For some reason, the stang is backfiring. It only does it when u give it gas. I have an 88 EFI. N E One know whats wrong? Also, the pedal is a little stiff. (GAS) How do i make it so it will be loose. Stiff, as in kind of hard to push down on the pedal. THANKS
how is your accelerator cable? if it is on its last leg, it can get hard. improper motor grounding can lead to cables being recruited as grounding devices (not great, but better than nothing).
Dump the codes and see what the computer says is wrong…
Here's the link to dump the computer codes with only a jumper wire or paper clip and the check engine light, or test light or voltmeter. I’ve used it for years, and it works great.
IF your car is an 88 stang, you'll have to use the test lamp or voltmeter method. There is no functional check engine light on the 88's except possibly the Cali Mass Air cars.
Codes have different answers if the engine is running from the answers that it has when the engine isn't running. It helps a lot to know if you had the engine running when you ran the test.
Trouble codes are either 2 digit or 3 digit, there are no cars that use both 2 digit codes and 3 digit codes.
For those who are intimidated by all the wires & connections, see http://www.actron.com/product_detail.php?pid=16153 for what a typical hand scanner looks like. Normal retail price is about $30 or so at AutoZone or Walmart .