Last post on Oct 27, 2013 at 1:07 PM
You are in the GMC Safari & Chevy Astro
What is this discussion about?
GMC Safari, Chevrolet Astro, Van
#1506 of 1973 I love my GMC Safari .... Please help with any hints
Nov 25, 2006 (12:09 am)
I have a 1995 gmc safari... they recently change water pump, gas pump and fuel filter but now its leaking gas down the exhaust.... does any one know why this is happening .... my van its been parked on my drive way for too long now and i miss it very much i need to get it running again before starts snowing please if anyone knows i will appreciate any recomendations.... i heard it could be the fuel presure regulator... what u guys think??? can you give me any hint??? does have this happen to anyone around??? I love my van so much I am desperate to get it fix soon
#1507 of 1973 Re: 12V test light completes a circuit [hardwayalpha]
Nov 25, 2006 (8:23 am)
Well I am back to trying to get this van to start. All wiring to starter checked out and engine is starting, belts are turning, fan is turning but the "engine won't rotate" as this appears to be the symptom. I tested and replaced ignition coil. Turn on key and hear the fuel pump working but can't test pressure(not running) except when car is off no gas spits out of the relief valve but when the pump is energized(key on) gas spits out so it appears the pump is working just can't tell how well. The engine now makes a puttering ("plop..plop") sound. Someone said I didn't have enough gas fumes so I filled the tank up and the plop got very loud and smoke came out of the engine compartment. AAt this point I don't want to have it towed in...I need to start this van. Any help is appreciated?
#1508 of 1973 94 Asto Van- Hatch Jammed- Left side won't release
Nov 28, 2006 (9:34 am)
I have an automatic release, back hatch on my 94 Chevy Astro Van and I can not open the hatch. The left side seems to be frozen and will not release. I would really appreciate any suggestions on how to fix this problem as the dealer wants $100 just to diagnose and I am hoping this is an easy problem to fix.
#1509 of 1973 Re: 1991 Astro RS running fine at 212,400 miles [hansienna]
Nov 28, 2006 (9:10 pm)
I am a 6' 3" large guy and the astro drivers seat (neither manual or power)went far enough back for leg room for me to consider driving a long distance, but 4 bolts to remove the seat and 4 more to remove the track and its a simple matter to relocate the tracks rearward on the seat bolsters about 4 inches, they are bolted together and there is room to relocate them by simply drilling 4 new holes and re installing them. The same could be done to the passengers seat also to accomodate a large rider. have done this to 2 different astro vans and had no problems.
#1510 of 1973 temperature sending unit
Dec 02, 2006 (5:02 am)
99 astro van, where is the temperature sending unit located on the engine block. temp gauge not rising past 100, passenger compartment appears to have good heat. any ideas?
#1511 of 1973 Re: 94 Asto Van- Hatch Jammed- Left side won't release [tracyjohnstone]
Dec 04, 2006 (8:51 am)
i had the same problem on my 94. you have to get the door open first then at the top of the door where the wires run into the door peel back that cover and one of your wires are probably broke in two. one of mine was broke and the other was ready to brake.
Dec 05, 2006 (12:05 pm)
ok i have an interminent problem with the fuel pump not working at all. ok somedays i kicks in and the van starts and not a problem. otherdays it wont start no fuel, the pump makes no noise. i have chenged relay switch, fuel pump, fuel filter, i have cleaned all grounds. and when its not running u check every thing and i wont start, but the next after not toching a thing the fuel kicks in and it runs great. i am wits end guys any help would be much appreciated.
what am i missing what makes fuel pump work one day and not the next and work again another day
(95 safari awd)
#1513 of 1973 Re: fuel pump problems [guest2001619]
Dec 05, 2006 (6:08 pm)
I am having a similar problem yet my van won't start at all.It just turns but won't turn over . When your van won't start is the belt turning and the starter engaging but engine won't turn over? This will help me decide to drop the fuel tank and change out the relays and pump which I have not done yet. Look for my posts for the history.
#1514 of 1973 Re: fuel pump problems [fixitrod]
Dec 05, 2006 (7:02 pm)
mine turns over and every thing it just doesnt start or run, if yours is turning over spray starter fluid in the carb if it runs for that little bit your not getting fuel and thats my problem. i just got done taking mine for a long drive ran great but im afraid the second i put it back on the road no fuel again!!!
#1515 of 1973 Re: fuel pump problems [fixitrod]
Dec 05, 2006 (8:20 pm)
Replying to: electricdesign (Dec 04, 2006 6:48 am)
Thanks for the reply. This is a GMC SAfari V6 with 260000 1995 with Auto tranny. I have posted info on the Safari site and responses ran out as to what to try.
When the key is turned the van makes a sound of the engine trying to start . I can see the belts turning and this has been described to me as "starting" but the engine will not "catch and fire up". This appears to be cranking but not turning normally.
Yes the starter worked on two benches and I as well had it refurbished and replaced the solenoid.
I can do the fuel compression check. I thought the engine had to be running for that so I will get my hands on a test unit and check it.
The van has new distributer and rotor and I replaced the plugs and wires but will check the "spark". I replaced the ignition coil because the resistence was not to specification per Haynes.
I replaced the fuel filter yet have not dropped the tank to clean it out. I would hate to think how I got "trash" in my tank. The van has been vandalized previously and there have been some mischief going on in the neighborhood.
The engine was running very well prior to the "rough idle situation...we had driven the van to Disneyworld in May. Actually while I was working on the rough idle I applied some fuel system cleaner and the next day or two is when it stopped starting...hmm? Any suggestions?How do I check the valve timing?
OK, First things First, lets get the terminology straight so that we are all speaking the same language here. Your engine is "Turning over" when you turn the key to start, that means the engine crankshaft is rotating and all related parts are moving. You engine "Turns over" but does not "Start". OK, we got that? Now, when the engine turns over, does it seem to turn over at about normal speed? Meaning does it sound very sluggish when it turns over, or more like normal? Next, I'm assuming it turns over about normal, and for now we assume it has spark, so the next logical thing to check is "Fuel Pressure" NOT "Fuel Compression" as you said. You use a strange mix of words that complicates simple things. Please try to stick with me on the correct terminology. You check the fuel pressure with the ignition on and engine off, because the electric fuel pump in the gas tank starts when you turn on the key. Do you hear the electric fuel pump start to run when you turn on the key? It should run for a couple of seconds or more, then stop as it builds up pressure. Do you hear it? If you DO HEAR it, the proceed with the "Fuel Pressure Test". If you DO NOT HEAR the fuel pump, then do the fuel pressure Test" to verify that there is indeed NO fuel pressure, then check the fuel pump relay and check the electrical circuit, there may be a reset button for the fuel pump. Consult your manual for locations. Once you have the fuel pump running and have fuel pressure at the fuel rail pressure test port on the engine, check to see how MUCH fuel pressure you have, I would guess between 30 to 60 pounds, but check your manual to see what the specs say the prssure should be. If pressure is ok and within limits, then proceed with further diagnosis. If fuel pressure is low, you need to find out why. You said you already replaced the fuel filter, but did not mention if the fuel that came out was dirty or not. You should always carefuly pour the fuel from the old filter over a white paper towel and look for any dirt, and Please put out your ciggarett before you start doing this! No open flames or heat sources anywhere near where you are working, Safety First! If there is dirt or odd color liquid, then you may need to pull the fuel tank, best to do this with the tank almost empty. The electric fuel pump in the tank has a filter/strainer on it that can possibly get clogged. It may need to be cleaned or replaced. If you have a problem with vandals in your neighborhood, you might need to get a locking gas cap. Once you determine that the fuel system is good and you have good fuel pressure at the fuel rail pressure port we will go farther with this diagnosis.
Next things to check if no start after the fuel pressure is known to be good:
#1 Ignition - Is there Good Spark at all the Spark Plugs? Are all the spark plugs clean and dry? (you can't fire dirty or fouled spark plugs)
#2 Check to see if fuel is getting into the engine - Spray a little gasoline or starter fluid into the Throttle Body intake while cranking the engine to see if it tries to start that way. If it tries to start, and you know you have good fuel pressure in the fuel rail, then there is a fuel injector problem or throttle Body Problem. If still no start, continue further diagnosis.
#3 Check to be sure the engine has the proper cylinder compression pressure in each cylinder. All cylinders should be within 20% of each other, and not low overall, check your manual for compression specs, I would guess that anything below 140 pounds would be low.
Let us know what you find.
P.S. and Yes, Disney World is very nice this time of year, I went there the day after Thanksgiving, it was really nice that day. March is good too, May starts to get too hot for me.