Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Hi Im David, thanks for visiting the site. please allow me to look some information up on your vehicle. thanks
It appears to me to be an issue with the throttle position sensor or the accelerator pedal position sensor. to test the throttle position sensor, connect an volt meter to the sensors connector and manually operation the throttle plate. closed voltage should read around .4-.5 vdc and smoothly increase to 4.5-5.0vdc as you manually open the throttle plate.
you can leave the key off for now
the one on the right
not the wire. how many pins are on the sensor?
i wanted you to disconnect the sensor to see if it was corroded inside. sorry i should have explained that. with the connector installed you need to back probe with the meter
standby please. let me get you a print
heres a video. a lot easier than explaining.
the 2 end wires
make sure you have the probes in far enough
no. thats the input from the ecm
you might get it with the key on
ok then my bad. the key should have been on. sorry bout that
so the tps is good.
it was the resistance check that the key was to be off
but thats not necessary since the voltage is good
do a wiggle test with the meter still hooked up.
see if vibration affects the reading
the wiring harness that the sensors connector is in.
sure could be. another way to check would be to start the vehicle and shake the harness. see if it affects the rpms
do you have a scan tool?
ok. wiring is probably ok
yes obd. does it read live data?
and the check engine light is not on correct?
ok. and i will pull a a test for the accelerator pedal position sensor if i can find one in my books
ok the best way to test the accelerator pedal position sensor is to start the vehicle. let it get to operating temp. then slowly and steadily accelerate at from idle to 3000 rpms. the rpms should go up smoothly with out any dead spots or rapid rpm changes
replace the pedal position sensor.
it is attaches to the gas pedal assembly on top of it
i believe its all one piece
you can accept the answer, leave a 5 star rating and i will keep this open until we get her fixed.
ok, yea i saw that one too. let me pull something up
yea, the pic i sent is the only thing i can find
can you take a pic of the pedal assembly area
according to my manual you do...sorry the pic is so small
there you go. good find
im confident that with that erratic behavior, especially while you were testing it, that will take care of your issue.
i have to do some more research
sorry, had to run out for a few, let me get the coffee started......
im going to call the local volvo dealer
last 8 of you vin?
the last 8
let me have the whole thing...sorry
you dont have one on the vehicle.
it only work by the throttle cable which connects to the throttle linkage on the side of the throttle body. so i have to suspect the tps is bad/intermittent
unmetered air entering the engine after the maf sensor
you can have a vacuum leak anywhere. intake manifold base, ant vacuum hose, brake booster, etc....
get a can of throttle body cleaner and spray all around the engine at any all all sources of vavcuum. if the rpms rev. you have found a leak. but im putting my money on tps
ok my friend. keep me posted
what codes you have?
what? ok. can you monitor live data?
ok. let me go back over our notes..ill get back with ya
nice find and will definitely cause a vac leak
if you want to be sure its not going to leak i suggest the dealer parts
how far away is it? drive on down there. walk into the parts department and tell the knucklehead what part you need. dont but jy...especially that
so what are you gonna do?
HOPE ITS A GOOD ONE
dude that tps has got to be bad!!!!!!! that or the damn cables ae sticking or the bracket for the throttle cable is on wrong
hows it going?
unless the cable being shorted causing all the sensors to go nuts..............
unless they purposely damage it.