Not sure which or where the screw that adjusts the air fuel mixture on my 1987 dodge dakota's TBI (throttle body injection) or is the only way i can change it is by re-jetting the throttle body?
There is a set screw in the front of the throttle body, to adjust it, but first why do you need to adjust it ? if low idle then it could be your TPS or IDLE AIR CONTROL VALVE, this valve is on the back of the TB and should be cleaned first, take the two.screws out which are torx heads and I think.a 25, once you have it out, take TB cleaner and a non lint towel and spray and clean, also clean the port where it sits in to, on these Dodges they are known for these to be carboned up, this would give low or high idle, also check to see if you have your 5volt reference on this sense, the TPS and crank sense, this one is hard to get to, it sits on top of your transmission bell housing on pass side. before you go touching the.idle set screw, check these and clean.idle air control valve first
It's not that I need to adjust it It's that I want to plus when I floor the peddle sometime it bogs like its getting too much fuel and then recovers so I want to lean the mixture out a smig for added horse power and to eliminate the bog but I'll try cleaning the jets first
that is the way they made it, there is a rev limiter on it, almost all cars and trucks have it, you are not going to gain hp by turning it, there's other ways to do this, you can get bigger jets, add a spacer on your TB , the reason why it bogs when you try.to.floor it,.it's more of.a.safety feature, so you.don't blow your.engine, like when you press.the gas pedal all the.way to the.floor when.trying to.start it cuts.the.fuel off, get a K&N cold.air intake system will boost HP to, once you start messing with.the.set screw you will throw off your fuel trim , it's better not to.touch it and buy some. performance parts that will do the job.right
The only limiters should be mechanical though so I wouldnt be removing anything digital, It's an 87 plus I was hoping I'd be able to get away with having to buy parts
no, its electronic, better off getting a ignition kit tuner, crane has a good one for a good price, you know that the rev limiter only works in park and neutral, not in gear, so don't know why you want to raise the rpm ? your not.going to.gain.any hp or torque by messing with it, since.it's a 87, you really don't have much in computers, so switching to a carb would help out, the rev limiter is there really so you don't blow your engine, again.there are other things.that can be done that don't cost much to get better hp.and torque out of it.
ah ok I've heard that the tb's on the v8's will bolt right in. do you know if just the jet's can be swapped or not?
they should be able to just replace them, I never really had to, but I know a couple of guys that did change them, but really didn't ask if it was stock or not
alright thanks
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SOURCE: idle adjustment for a 1995 2.5 liter fuel injected
Idle is controlled by an idle air control valve and the throttle position sensor-that setting you are referring to is set at the factory, the ECM will override any changes you make. You should clean thoroughly the throttle body and the PCV valve ,check for any vacuum leaks, and possibly remove the Idle air control and clean it, being careful NOT to get the top half wet with cleaner (electronics).
First, you shouldn't adjust the idle. If the idle isn't correct, that means there is an issue somewhere - not that the idle needs to be adjusted.
There isn't an adjustment screw. To adjust the idle, you will need to move the TPS (Throttle Position Sensor) forwards or backward. To do this, you will need to remove the tamper proof bolt and replace it with one that can be loosened and tightened.
SOURCE: I don't know where the air/fuel mixture screw is on my carb
There should be one screw (I'm assuming it's the Carter YF carburetor 1 barrel) that's by itself away from linkages etc, more to center at base of carb where it meets manifold, that is angled approx 45 degrees going in to base. That should be your mixture screw. What symptoms are you experiencing anyway?
SOURCE: 88 dodge dakota 4x4 3.9
i have a dodge dakota 88 pick up 4x4 and its is automatic and whin i put it in drive the 1st gear the rpm go sky high but the truck berley moves untill it rech 2nd so wut could it be replie at [email protected] or call at 704 772 6205 thanks
SOURCE: 95 nissan sentra 1.6L, air
1.5 turns for most carbs, but you can use a vacuum gage on the intake to get it right. Make sure engine is warm and on the regular idle screw, then turn the mixture screw in and then turn out until vacuum stops rising. OK?
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