TPS sensor 1 volt questions. . rough idle
09-17-21, 08:13 PM
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TPS sensor 1 volt questions. . rough idle
1986 rx7 N/A 4 lug base
I have a really rough idle. . . Car is all stock
I have replaced all the vacuum hoses and smoked the engine and found no vacuum leaks.. . .I did the starting fluid trick and only get a rise in RPM when I spray it directly into the intake. (as expected)
Still have rough idle even though I believe there are no vacuum leaks.. . Or at least can't find one.
I set the TPS sensor to 1 volt with the adjustment screw and key-switch in acc location. Measured from back side of connector with volt meter grounded to the chassis.
When I set it to 1 volt, disconnect the TPS and and measure resistance (with the key-switch off), I get 1.8k to 2k ohms between the black and green wires on the TPS
Aren't I supposed to get 1k ohms or something close? . . And when I do set it to 1k ohms with the engine off, but warmed up, I don't get 1 volt.
Does it sound like a bad TPS?. . . I have no dead spots and no backfiring and car runs good at speed.. . .But the idle sucks *****.
I have the idle adjustment screw turned way up to keep it from stalling and it is still rough.
Anybody want to help me with a bad idle. . . This is a California car and if I don't get it to pass smog, this car will go away and 1 more rotary will not exist.
Thanks .. .
I have a really rough idle. . . Car is all stock
I have replaced all the vacuum hoses and smoked the engine and found no vacuum leaks.. . .I did the starting fluid trick and only get a rise in RPM when I spray it directly into the intake. (as expected)
Still have rough idle even though I believe there are no vacuum leaks.. . Or at least can't find one.
I set the TPS sensor to 1 volt with the adjustment screw and key-switch in acc location. Measured from back side of connector with volt meter grounded to the chassis.
When I set it to 1 volt, disconnect the TPS and and measure resistance (with the key-switch off), I get 1.8k to 2k ohms between the black and green wires on the TPS
Aren't I supposed to get 1k ohms or something close? . . And when I do set it to 1k ohms with the engine off, but warmed up, I don't get 1 volt.
Does it sound like a bad TPS?. . . I have no dead spots and no backfiring and car runs good at speed.. . .But the idle sucks *****.
I have the idle adjustment screw turned way up to keep it from stalling and it is still rough.
Anybody want to help me with a bad idle. . . This is a California car and if I don't get it to pass smog, this car will go away and 1 more rotary will not exist.
Thanks .. .
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moehler
3rd Generation Specific (1993-2002)
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07-06-09 09:30 PM