89 isuzu pickup 4 cyl. 5 stick w/ 102k on it (not a misprint!). won't idle but runs great. 3 dash lights just came on.

try replacing your PVC valve or EGR valve also check for vaccumm leaks

ON A 4-CYL: 1-3-4-2 DISTRIBUTOR ROTATION-COUNTERCLOCKWISE / ON A V-6: W/DISTRIBUTOR (COUNTERCLOCKWISE): 1-2-3-4-5-6. SAME GOES FOR THE DISTRIBUTORLESS IGNITION!

in all fuel injected cars you do not adjust idle. All you can do is clean the throttle and replace the Idle Air Control valve and check data thru a scanner to see if any sensors are out of specs. If this car has a maf sensor in the air filter tube it could become contaminated and cleaning or replacemnet will allow it to see more air which in turn allows the computer to add more fuel for better idling and accelration.

check for a vaccuum leak this is where i would start if it rolled into my shop. possibly a PCV valve sticking or a hole in the hose, this hose should run from the valve cover, or crank case and then to the intake, or carb.

Facing towards front of engine-number 1 is on passenger side front cyl of engine. Number 2 is front cyl on driver's side-number 3 middle cyl on passenger side-4 on middle cyl driver's side-5 on back cyl passenger side and 6 on back cyl driver's side. The distributer rotates COUNTER CLOCKWISE-number 1 cyl's sparkplug wire attaches to distributer cap connection closest to number 5 cyl.-to your right side of this plug wire on cap would go cyl number 2-then 3-then 4-then 5 and then 6. The firing order is:1,2,3,4,5,6

Go to your local shucks or auto zone and they can check any codes behind your check engine light and it's free. It sounds like one of two things a O2 sensor or your mass airflow sensor but they will tell you for sure

check the alternator

did you check for vacuum leaks probably a vacuum hose thats been knocked off or eroded and needs to be replaced.

Check all the old ' brittle plastic vacume line connections .And the idle control valve unit located near the passenger side firewall. Over the front wheel cover. passenger side.over.

The firing order for a six cylinder is 1-2-3-4-5-6 distributor rotation-clockwise...cylinders 1-3-5 on drivers side...2-4-6 on passenger side