OBD code of 32 which is the EGR Valve. I have checked the ground and reference voltages to the valve they are fine, so I am going to replace the EGR valve. Got a good deal On Ebay new Delphi for $70. Waiting for it to arrive this week. Hopefully this will do it. I have also wondered about the Autozone fuel pump if it is working properly but the pressures are good. I will post the results for those interested. Craig S Replies to this message: dlm1954 (Feb 08, 2009 2:33 pm)

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