Question about Toyota Tacoma
My truck jerks mostly up hills
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Posted on Jan 02, 2017
SOURCE: no power up hills
If you had a bad mass air sensor, it should register a fault code. Ditto for oxygen sensors. I'd change the fuel filter for sure, as well as spark plugs (make sure they're gapped correctly), and run a bottle of Seafoam through the gas tank. If that doesn't do it, change your cap, rotor, and spark wires (all told you're under $100 for everything).
Posted on Jul 21, 2008
SOURCE: engine jerking
Hi there, let me see if I can help.
There's not much info to go on here, but let me try.....
Ok, if it's "pulling or stopping" in a jerking motion. It sounds like it might be engine related, however, it can be transmission issues also. Lets talk about engine.
Are there any check engine lights? That may be a clue that it's engine related...such as an engine miss.
Try putting the car in park and rev the engine from idle. (note: don't go into the red zone on RPM.) Does if feel rough and jerky? this eliminates the transmission. If so look at cyl miss issues, timing belt "out of time," EGR stuck open....etc...
If the engine passess this test, test drive the vehicle for transmission problems. Find an open road that does not have much traffic. Test at 20, 30, 40, 50, and 60 mph. go to a cruise at speed indicated and then accelerate at light throttle and then heavy throttle then coast.
Do you feel it only when applying power? Nothing on deceleration?
if it does it on most of these speeds (particulary at higher speeds) look at inner C/V joint. You will need to take apart the joint and look at the race for ridges. The vibration can happen when the rollers fall into the worn spots and causes a "jerking" feeling when applying power. (look for leaking grease from inner joints. Damage usually happens when all the grease leaks out.
If it only happens at and around 40mph, it could be a torque converter clutch. Try a transmission flush.
(drain, refill, and run through all the gears P,R,N,D,2,1 BE CAREFUL HERE!!! Keep your foot on the brake. USE YOUR HEAD!!!!!!!!! Don't run vehicle on jack stands. Repeat 3 times. ONLY USE HONDA TRANS FLUID. Yes, it does make a difference! Will take about 12 qts to do a proper flush. See if the problem goes away.
It might need a transmission it it continues after the flush, or you have some other problem that isn't obvious to me with the given info. Hope this helps and happy hunting.
Posted on Jan 03, 2009
SOURCE: loss of power going up hill
fuel pump is bad. they are under extented warranty from ford. take to dealer and "insist" they change it. there is service bulletin on this, but dealers often play "dumb".
Posted on Mar 06, 2009
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