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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Unofficial on July 06, 2009, 02:06:21 pm

Title: Issues with my truck
Post by: Unofficial on July 06, 2009, 02:06:21 pm

Hey everyone, I haven't been on here in a while, a lot has been going on...

Well, my truck has been acting up for a while now. It will stall when decelerating to come to a stop, and when I'm switching into reverse. It's almost like the idle RPM is too low. There is a pretty noticeable hissing when I first start it up, and it's pretty loud when I accelerate when it's cold. It will slowly go away as it warms up, it seems. I can't find any vacuum leaks though. I've replaced the TB gasket where it meets the intake manifold, I've replaced the fuel filter, and I changed to 350 injectors and ECM. It's an '87 350 TBI with a 700r4 with a shift kit. I don't know if any of these could be causing problems, but I came across these the other day and I don't know what they are. Can anyone identify these? The first one is coming from my fuel pump relay and the other is coming from my fusebox.

Title: Re: Issues with my truck
Post by: VileZambonie on July 06, 2009, 04:37:47 pm

Fuel pump relay, test lead, connectors for CA emissions most likely not used.

What's your fuel pressure? Do you have access to a scan tool?

Title: Re: Issues with my truck
Post by: Unofficial on July 06, 2009, 07:17:15 pm

I have no idea what my fuel pressure is. Is there an easy way to test it? And what do you mean by scanner? Like a code scanner?

Title: Re: Issues with my truck
Post by: Unofficial on July 07, 2009, 10:32:49 pm

Anyone?

Title: Re: Issues with my truck
Post by: VileZambonie on July 07, 2009, 10:34:53 pm

Make your own scanner... http://winaldl.joby.se/

Title: Re: Issues with my truck
Post by: Captkaos on July 08, 2009, 06:18:25 pm

I use WinALDL on mine and I built the cable for like $10.   Works like a charm.

Title: Re: Issues with my truck
Post by: Unofficial on July 09, 2009, 12:53:13 am

What all is involved? Am I making something that triggers the engine code flashing? I've already done that... So what more is WinALDL doing than just getting the engine light code?

Title: Re: Issues with my truck
Post by: Captkaos on July 09, 2009, 01:31:34 pm

http://winaldl.joby.se/aldlcable.htm
I used 2 meter probes and wired the transistor in line and was done.  Then just Download the software to your computer.  You need a DB9 connector on your laptop (generally older ones have this only) 

This is what is displayed on the computer via the software: http://winaldl.joby.se/aldlscreen.htm

(http://winaldl.joby.se/rawdata.gif)

Title: Re: Issues with my truck
Post by: frogman68 on July 09, 2009, 01:35:53 pm

If laptop only has USB get one of these

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4143829&CatId=464