sonofsoren
Member
- Joined
- Feb 7, 2017
- Location
- happy valley
I have been having a stalling issue with this for 2 months now there were a few things wrong that I have fixed my problem now is It stalled just died pulled off the road and did some checks fuel pressure is good at 43psi with no bleed down new bosch fuel pump under car and filter as well. OEM new fuel pump in tank new main relay OEM Volvo. relay is not getting hot.
I have spark and fuel no check engine lights has a new ECU 954 well new used as I thought the no injector pulse was due to the 939 ECU that was in the car. obviously, it wasn't the issue or maybe I have a bad ECU again I have t5 injectors with the resistor pack bypassed. the car ran fantastic for 3/4 of a tank after I installed the ECU was hot outside and didn't miss a beat until the temp outside cooled off and died on me that evening. so I had it towed home and pulled the ECU out and ezk out to check the wires between them on poles #1 and #28 on the ECU from the ezk. because everything else is good my ect is reading correctly new etc as well as a throttle switch is new and a cps is new bougicord all of them are testing out ok and both the ezk and ECU see the cps when tested with the diagnostic connector.
the only thing I have found any info on is if the ezk doesn't send the run signal to the ECU on #1 and #28 on the ECU the ECU will not pulse the injectors the noid light is bright with the key on at the injectors no pulse at all when motor is cranked. I have checked both the wires and have no grounds and have continuity.
now my question is according to the shop manuals the 131 code is for #1 not receiving a signal and #28 it does I do not have any codes whatsoever threw all of this. will the ezk send the same signal of 5volts to both poles so if I crank it to check I should see that? it doesn't say in the books for both only pole #1
forgot to mention it has a known working good MAF sensor as well.
edit timing belt is recently replaced and all marks line up correctly.
or am I missing something? in the books it says that if the tests are ok or not its in the wiring and connectors yet those are fine clean no corrosion and are making good contact.
this is the last thing I can think of or even find in the literature to solve my problem.
also does anyone know where on the ecu the injector driver is and if its replaceable/fixable?
edit: the radio suppression relay is also good I have 5 of them.
gah I am scatter brained today
1990 740tic b230 ft LH 2.4 mildly modded IPD turbo cam adjustable boost late 9 series ic and radiator ECU and EZK gold chipped with either TLAO or KL racing or stock chips. everything is set to stock atm trying to solve this issue IE boost and cam timing.
I have spark and fuel no check engine lights has a new ECU 954 well new used as I thought the no injector pulse was due to the 939 ECU that was in the car. obviously, it wasn't the issue or maybe I have a bad ECU again I have t5 injectors with the resistor pack bypassed. the car ran fantastic for 3/4 of a tank after I installed the ECU was hot outside and didn't miss a beat until the temp outside cooled off and died on me that evening. so I had it towed home and pulled the ECU out and ezk out to check the wires between them on poles #1 and #28 on the ECU from the ezk. because everything else is good my ect is reading correctly new etc as well as a throttle switch is new and a cps is new bougicord all of them are testing out ok and both the ezk and ECU see the cps when tested with the diagnostic connector.
the only thing I have found any info on is if the ezk doesn't send the run signal to the ECU on #1 and #28 on the ECU the ECU will not pulse the injectors the noid light is bright with the key on at the injectors no pulse at all when motor is cranked. I have checked both the wires and have no grounds and have continuity.
now my question is according to the shop manuals the 131 code is for #1 not receiving a signal and #28 it does I do not have any codes whatsoever threw all of this. will the ezk send the same signal of 5volts to both poles so if I crank it to check I should see that? it doesn't say in the books for both only pole #1
forgot to mention it has a known working good MAF sensor as well.
edit timing belt is recently replaced and all marks line up correctly.
or am I missing something? in the books it says that if the tests are ok or not its in the wiring and connectors yet those are fine clean no corrosion and are making good contact.
this is the last thing I can think of or even find in the literature to solve my problem.
also does anyone know where on the ecu the injector driver is and if its replaceable/fixable?
edit: the radio suppression relay is also good I have 5 of them.
gah I am scatter brained today
1990 740tic b230 ft LH 2.4 mildly modded IPD turbo cam adjustable boost late 9 series ic and radiator ECU and EZK gold chipped with either TLAO or KL racing or stock chips. everything is set to stock atm trying to solve this issue IE boost and cam timing.
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