Topic: 22re stumbling....

[85toycrawler]

so im having some issues with my motor. it runs good when i have my foot in it and it idles pretty good. but when im driving and im just cruising it stumbles and backfires and acts all dumb.... i just changed the fuel filter and put a new coil on it...  maybe timing or the maf? or even the egr stuff?  any help would be great.

[emsvitil]

Check plugs, plug wires, distributor rotor & cap

[85toycrawler [OP]]

has new plugs and wires too. i forgot to mention that.   the cap and rotor looked ok.... maybe i should just replace them anyway.

[Travis H]

hey im having the same problem with my 87 4runner with 22re. the guy i bought it from said it is the distributor and he gave me a replacement, im not sure if this is actually the problem but maybe it is.

[Total Distorsion]

Have any codes? Get a manual and Check the TPS and AFM.

[drayday55]

i just rebuilt my motor and i did not fine tune my MAF. before the rebuild it ran perfect.
now, just at slight throttle tip-in it will hesitate.  at first i noticed it in first gear. now if I'm on the highway and I'm cruising, i just bearly give it gas and it will buck a little.

i thought the exhaust leak at the collector and the o2 sensor reading . was adding to this problem (i lost a few nuts on the collector) , it kinda got better. but I'm still sure its the MAF sensor.

[toyomr285]

I had a similar situation and changed distributor cap, spark plugs, wires, fuel pump, and fuel filter.  Came to find out all I had to do was readjust the throttle positioning sensor (TPS).  Hope that helps.

[85toycrawler [OP]]

I had a similar situation and changed distributor cap, spark plugs, wires, fuel pump, and fuel filter.  Came to find out all I had to do was readjust the throttle positioning sensor (TPS).  Hope that helps.

how do i adjust the tps?

[Travis H]

how do i adjust the tps?

google search, 4crawler throttle position sensor

[toyomr285]

are you still having trouble adjusting the tps?

[85toycrawler [OP]]

are you still having trouble adjusting the tps?

i havent really got anytime to mess with it.  but yeah i read over all that stuff posted above and still have no idea...

[Plekto]

Another vote for the TPS.  Tuning it up is a complicated process and there are about a dozen things to do and check as far as getting everything right.  90% of the time when these trucks are having throttle or power issues, it's the TPS/MAF.

[85toycrawler [OP]]

yeah, im going to make some time this weekend to adjust the tps. i was wondering if i could maybe just clean the maf instead of replacing it....