TPS issue with Hydra? AC compressor cutting off
#1
TPS issue with Hydra? AC compressor cutting off
I've got a new to me '90 Miata with a FMII Hydra setup. As far as I know, the AC hasn't worked in a long time. I got it recharged and converted to R134A and it cools great at idle. But, with any throttle input at all, the compressor quits and there's no cooling. Driving down the road, I get no cooling--only coasting down hills and at stop lights.
From what I read, 90-93 TPS's are basically an on/off switch, which I also see in the Hydra software (0 or 100% throttle only).
From what I know about other (newer) cars, the ECU typically cuts the AC during wide open throttle. How does it work with the 90-93 Miata's setup with the Hydra?
I don't see anything in the Hydra software about AC control.
Does the Hydra use the TPS or only the MAP sensor?
Any ideas what I should try?
From what I read, 90-93 TPS's are basically an on/off switch, which I also see in the Hydra software (0 or 100% throttle only).
From what I know about other (newer) cars, the ECU typically cuts the AC during wide open throttle. How does it work with the 90-93 Miata's setup with the Hydra?
I don't see anything in the Hydra software about AC control.
Does the Hydra use the TPS or only the MAP sensor?
Any ideas what I should try?
#5
well, I changed it to 100%, downloaded to ECU, and tried it. No change. I uploaded from ECU to verify its set at 100%, and it is. Any suggestions on what to try next?
I attached my .s20 file.
Note: this forum wouldn't accept a .s20 file, so I changed the extension to .zip. It is not zipped. Please change it back to .s20 before trying to use.
I attached my .s20 file.
Note: this forum wouldn't accept a .s20 file, so I changed the extension to .zip. It is not zipped. Please change it back to .s20 before trying to use.
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