Btcox

Do you know of a good way to test/check those?

Alright, replaced the Ignition Control Module and still the same issue. We were driving it yesterday and it started hesitating again, so I wanted to try a few things. I thought this was interesting to note, if you put it in neutral the rpms rev normally but if you put it back in drive or any gear (automatic transmission) it starts to hesitate again. I'm wondering if it may be related to pressure in the transmission rather than an issue with the engine. Still no check engine light

I did not, my wife drives it for work and doesn't have time to stop and freeze spray it while she's working. When I drive it I can't reduplicate the issue unless I drive it for a few hours when it's hot outside. By the time she gets home it's not as hot out anymore and I just end up driving around for hours wasting gas so I ended up ordering a new one

Update: By looking at the codes, there is no code for an ignition (ignitor) control module for the impreza so this could explain no CEL. Its a pricey part but I've ordered a replacement and should arrive Thursday. I'll be back with an update after install and test.

Thanks! I'll start tinkering with that and or replace it, then be back with an update.

It's worth a shot, I would probably use a can of contact cleaner though. I'll have to try that next time it messes up

Thanks for the info! After the issue starts it does not stop until the car has cooled down. The typical quick fix is to pull over, turn off engine, and wait for it to cool down, then start up again and drive for a few minutes until it does it again. The problem does not occur at engine operating temp but is weather/heat related somehow, typically when it's over 80 degrees Fahrenheit on a hot sunny day. The hotter outside, the worse it gets, typically under a heavy load (accelerating or going up hill). No check engine light has ever come on. So, the fuel pump has been replaced already but I have not replaced the ignition module. I'm attaching a picture to make sure I'm thinking of the correct part you are talking about

Thanks! I will definitely look into that

Replaced the crankshaft position sensor, same issue. The other day my wife ran it too low on gas and experienced the same issue. I'm thinking maybe I need to replace the fuel injectors next

Alright I have replaced the PCV valve and am still having the same problem. Additionally, I swapped out the IAC and TPS with another used one I purchased from Japan. Those test fine as well. Should I start looking into an ECM or possibly the MAF sensor? I'm running out of ideas Here is a video of it acting up. Not sure if this will help or not

Have not replaced PCV valve and no to the EGR

Ordered a used throttle body assembly from the UK with TPS and IACV attached so I will try to use those when they get here but I tested both the TPS and IACV yesterday and both test good. Removed the IACV and put 12 volts to it. It operates as it should with no binding that I can tell. Might be different under extreme heat but that would be harder to test. TPS resistance moves smooth with no jumping. Again could be different under heat but hard to test. Cleaned all the grounds under the hood. Car ran good in 70 degree weather for one day, then the following day ran awful at noon when sun was out and temp was in the 80's Since I reset the ECU, I have not been able to get another code. I plugged the 2 black wires together, I think those are used for view stored codes and have not been cleared. Is there anything else I should replace or anything else I can test/check for to find the issue? Someone at her work mentioned it could be the ECU overheating but I think those are located inside the car under the glovebox which should stay cool being inside the car, so I kinda doubt that but I could be wrong

Okay, l see what you are saying. I have that and a FICD which is mounted on the intake.

I think your thinking of the device called a FICD or fast idle control device. That one adjusts the idle up when you turn the AC on

Gotcha, yeah that's a tricky one to find. Might have to just order a throttle body from UK with all the parts on it and see if that works. Or see if a US throttle body will fit and install new US parts

After research, Black to black plug pulls stored engine codes. I connected these and received a code 24 Reset ECU and waiting to see if the code comes back According to that website, code 24 is "Air control valve or circuit; Idle speed control solenoid valve" Is this referring to the MAF sensor or the IAC solenoid valve, or both?

Thanks! EJ18 engine and are you talking about watching for rust in general or is there a particular spot that they rust at?

NGK Iridium IX Spark Plugs, OmniSpark Spark Plug Wire Set, Import Direct Ignition Coil. I still have the original ignition coil so I can put that back on, plugs that I pulled out of if were mismatched, not gaped correctly and worn. After replacing all these parts, the problem didn't change so I left the new parts on. No check engine light and no way to hook up to pull codes. Not sure how they do it in Japan, but I've looked everywhere for a port and have not been able to find anywhere an OBD reader could hook up to.

I have a 1995 Subaru Impreza HX Edition S (I'm aware that isn't a valid US model) visually similar to a sport wagon. This is a JDM Subaru so parts have not been easy to find for it due to me not knowing what US model it is considered. It is a right-hand drive vehicle, EJ18. The problem I'm running into is that when outside temp is hot/warm the car begins to bog or hesitate when accelerating. Never had this issue in the winter or fall. The warmer it got outside the worse the problem was. Idles fine and drives great in the morning when it's cooler but right at noon when the sun is blazing is when it starts acting up. This is my wife's vehicle, she is a postal driver so it's being driven for many hours each day. It seems that attempting to go uphill is when it acts up the worst once it's hot. I'm unsure what I need to do to fix this problem. Any help would be greatly appreciated. Here is the list of parts I've already replaced: New Oil Pan Gasket New Rear Main Seal New Oil Separator Plate and Seal New Radiator New Coolant Temp Sensor New Coolant Gauge Sensor New Spark Plugs New Ignition Coil Wires New Ignition Coil New Fuel Pump New Fuel Filter and Sock New Air Filter New Harmonic Balancer New Serpentine Belts New o2 Sensor and Bung New Alternator Added 2 transmission Coolers

Hey everyone! Last year I purchased a 1995 JDM Subaru Impreza HX 4WD Edition S for my wife as a postal driver. She needed a right-hand drive vehicle for the job. I'm excited to learn more about Subarus since I love this little car. We picked it up from an import dealer in South Carolina who imported this one from Japan. I look forward to meeting everyone and learning more! I'm new to this so I think I've attached a picture of the car to this post but well see lol