Recommend a scan tool / code reader

[scholzee]

I am looking for recommendations on a scan tool/ code reader. I have an EVAP system problem with my 1996 S10 Blazer. features I want are IM readiness monitors, ablitity to read generic and specific codes, ability to read sensors outputs. Features I do not need CAN ready, programming for more HP, Also would like to spend no more than $250. All replies appreciated

[Allbert]

I just bought a CarChip from Autozone... it is basically a data logger that plugs into the ALDL. The basic model that I bought will only record vehicle speed over time unless the SES light comes on, in which case it will record the trouble code and take a snapshot of some of the sensor outputs (fuel pressure, coolant temp, etc.) at the time the code was set. There is a better model CarChip available that lets you select up to 4 out of 23 possible parameters to monitor while you drive so you can see what's happening even when there's not a trouble code set. Forgot to mention that the chip comes with software you install on your PC and plugs into the PC for downloading the data. Price was only $100, but I think I'd rather have something with more real-time monitoring capabilities.

[Turbocpe]

Do you have a laptop? In that case, you may look at the AutoTap for the OBD-II along with the "Enhanced parameters" package for GM.

The problem is many of scantools either only read the trouble code and/or show *some* of the sensor output.

I don't have an AutoTap, but that might be something you may want to look.

[scholzee]

Thanks for the suggestions, I do have a laptop and I am considering software for it I was looking at http://www.autoenginuity.com seems very powerful. I do kinda of like the self contained hand helds as they are more compact and durable for garage use or to loan to a friend. So I have some choices to make I will keep checking ones out. I wish there were only three kinds, there are just too many variations nowadays, like trying to buy a TV a guy shows you a wall of 75 of them and all of a sudden you start at $200 and he talks you up in $30 increments to the $800 one you do not need.

[Fireplug]

You can not get a fuel pressure reading using a scan tool ,fuel pump voltage yes pressure no

[Turbocpe]

I have the older Actron ScanTool style that uses different "cards" and it is a self contained hand held. I have the OBD-II card that plugs into the unit and then I can read OBD-II codes, as well as some of the sensor output. However, as I mentioned, it does not display ALL of the sensor outputs, which is the weak point. It does display key info like:

RPM
Short term fuel trim
Long term fuel trim
Oxygen sensor (both banks) voltage and %
ECT tempeature
ACT temperature
And several other ones that I cannot recall off the top of my head, like duty cycles for EGR, etc.

It also does inform if all of the readiness monitors have been completed, and if not, it displays which ones have not been completed at that time.

[scholzee]

Many Newer Fords 99 - present use a fuel pump that is variable speed, There is no fuel return line to the tank like most conventional systems that send ecxcess fuel back to the tank and use a vacuum controlled fuel pressure regulator. A pressure sensor measure fuel pressure and changes pump speed to regulate fuel pressure. The scan tool can read that fuel pressure sensor and display the fuel pressure.