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About s2mikey

  • Birthday 23/02/1971

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  • Name
  • Car
    1987 Turbo Esprit HCi
  • Modifications
    Green Dot cams, Fikse 17" wheels
  • Location
    Upstate, New York

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  1. s2mikey


  2. hi

    have you the technical manual of your hci esprit?

  3. Ahhh - the module side is male. The female side is where Id do this then. So, top bridge the primary pump, I simply "connect" pins 1 and 5 together on the connector? Pardon my ignorance on this issue - Im quite electrically challenged.
  4. I agree about replacing parts getting costly but this particular unit has to be in question due to what tests have been done already. It does more than just over speed detection too on my '87. I will try your described test tonight and see what happens. When you say bridge, what exactly do you mean? Take the female connector(the one that runs back into the relay box of the car) and then run a jumper wire from the WG slot to the pink/purple slot on the same connector(female side).
  5. I am going to order a new OSM today. We have done enough tests to make it worthwhile to replace this unit. It is paramount to getting those pumps turned on and if its busted and "senses" an issue it wont power the pumps up at all no matter what else we do. Thats where Im at
  6. We have done much of this already but I will retest to confirm. The fact that we get +12v at the fuel pump fuses pretty much gaurantees we got +12 from the relays and over speed module since they are "upstream" from the fuses, I believe. Let me ask you this - I did find out that the Overspeed module kills the ground to the pumps if it detects a failure conditon. So, if it was a bad unit, then is it possible that what happens is as I crank the car this module is killing the ground to the pumps due to the module being defective? Just wasnt sure if that made sense or not. I assumed that since the relays and fuses are getting their +12z that the over speed module had done its job and was out of the loop. However, maybe Im wrong?
  7. Ahhh - I explained it wrong then. When we ran the wires directly to the pumps from the fuse sockets the pumps did NOT run. The only way they run is to be wired directly(both ground and power) to a 12v source, like the battery. If they are in any way connected to the cars circuitry, no go deal. That how we figured the pumps themselves are good. I also know that the grounding is good, we verified that too. But, the overspeed module does kill ground if it senses an issue so if its bad then it could be causing them not to run. See why Im going cookoo here? Thanks for your help though - the CBHC info helps either way.
  8. You're gonna kill me...but didnt our wiring test bypass those connectors since we went straight from the fuel pump fuse sockets to the pumps?? If so, then it has to be something else, right? If not, Im an idiot and apologize
  9. Whoa - so the overspeed cant be it either then? Geesh.... we are running out of things to check! See why Im stumped here? The only items left between the pumps and the fuses are the CBHC and the PHC and we bypassed them. Now what do I do?
  10. That makes sense.... but, we did do a test the other night and ran wires directly from the fuse sockets to the pumps, didnt we bypass that CBHC connector by doing so? And, if thats the case, does the Overspeed module still end up in the chain? If it does, then I need to get a new one of those to at least eliminate it.
  11. Ok - thanks. Honestly, I dont think any of that is it. Here is where we are at: We are getting 12v at the fuse sockets and ran wires directly from those to the power leads on each fuel pump. Wont start. nd, we arent getting 12v at the pumps. There really isnt anything between the fuses and pumps though..... this is crazy. I dont even know what to do at this point.
  12. Great, thanks. Where in the manual are these connectors shown? Where are they located on the car?
  13. Great - I wonder if they are talking about the connector that plugs into the over speed module? There are two others in that area that could be it though. They are not labeled and m,y service manual doesnt help or depict a photo of them. Hmmm... Ill have to check this out further. Hopefully I find something and can post back saving some other owners of HCi cars a headache!
  14. Thanks for the replies. Yes, its the coil box harness connector all right. I may have found it - under the carpeted shelf over the RH side fuel tank by the cahrcoal cannister. There are a few conectors there though. Ill have to investigate. And, yes, I may have a ground problem since neither pump gets any power at key on or during cranking. It would be very odd for both to have a bad connection..... but they do share a ground, I believe. Ill check that too.
  15. My '80 thru '87 service manual on page 65 section LD shows that the fuel pumps are connected at some point to whats called a CBHC connector. The problem is that I cant find it! Its not in m yparts manual and they dont show you were it is. This is one of the last things I need to test to determine why my fuel pumps will NOT run unless powered by a seperate power supply. Weve verified voltage throughout most of the system. The fuel pump relays, the rpm relay, the inertia switch, fuel pump fuses, and even that pesky overspeed module appear to be sending the correct 12 volts while cranking so its not likely any of those items. I even replaced the RPM relay with a new one just to try it. Car throws a massive spark so its not that. We have also verified that the connector sockets for these items are not damaged in any way and show correct voltage. This problem started after replacing the battery & tightening the alternator belt which did involve removing the airbox. Weve checked all of the obvious "maybe you knocked this loose or that loose". Its beyond that, Im afraid. Like I said, she starts and runs like a beast..... with the fuel pumps wired directly to the battery Otherwise, it just cranks but power is not reaching the fuel pumps. This is really a tough one to sort out! Thanks for any help on that CBHC connector and its location - I need to find that sucker!
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