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Top 4G63 Technical 4G63 Tech topic #5349
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Subject: "1g turbo starting troubles" Previous topic | Next topic
justins71May-13-08 04:03 PM
Member since Oct 25th 2007
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#5349, "1g turbo starting troubles"


          

So I'm helpin a friend get his car running, which hasn't happened apperently in the last 4 months. I'm a 2gnt w/turbo guy, so the 4g's are a little new to me, wiring and everything. Issue was it'd crank, but no start. I've got no spark, no fuel. Okay, did some searching, came up with the MFI relay. Hunted the bastard down behind the radio and did some probing, found out there's no ground signal comming from the ECM to switch the relay for all the power to the sensors (Crank/cam, MAF, etc). The fuel pump half seemed okay. I tried jumping the relay, and now I have spark, but no start still. I can't seem to find a pressure port to check fuel pressure, as I can't tell if the fuel pump is engaging or not. Possible the fuel pump AND the ECM is bad? Are there any other parameters that tells the ECM to ground out that relay other that just turning the key on? Any help would be appreciated, I'd just Megasquirt the damn thing if it was mine!

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'95 GS w/ t3/t4b
FMIC, diy piping & RFL BOV
MS2-Extra Fuel&Spark
50 lb/hr Holley injectors w/ 1:1 RRFPR
JE 8.8:1 dish w/ Hastings Rings
Eagle Rods w/ ARP bolts
ARP Head studs
Mild port/polish head
3" custom DP/cat section, 3" PIT catback
dual MBC - 12 psi / 20psi

  

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1g turbo starting troubles [View all] , justins71, May-13-08 04:03 PM
  RE: 1g turbo starting troubles, TeamDR1665, May-14-08 08:24 AM, #1
RE: 1g turbo starting troubles, justins71, May-14-08 02:37 PM, #2
RE: 1g turbo starting troubles, justins71, May-14-08 02:39 PM, #3
      RE: 1g turbo starting troubles, RoninEclipse2G, May-15-08 05:59 AM, #4
           RE: 1g turbo starting troubles, justins71, May-15-08 11:49 AM, #5
                RE: 1g turbo starting troubles, RoninEclipse2G, May-15-08 12:16 PM, #6
                     RE: 1g turbo starting troubles, justins71, May-15-08 12:47 PM, #7
                          RE: 1g turbo starting troubles, TeamDR1665, May-15-08 01:52 PM, #8
                               RE: 1g turbo starting troubles, justins71, May-15-08 03:40 PM, #9
                                    RE: 1g turbo starting troubles, justins71, May-16-08 12:10 PM, #10
                                         RE: 1g turbo starting troubles, ModeratoreclipzGST, May-20-08 08:27 AM, #11
                                              RE: 1g turbo starting troubles, justins71, May-22-08 02:22 PM, #12
                                                   RE: 1g turbo starting troubles, ModeratoreclipzGST, May-23-08 08:52 AM, #13
                                                        RE: 1g turbo starting troubles, goalie40, May-23-08 10:10 AM, #14
                                                             RE: 1g turbo starting troubles, justins71, Jun-12-08 01:56 PM, #15

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