WHAT COULD BE CAUSING AN ANALYZER TO READ A DROPPING VOLTAGE FROMTHE THROTTLE POSITION SENSOR AS THE RPM INCREASES?
1994 Oldsmobile Bravada • 146,000 miles
I have replaced the TPS three times and the PCM yet the analyzer still continues to say the TPS is bad and shows the voltage dropping as I increase the RPM. It doesn't shift until above 2500 RPM and then shifts very hard. It also is running 200 RPM faster than normal at highway speeds even though it is in OD.
July 16, 2012.
July 16, 2012.
Will need a DVOM see diagrams back probe TPS connector Black lead on bottom sensor ground and middle one RED probe. Key on at idle voltage less than 1 volt(.5 v best). then operate throttle from idle to full meter should go up steady to 4.5 V
Makes no sence if have 5v REF all TPS is a variable resistor so you say at idle .27v and as open throttl goes to zero
My point exactly. Could this be an issue with one of the tranny sensors?
Unplug tps use jumper wire from 5v ref and then jumper ground on bottom wire hook up meter across ground and TPS signal open throttle what does it do?
I have a Honda and yesterday when I went to work the rpm's dropped to zero and then ramped up normal jolting the car. This happened three times on the way to work. On the way home ...
1 answer • 1996 Honda Accord • 180,000 miles
When driving I notice the RPM speed is loud and the needle is higher than usual. And the gas usage is higher too
1 answer • 2005 Saturn L300 • 102,500 miles
Hey All, Had a very rough running Mazda 626 on LPG, engine code FP. After renewing the spark-plug cables, some vacuum hoses and cleaning the throttle valve, I installed the lot again...
5 answers • 1996 Mazda 626 • 473,000 miles
My rpm is already at 1 when i start the car and when i press the gas pedal it shoots forward suddenly. the car will move by itself when i'm not pressing the gas pedal. what is wrong ...
1 answer • 2001 Honda Civic • 135,000 miles