- Jun 16, 2017
- 13
- 2
- 13
Hello All,
New guy here, but have been messing around with Fords for a while. This is my first true venture in the EFI realm. Anyways I have done tons of reading and worked on most issues people recommend on this site. I have done a 5.0 swap...engine came from a 91 T-bird, but using the SN95 EEC and a new T5Z transmission. What is happening is on a cold start up, it takes 2 to 3 tries for the car to stay running (it fires up immediately each time). Once it actually wants to stay started, the rpms will rise and then sharply fall to about 500 and then pick back up again to about 1,000.....then it settles down to 750. Also at random I will come to a stop and the car will die (yes the VSS is connected). Now let me list all the new parts I have installed....TFI, 2 distributors (One Cardone and the latest is a Richporter), Motorcraft TPS and IAC, ECT and ACT sensors (checked voltages and ohms), fuel pump, FPR, 65mm Throttle Body, MAF, rebuilt injectors, plugs, wires, etc. Before I was chasing down 2 codes for the TPS and the ECT. TPS I was using a Standard Products one and switched to a Motorcraft (fixed code) adjusted to about .85v, then put new harness on ECT as it was corroded and the ECT code went away. So now I no longer have any codes other than the fan ones and EVAP Canister(which are not connected), getting 11 code for the KOER and got a 9 for all 3 cylinder balance tests. Anyone have an idea where to check next? I keep wondering if I have a stray vacuum leak somewhere by chance. All hoses are new....EGR is blocked off and all intake hoses are blocked or connected. So basically when started, the car will not immediately idle up to stay running and then go down once warmed up like newer cars do. To note I am running a tune that took out the EGR and other items so they no longer throw a code. Car runs same with or without the tune so I know that is not the issue. The tune is still the baseline with minor changes. Thank you for any input.
New guy here, but have been messing around with Fords for a while. This is my first true venture in the EFI realm. Anyways I have done tons of reading and worked on most issues people recommend on this site. I have done a 5.0 swap...engine came from a 91 T-bird, but using the SN95 EEC and a new T5Z transmission. What is happening is on a cold start up, it takes 2 to 3 tries for the car to stay running (it fires up immediately each time). Once it actually wants to stay started, the rpms will rise and then sharply fall to about 500 and then pick back up again to about 1,000.....then it settles down to 750. Also at random I will come to a stop and the car will die (yes the VSS is connected). Now let me list all the new parts I have installed....TFI, 2 distributors (One Cardone and the latest is a Richporter), Motorcraft TPS and IAC, ECT and ACT sensors (checked voltages and ohms), fuel pump, FPR, 65mm Throttle Body, MAF, rebuilt injectors, plugs, wires, etc. Before I was chasing down 2 codes for the TPS and the ECT. TPS I was using a Standard Products one and switched to a Motorcraft (fixed code) adjusted to about .85v, then put new harness on ECT as it was corroded and the ECT code went away. So now I no longer have any codes other than the fan ones and EVAP Canister(which are not connected), getting 11 code for the KOER and got a 9 for all 3 cylinder balance tests. Anyone have an idea where to check next? I keep wondering if I have a stray vacuum leak somewhere by chance. All hoses are new....EGR is blocked off and all intake hoses are blocked or connected. So basically when started, the car will not immediately idle up to stay running and then go down once warmed up like newer cars do. To note I am running a tune that took out the EGR and other items so they no longer throw a code. Car runs same with or without the tune so I know that is not the issue. The tune is still the baseline with minor changes. Thank you for any input.