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New Middletown, OH
i hooked my autel up to read pid data on my friends new truck and post cat o2s are reading 2.125 volts.pre cat o2s are switching + and - .5 volts as normal st fuel trim at zero as it should.engine is strong at any rpm,all data looks good.im shocked at the post cat o2s reading a solid 2.125 volts,thoughts?
tell them no thanks on the $160 flush.used motor oil has better lubricating ability then the solvent which is what that engine flush consists of.just have the oil changed n all will be ok.
theres also a maxi n mini fuse under the battery tray for that secondary air.
put 12 volt power n ground to the 85-86 posts,either way is fine.you should hear it click.in the meantime have a multimeter hooked to the 30-87 posts.you should have continuity n feel the relay click at the same time.if both happens then thats a good relay.
i agree with wetry totally.did that to my blazer one summer and now that is how my f-150 currently is.
start the engine then pull the fuel pump relay.that will relieve the pressure.
silverados,colorados,camaros,luminas anything chevy cause ford sucks/allways has allways will.
1.Press and release SETUP to display “OIL LIFE XXX% HOLD RESET = NEW”. Picture below. 2.. 3.Press and hold RESET for two seconds and release. Oil life is set to 100% and “OIL LIFE SET TO 100%” is displayed. Picture below. 4.. 5.Note: To change oil life 100% miles value from 7,500 miles (12,000 km) or 12 months to another value, proceed to Step 4. 6.Once “OIL LIFE SET TO XXX%” is displayed, release and press RESET to change the Oil Life Start Value. Each release and press will reduce the value by 10%. 7.Note: Oil life start value of 100% equals 7,500 miles (12,000 km) or 12 months. For example, setting oil life start value to 60% sets the oil life start value to 4,500 miles (7,200 km) and 219 days.
the manufacturer has no recommended specific maintenance interval on 1994 and later models for your engine but 100,000 miles since last change is near the end for all timing belts in my experience.you may just need the egr passages cleaned or valve lash adjusted.tuff to diagnose online however but good luck.
like you stated.bent valve(s) possible hole in piston head but only if its a dohc engine.if its a sohc engine you'll be ok as the sohc is freewheeling.the dohc is interference.