Last post on Nov 27, 2013 at 6:06 AM
You are in the Chevy Express & GMC Savana
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Chevrolet Express, GMC Savana, GMC Savana Cargo, Van
#56 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jun 13, 2010 (4:52 am)
Sorry to hear about your problem with the van.
I would start with the basics:
Do you have fuel pressure? The electric fuel pump needs to supply between 55 and 62 PSI. depending on the size engine you have,
Do you have spark? You can purchase, a spark plug tester with a spring clip that will hold the tester on the metal part of the engine so you don't get shocked. You should have good spark.
Do you have an OBDII tester. Some of the better ones will help with codes that the computer may be showing. I have an AUTOTAP OBDII tester. It works with a laptop and provides a lot of information.
If the engine while cranking sounds like it wants to start it could be the crank position sensor.
Several people have listed problems with the ignition switch and the security light in previous articles listed here in the forum.
I changed the intake manifold gasket on my 5.7, V8, 2002 van and had a loose ground that I did not tighten completely. The gauges and warning lights did not work, engine would start and run when there was a good ground and when the ground ws lost the computer would just shut down, no codes.
#57 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [van3500]
Jun 13, 2010 (6:40 am)
thanks ! I am going to print this and take it to the machanic. I think he's at his witts end with my van , he doesnt even want to talk about it anymore ....can't say I blame him but this has gone on way too long.....years and years.
I will let you know, but I thought it funny that my van also had to have the intake manifold gasket replaced, so maybe just maybe thats it also.
#58 of 108 02 express security light problem
Jun 23, 2010 (7:49 am)
6.5TD-215K ml. For about last 16mos dash security light comes on intermitantly Just recently seems to come on more often and stays on longer. Sometimes, for better part of the day. So far, no starting or drivability problems. But it has me looking over my shoulder waiting for the shoe to fall. After reading a few elated posts, I think my 1st move is to get a new ignition key. Any other suggestions appreciated. FYI-just replaced crank shaft pulley 209K. If you haven't replaced yours, do it before the clanking starts. $125.00 cheap insurance.
#59 of 108 2000 Chevy Express 1500 - 5.7 wont start
Jun 28, 2010 (3:48 pm)
I think it may be a fuel filter problem will replace this weekend, but if you shoot carb cleaner in air intake it starts and keeps running, but will not start without a shot, sometimes will start if you turn off and back on immediately.
Hoping it is not the fuel filter, car seems to run OK once it has started.
#60 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jun 29, 2010 (6:58 pm)
took the 1996 express van back to the mechanic and we put the computer that reads codes on it. It only said egr as a code.
This van starts when cold but not on the first crank, maybe the second or third and only if the engine is cold. When driven it runs great no problems at all ....goes down the road very good even . But if I stop to shop and come back out it will not start till its cold again , then it will start everytime (cold).
He checked alot of things and said the fuel pump relay is not being activated when the key is turned on. The fuel pump runs thou. This van has had so many new parts added to it I am sick of throwing money at it and its not the problem.
What does anybody think of the fuel pressure regulator leaking ? like the vacumn hose attached maybe has a leaky diaphram ? or the fuel injector leaking ?
I need serious help with this so any and all thoughts are asked for ! Thanks in advance....
#61 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jun 30, 2010 (3:58 am)
The ERG is for the exhaust gas recirculation. There are a couple of sensors that can be monitored. The EGR valve may be hanging up. I read through some of the diagnostic information I have and the engine temperature sensor works with the EGR and O2 sensors.
When the van does start does it idle down nice or do you have to play with the throttle to keep it running?
I have OBDII software from Autotap. It came with a trouble shooting guide and information on the sensors. They provided a link to a web site that may be able to help.
There may be a fee for their service I do not know.
#62 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [van3500]
Jun 30, 2010 (5:00 am)
van3500 thanks tons for even replying with some great info, to answer your question ,when running the van idles down nicely and does run funny. I never have to play with the throttle.
It starts after several cranks when cold but will not start when hot till it cools off for about an hour, then starts on the second or third key turn.
What do you think about something like vapor lock ?
or even internal fuel leak ?
Hasn't anybody had this happen and figured it out yet ...
#63 of 108 Smoke from fan blower switch
Jul 05, 2010 (3:05 pm)
2000 express 1500....... the other day smoke came from my better halfs fan switch got a switch put it in soon as it was turned on started to smoke shut it right off ..... so since i had also picked up a blower resister after she told me that the fan didnt work on HI and screwed up sometimes at other speed settings thats common of a bad resistor put it in problem solved for 2 days any way today smoke again from the switch anyone have any info i will start looking for bad connections at the blower motor and so on thanks
#64 of 108 Re: 1996 Chevy Express Van wont start and I need help ! [donzi428]
Jul 15, 2010 (8:23 pm)
Hello all. I am new but have also suffered with a "different running" 99 Savana 5.7L Vortex conversion Van. It was purchased as a project van because it would run sometimes and sometimes not. It turned out to be the fuel pump, or so I thought. It has 180K on it and the pump was replaced once in that time. I have what most may call an "extensive" background in anything that runs. Past experiences have taught me that the only good fuel pump is from the OEM. So i replaced it and was ok, or so I thought. Van would run good and then not restart when cut off and restarted. I had voltage and no pump pressure. After unsuccessfully trying to find issue i sent it to local dealer. Here comes the punch line. They replaced the wiring connector down at the front of the fuel tank belly pan. WHY? Because in my diagnostic steps I found out to get the van to restart I needed to unplug that connector and plug it back in and the vn would crank. The dealer found that the connector was heated up in one spot and melted. The wire in that area would loose contact when it got hot and top the pump from running. haven't had THAT problem since the connector was replaced.
#65 of 108 Re: Van started/stalled then ran great for a year until now! [veggs2000]
Jul 15, 2010 (8:40 pm)
I see the last entry was a while ago but maybe I can help someone who is searching this thread.
I took a trip with my van after replacing radiator, ECM fuel pump and tuning it up. It ran fine on the trip but once home i seemed to get rough and have a miss. Based on past history with the 5.7L Vortex I went after the intake gaskets. Found out they were already replaced. Problem seemed to still be there. Gave up and took it to the dealer and they gave me heart failure with their "quote". I did replace the crank sensor.( If this is done and the bushing in the timing cover comes out with the bolt try gluing it back in there with silicone. Worked for me).
Fast forward a year and I find out part of my problem. Had both Cats removed for"inspection" and was surprised when there was not one ounce of catalyst in either one. Muffler appears good and van does have great power. I can only guess when the Cats failed they were plugging up the exhaust and causing the van to chug and die out. Could be the reason for the noise in the exhaust.
hope this helps somebody save their nerves.