On a 88 2.5 ltr, where is the main computer located? I have searched and found no luck.........

 

Look under the dashboard, near where your right knee would be. You should see a flarge flattish silver (made from aluminum) box with a big plug and a mess of wiring going into it - that's what you're looking for.

Why for do you want to know? Having problems?

 

Yah man BIG PROBLEMS!!!!! no one can help at all....Somedays it runs perfect others it wont start, stalls, hesitates, bucks and just runs like crap. Park it for a day runs fine again, park it and go to the store, come outside does it all over again. NO CODES either!!!??? I have filled up 3 times as well and it still does it, on 87 and 93 octane

Replaced:
Cap, rotor, plugs, wires, fuel filter, strainer, pick up line for pump, battery terminals, engine ground

Cleaned:
Crank sensor, TB, injector

Checked:
vacum leaks, grounds, coroded wires

any ideas?

PLEASE HELP ME!!!!!

 

It sounds like either the crank sensor or the coil.

Do you have a test-light and a helper to spin the engine?

Wait for it to not-start. Pull the coil wire from the dist cap and see if you have spark.

If you don't have spark, hook the test light to ground and check for power at the (+) side of the coil. If you have power, next we check trigger.

Hook the test light to the positive post and check for ground-trigger at the (-) side of the coil.

If you have power and trigger, but no spark... replace the coil.

 

thats what i thought it was as well......but when it dies its only for a split second and it starts back up again, it only dies when its under load, vary rarely will it die at idle

 

Take a hair dryer out. Start with the hood open, and heat suspect components with the hair dryer on high.

Intermittent electronic failures are often heat-related, and the ability to spot-heat various components helps to isolate them. Spot-heating is easier than spot-cooling, since most people can't get access to "freeze spray" unless they have an electronics tech vendor handy.