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91 Trooper MUA5 transmission. My gas pedal has more resistance than the clutch pedal and the engagement point is almost non existent. I did change the slave cylinder and have spent plenty of time bleeding the system but nothing seems to help. Any ideas on what might be causing these issues.
 

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2003 Isuzu Rodeo 2wd 2.2l 5spd, 2002 Isuzu Rodeo Sport 4wd 3.2l Auto
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I have installed an MUA5 on a 2nd gen rodeo, and it has a small round inspection plate on the bottom of the bell-housing. Yours may be different, but for what its worth... Remove screws and look in there with flashlight while someone up top presses clutch (engine off, ebrake on, I'm not very trusting). See if the fork is engaged with the release bearing (two ears on the 2nd gen rodeo, '91 may look different), and the bearing is pulling the pressure plate as it is supposed to. If the hydraulics of the slave cylinder are working right, it should be rocking that fork and pulling the pressure plate via that release bearing. Sounds as if you can't feel the pressure plate spring force. If its disconnected in there, the transmission needs to come off to fix. While you are looking, check to see that slave cylinder plunger is engaging the fork too. There may be a way that can get misaligned.
 

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The 2nd gen Rodeo uses a slightly different MUA5 than the 1st gen Trooper, but EGOZU makes a great point. Pull off the service covers and have someone push the clutch while you observe engagement of the slave, throwout bearing, and pressure plate.
 

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If you "opened" any of the clutch hydraulics, it needs to be bled. Most "normal" bleeding procedures do not work. I put a half a quart of fluid through my first one and it STILL didn't have a good pedal (before I learned how). here's what worked for me: I used a turkey basting injector and injected brake fluid UP through the bleeder valve on my slave cylinder. This forced the air (which gets trapped in the steel line) up and into the reservoir. Do this and you will start to get a better pedal. Once you have the better pedal, you can bleed it all the way with the conventional method. Dennis
 
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