Hello guys
So I have a 1988 Toyota pickup 4wd manual transmission with the 22re engine, I use it some times to go from North Carolina to Atlanta a 6 hours trip, everything was working fine but las night I was coming back to North Carolina and I started feeling the truck jerking when reaching 70 and over miles per hour, just for a second it feels like I was hitting a invisible pot hole, if going up a hill at 65 to 70 mph and acelerate to maintain speed truck jerks sometimes or I feel like a little wobble or shaking.
I stopped midway to fill gas tank and truck seems to be idling just fine.
I haven't done any tests since happened last night and I would like to know what should I test first.
I changed sparks plugs, wires, distributor cap and rotor, fuel filter, air filter about 7000 mile ago when I bought it.
Also have done oil change.
Could it be fuel pump failing?
Ignition coil maybe?
Thanks in advance for any info.

 

Check fuel pump pressures, you'll need a a specific fuel pump gauge setup that uses banjo fittings. I replaced the original fuel pump when it died with a Back/Arnley and 10,000 miles later had the same problem you did. Fuel pressure would slowly drop below 10 PSI and causes bucking issues. Replaced the fuel pump again with a Denso and it has been fine for almost 20 years.

 

Almost certainly the fuel filter. Spend the money on genuine Toyota. If you want to do it yourself, look up the many Utube videos on the job. Have fun. Small hands are better. Experienced Yota mechs won't be smiling if they get the job. Too tough for me. Mine ('89 pickup 22RE 5spds fwd) started the intermittent severe misfire, especially while accelerating. Mine was needing smog/register and I turned it over to the smog checkers/smog repair guys that I use: Smog-X here in Lovely Fresno.

 

Thanks I ordered an lce kit for checking fuel pressure but still waiting on it.

 

Filter it's new I got it from 22re performance store.
I did it myself and you are 100% right about small hands there😂😂