Just putting the finishing touches on a h22 swap dropped into a 93 SE. This motor used to be in a friends 1990 EX-R running fairly well with no issues, car was totalled so out come the motor and went into another friend's 93 SE. Did an auto to 5 speed conversion at the same time.
Now when it came out of the 90 Accord in Oct, it ran fine from what I recall. Had a couple codes like EGR but I fixed all those problems so the car could pass emissions last summer. After dropping it into the 93 SE, there is a bit of an idling issue.
Idle is kind of weird. Like I'll have it set at 850rpms, once I give it a rev to say 2500rpms, the rpms go up, come down to about 1100 or so, stay there for 2-3 seconds (sometimes even up to 5 seconds), and then drop to 850.
If that was the only problem, it's ok but say I have the rpms held right at 2000, if I turn on the AC, even with absolutely no movement of my feet, it will drop to roughly 1700 rpms. As soon as the compressor cycles off, it will bump back up to 2000. Is this normal?? I know at idle, when the compressor turns on, the idle will drop maybe from 850 to 800 but a drop of 300rpms when you are pressing the gas seems a bit much.
Also, up until this morning, when the car is partially warm, if I give it a rev to 2500rpms, the idle will go up, then drop down to about 500, kind of stumble, and come back up to 850. I have since recalibrated the tps (0.5V closed, 4.4V WOT with ignition at 2). FIV, IACV, all cleaned out so I don't know if it still stumbles at partial warmup. It does not do this when the car is cold and when the car is fully warmed up.
I am also having a tough time getting all the air out of the cooling system (air still coming out of the bleeder nipple even after car has run for 20 minutes or so) so this may have something to do with all the issues but with time running out before giving it back (tomorrow), I just want some suggestions on other things to check.
With the friend living an hour+ away, I don't want him to have to keep bring his car here to fix small issues so I would really like to get this figured out now. At the same time...it has not been run on the road much at all yet....would you guys think that may have something to do with it? I'd say 10 minutes of driving down the street and back for a total of 6kms/3.75miles and about 1 hour of idling.
All tune up type parts are new (plugs, cap, rotor, fuel filter, etc). I get no codes, cleaned out the iacv and fast idle valve (there was no coolant in the fiv which is why I realized the coolant has not been bled free of air), tried both Accord map and Prelude tb mounted map (seems to run better with the Accord map), timing set to 16degrees. Double checked the timing belt, it's on properly. When going for a drive, vtec engages properly, and no codes, good power, IAB seems to be working, but just has these standing idle kinks.
Oh, if it makes any difference:
00 Prelude base H22A
P13 ECU not chipped
all wires that were added were soldered and shrinkwrapped
93 SE harness
no codes, car runs well and pulls strong, vtec engages
THANKS IN ADVANCE!
Now when it came out of the 90 Accord in Oct, it ran fine from what I recall. Had a couple codes like EGR but I fixed all those problems so the car could pass emissions last summer. After dropping it into the 93 SE, there is a bit of an idling issue.
Idle is kind of weird. Like I'll have it set at 850rpms, once I give it a rev to say 2500rpms, the rpms go up, come down to about 1100 or so, stay there for 2-3 seconds (sometimes even up to 5 seconds), and then drop to 850.
If that was the only problem, it's ok but say I have the rpms held right at 2000, if I turn on the AC, even with absolutely no movement of my feet, it will drop to roughly 1700 rpms. As soon as the compressor cycles off, it will bump back up to 2000. Is this normal?? I know at idle, when the compressor turns on, the idle will drop maybe from 850 to 800 but a drop of 300rpms when you are pressing the gas seems a bit much.
Also, up until this morning, when the car is partially warm, if I give it a rev to 2500rpms, the idle will go up, then drop down to about 500, kind of stumble, and come back up to 850. I have since recalibrated the tps (0.5V closed, 4.4V WOT with ignition at 2). FIV, IACV, all cleaned out so I don't know if it still stumbles at partial warmup. It does not do this when the car is cold and when the car is fully warmed up.
I am also having a tough time getting all the air out of the cooling system (air still coming out of the bleeder nipple even after car has run for 20 minutes or so) so this may have something to do with all the issues but with time running out before giving it back (tomorrow), I just want some suggestions on other things to check.
With the friend living an hour+ away, I don't want him to have to keep bring his car here to fix small issues so I would really like to get this figured out now. At the same time...it has not been run on the road much at all yet....would you guys think that may have something to do with it? I'd say 10 minutes of driving down the street and back for a total of 6kms/3.75miles and about 1 hour of idling.
All tune up type parts are new (plugs, cap, rotor, fuel filter, etc). I get no codes, cleaned out the iacv and fast idle valve (there was no coolant in the fiv which is why I realized the coolant has not been bled free of air), tried both Accord map and Prelude tb mounted map (seems to run better with the Accord map), timing set to 16degrees. Double checked the timing belt, it's on properly. When going for a drive, vtec engages properly, and no codes, good power, IAB seems to be working, but just has these standing idle kinks.
Oh, if it makes any difference:
00 Prelude base H22A
P13 ECU not chipped
all wires that were added were soldered and shrinkwrapped
93 SE harness
no codes, car runs well and pulls strong, vtec engages
THANKS IN ADVANCE!
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