You are here: Forums Vans & Minivans GMC Safari & Chevy Astro GMC Safari/Chevy Astro

GMC Safari/Chevy Astro

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

You are in the GMC Safari & Chevy Astro Forum. Your Host is Karens

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

Messages Page 48 of 189 1 ... 45 46 47 48 49 50 51 ... 189 Prev Next Last

Go To Msg # Search This Discussion

#469 of 1889 The temperamental starting problem by cschmieg1 Sep 19, 2002 (5:18 pm)
I too have the same problem.Van starts in morning and after sitting for about an hour.I could not hear fuel pump kick in either.I took my van to well known dealer yesterday and he put it on the machine..It was the fuel pump..I am dropping the tank and doing it myself next weekend..Parts are only $40..Dealer wanted $300 to fix..I had to change the fuel pump at 94,000(which dealer did. Now i have 150,000 on my 94 Safari..I also have a bad motor vibration..dealer informed me i needed 2 new motor mounts..I too will change them only, $11 a piece..Good luck and hope that fixes your problem.
#470 of 1889 Thanks to cschmieg and coonhound by 67firebirdconv Sep 19, 2002 (7:45 pm)
I appreciate the help you all have extended to me on my Astro problem. My fuel pump is still working as I can hear it when the key is turned on. Also, when I had the code reader on it, it indicated no problems with the fuel pump, although I'm not sure if it can check anything besides an on and off condition....does the code reader measure fuel pressure/flow? Anyhow, I have two possible causes now (see msg #174 and now yours). I wish this van was as easy as troubleshooting my 67 Firebird.
#471 of 1889 Safely dropping the fuel tank by jlflemmons Sep 19, 2002 (8:44 pm)
You may already know this, but let me give you some hints. Obviously, get as much fuel out of the tank as possible before you start. Then, take your jumper cables and clamp one end, red and black, to a known good earth ground. If you are working in the driveway, drive a piece of rebar or such well into the ground and clamp to it. Then take one of the other end clamps, say red, and clamp it to the frame of the vehicle. Take the other clamp, black, and clamp it to the gas tank. This way, you cannot have a voltage potential between the gas tank and the van when you seperate them, and therfore, no spark. Since the tires of the vehicle insulate it from the ground, the clamp to the frame will offer the added protection of bleeding off any charge on the body of the vehicle.   I know you probably already knew this, but any spark when removing a gas tank is not going to turn out good. Be careful.   Jim
#474 of 1889 Need help with 1998 Safari by hemetces Sep 22, 2002 (4:26 pm)
I have a 1998 Safari, the "service engine soon" light comes and stays on the moment I fire the engine and starts blinking as soon as speed goes higher than 30mph. Autozone diagnostic shows "O2 sensor heater circuit malfunction" and "cylinder 5 misfire detected". Don't have problem firing the engine, but it does vibrate while idle. The sensor part seems obvious, but I am clueless about the cylinder issue. Any ideas?
#475 of 1889 Re: hemetces misfire by coonhound Sep 22, 2002 (5:37 pm)
The code sensor picks up misfire almost immedietly I store my 97 a lot and get misfire on startup after 1 to 2 months.   There are three (3) count em O2 sensors at $70.00 per ea. at Auto Zone. Which one????? good question. But if you have 70,000 miles or so on the van What's $200.00 or so.   I would also buy the special socket at about $7.00 and go to work. The anti sieze is on the new Bosch O2 sensors.   All three are easy access from underneath. But a little van elevation is recommended.   The heart of the system is the O2 sensors at GM. Let an O2 sensor malfunction and GM shuts you down. If you have been using premium fuel. Shame on you. the fuel pressure regulator tires out. the assembly including all injectors is about $550.00 material cost. The injector system is an assembly. The problem component is the fuel pressure regulator. But it is replaced by removing the top intake manifold, there are two, upper and lower.   Welcome to the wonderful world of modern technoligy.
#476 of 1889 Astro misfires and SES light on by marcb4 Sep 24, 2002 (11:49 am)
GM has a TSB out (00-06-04-003A, dated December 2001) that describes the misfire/rough idle and SES light problems. It's due to a stuck poppet valve in the fuel injection. The service manager I talked to said that the fix (which is a cleaning procedure) is covered by GM up to 100K miles, since it's a known problem on the V6 4.3 and V8 5.0 and 5.7 engines. He recommended using different fuel brands (switching brands on each fillup) and adding a fuel injector cleaner every 5K miles or so.
#477 of 1889 Rough idle and misfire by coonhound Sep 24, 2002 (3:55 pm)
I have that problem when the van is not started for a month or two. But it's OK after warming up a bit. And I reset the computer and go on my way.   I have been hesitant to use extra injector cleaner due to the plastic injectors and the known problems with the fuel pressure regulator. But perhaps the cleaner is the solution to all the problems. That would be wonderful. I know that California fuel, and premium fuel cause fuel system problems.   Anyway, I'll try some injector cleaner and see if it helps.
#478 of 1889 "It's a sturdy, moderately priced van," by steve_ HOST Oct 04, 2002 (11:03 pm)
GM lowers Safari, Astro base price Steve Host SUVs, Vans and Aftermarket & Accessories Message Boards

Messages Page 48 of 189 1 ... 45 46 47 48 49 50 51 ... 189 Prev Next Last

Go To Msg # Search This Discussion

You are here: Forums Vans & Minivans GMC Safari & Chevy Astro GMC Safari/Chevy Astro