Hey guys, Trying to figure this one out. Truck went through a stage of will start wont start for about a week and finally decided on the wont. We changed the ignition control module, fuel pump and coil. Changed the spider and finally when we changed the ECM it started and ran for one day and returned to the same condition. So far I've been lucky to have spare parts from a parted out 96 safari van with the same motor. I just can't figure it out, if we spray starter fluid in the TB it starts momentarily. We are getting spark and we have 45 psi of fuel pressure which should be enough right? Someone give me some direction.

 

'97s require 60-66psi to start.
I had a weak pump at 58psi that barely started the truck.
You'll need a pump from a '97 to '01 to get the higher pressure.

 

Just put the pump in about 10 days ago and the parts store refuses to warranty it. they clain 45 is enough. I'm not argueing with you I just hate parts guys that think they know it all... Just sucks since the pump costs almost 3 bills.

 

If you have a pressure gauge, haul the truck to the store, and show the guy the pressure reading. 45psi is not enough. Here's a blurb I got from Dr.Hook, a mechanic who knows these engines and injection systems inside-out.


The “W” engine code on 1996 and newer uses Central Sequential Fuel Injection, (CSFI) controlled by OBDII engine controls. There are 6 injectors that are centrally located inside the plenum. There is a fuel line connected to each injector; at the other end of each line is a plastic nozzle with a spring loaded poppet valve. Each line is routed to a machined passage in the lower intake manifold that leads to the back side of the intake valve. The injectors are fired sequentially, just like the firing order of the engine. With the ignition in the RUN position, engine OFF, and the fuel pump running, fuel pressure must be 60psi to 66psi and must remain above 55psi for 3 to 5 minutes after the fuel pump shuts off.