07-23-2009, 08:54 PM
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| Senior Member
Join Date: Feb 2005 Location: Rochester,NY
Posts: 384
Car: 1993 Caprice wagon Engine: tpi'd 406 w/PROMinator 730 ECM Transmission: custom 4L65 swap | Where did I go wrong?
I'm at the end of a TPI swap into a 1993 Caprice wagon.. It's actually running!
This morning there was some condensation on the windshield so I flipped the defroster on, and the fan on high. I got lots of air moving around but no heat. So electrically The fan motor is working OK, but no heat came through.
I can appreciate why I woulnd't get A/C happening as this point as the relays haven't been pinned into the ECM as of yet.
I noticed on third gen cars there is what appears to be a manually controlled valve coming off the trottle body ( passenger side) I don't have this on my car, but figured without out it ,I'd ALWAYS have the heat on, not no heat.
I thought the water flow should see a cycle from throttle body to heater core back to radiator to radiator. Maybe I was misunderstanding the path of the coolant? What did I do wrong?
What should I be checking (and how do I check it) to make sure I have water flow, correctly plumbed, etc. I assume vacuum comes into this picture somehow since there is a vacuum valve ob the controls!
Thanks for for responses, Dave. | | |
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"Shammoo" 1993 Caprice wagon, ex "Kicker" demo car. Shaved roof rack, trim and badging delete, Filled gate, rear rollpan, Front spoiler, billet grill, BFG phatties on Tomahawk rims. TBI to TPI swap. 406 ci, 58mm body AFR 195 heads, Comp cams XFI 230/236@0.050, SLP siamesed runners, 1.6 roller rockers, shorty headers, sidepipes. 730ECM with prominator, Accel double strike ignition, Remote ignition module Nordskog digital dash. B&M rachet shifter, "'4L65" Transgo kit, 5 gear planetaries. |
 
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