1996 Ford Ranger Q&A
1996 Ford Ranger Question: After driving in traffic on a hot day it runs rough and PO302 code comes up.
Runs fine, let it sit for 20min then start & it runs rough & PO302 pops up. Turn it off let cool down for awhile & then its fine. Replaced coil, plugs & wires and fuel filter. No overheating, temp gauge is good. Could it a intake manifold gasket leak or bad fuel injector? Only happens after driving in traffic on hot day, runs fine, shut it off for 20min then start up & rough idle & PO302 code. - Ranger Smith
Try some injector cleaner with Chevron Techron. If that dont help after driving awhile, a week or so, have the injectors professionally cleaned. Possible vacuum leak but not as likely as an injector problem. Since you have installed premium ignition parts, i'm sure (?) - pushrod
TRY SAEFORM INTAKE CLEANER YOU CAN BUY IT AT ANY PARTS STORE - globalhelper