Hi All,
I've got an 09 FE570 which is running like crap past ~60% throttle, backfiring and surging. Seems like it's running lean which I've chased it down to the TPS which I've replaced. Both before and after the values max out at 3.3-4.0v which is obviously too low as it should be 4.8. I'm reasonably sure that's what's causing it to run like crap. Idle is relatively fine, low value reads below .601v but it seems to start and run ok.
Obviously the TPS wasn't the problem but the voltage at the ECU with a needle in pin 5 and measured to ground is still too low, afaik it's one wire directly from the ECU to the TPS plug so I doubt it's a contact issue. What else could it be? Where do I go from here in diagnosing this or does it just need to go to a Husa/Husky shop near me?
EDIT: Also I've got a good 5v at the plug.
I've got an 09 FE570 which is running like crap past ~60% throttle, backfiring and surging. Seems like it's running lean which I've chased it down to the TPS which I've replaced. Both before and after the values max out at 3.3-4.0v which is obviously too low as it should be 4.8. I'm reasonably sure that's what's causing it to run like crap. Idle is relatively fine, low value reads below .601v but it seems to start and run ok.
Obviously the TPS wasn't the problem but the voltage at the ECU with a needle in pin 5 and measured to ground is still too low, afaik it's one wire directly from the ECU to the TPS plug so I doubt it's a contact issue. What else could it be? Where do I go from here in diagnosing this or does it just need to go to a Husa/Husky shop near me?
EDIT: Also I've got a good 5v at the plug.
