Wiring differences, OBD I-II?
Thread Starter
Joined: May 2006
Posts: 3,974
Likes: 2
From: Spring Hill, FL
Wiring differences, OBD I-II? OK so we are putting this 96 Impala motor into my friends 94 Formula. Do I have to worry about the sensor in the timing chain(crank position or something?) or is this thing going to just run fine on the OBD-I computer and harness? I didn't think about this.
You are going to want to pull the timing cover, and remove the CPS reluctor wheels so you can use the f-body hub. Leave the sensor there to plug the cover. I would use the 96 cover as it will let him upgrade to the vented opti.
Going to want to use the 94 knock sensor as they are different.
The Impala motor will have the dash temp gauge sender in the passenger side head towards the back, swap it to the driver's side since that is where the f-body has it. Actually on my Caprice I moved that sender to the driver's side because it makes dealing with the passenger side header SO much easier.
Going to want to use the 94 knock sensor as they are different.
The Impala motor will have the dash temp gauge sender in the passenger side head towards the back, swap it to the driver's side since that is where the f-body has it. Actually on my Caprice I moved that sender to the driver's side because it makes dealing with the passenger side header SO much easier.
Thread Starter
Joined: May 2006
Posts: 3,974
Likes: 2
From: Spring Hill, FL
Thanks, yeah I see he had the coolant sensor in the passenger head, its broke off though. I will pull it, I see the plug in the driver side where its normally on the Fbodies, so no biggie there.
Can you explain to me the differences in the hubs? Oh yeah there is no way I'm changing Opti's if I don't have to, this motor was running good and right, I don't want to take anything apart I don't have to. So was planning on using this cover and Opti that is on there already. Do I have to pull the CPS reluctor wheels?
There was a knock sensor in both sides of the Impala motor? I took the one out of the driver side as it was in the way of the Fbody motor mount. The way it connects looks the same though, did they have different resistances than the Fbody knock sensor then?
Can you explain to me the differences in the hubs? Oh yeah there is no way I'm changing Opti's if I don't have to, this motor was running good and right, I don't want to take anything apart I don't have to. So was planning on using this cover and Opti that is on there already. Do I have to pull the CPS reluctor wheels?
There was a knock sensor in both sides of the Impala motor? I took the one out of the driver side as it was in the way of the Fbody motor mount. The way it connects looks the same though, did they have different resistances than the Fbody knock sensor then?
TECH Veteran
Joined: Dec 2008
Posts: 4,145
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From: Little Rock, AR
You will need your old knock sensor. 96capricemgr already mentioned this. OBD-II KSs are a different resistance value.
Caprice accessories use different length hub. Spacing is not the same as the f-body. You will either need to remove the reluctor and use a 93-95 f-body hub or leave the reluctor in and use a 96-97 f-body hub.
Caprice accessories use different length hub. Spacing is not the same as the f-body. You will either need to remove the reluctor and use a 93-95 f-body hub or leave the reluctor in and use a 96-97 f-body hub.
The f-body and b-body have different accessory drive depths, that is the serpentine belt is a different distance from the block. The hub determines the balancer distance from the block and the hub seats against the crank timing gear or the cps reluctor which seats against the timing gear. If you want to leave the CPS reluctor in there I suppose you could get a 96-7 hub that is slightly shorter to make room for that reluctor. Otherwise you need to pull the reluctor in order for your current hub to sit at the right depth.
Hope that made sense.
Hope that made sense.
Thread Starter
Joined: May 2006
Posts: 3,974
Likes: 2
From: Spring Hill, FL
Makes perfect sense. Going to get the 96-97 hub, I have zero desire to pull the Opti or waterpump.
Wish I had the old knock sensor. The motor was knocking, hence the reason for its replacement, and the knock sensor went with the old motor to its new owner. Ah well they don't cost too much, could have been worse.
Wish I had the old knock sensor. The motor was knocking, hence the reason for its replacement, and the knock sensor went with the old motor to its new owner. Ah well they don't cost too much, could have been worse.
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Well we went to start the car yesterday, I gotta put the battery on a charger or something though, not enough juice to crank the car. The problem though is when the key is turned the windshield wipers are continually on, even though the switch for them is in the off position. Any ideas?
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It was quite interesting when I tried cranking it with Corey watching. Then he see's the wipers on and I say "****, where is the wiper thing!" He comes over to the side of the car and says "Well it's off....WTF?!" It was a good laugh. Hopefully we can get it sorted out.