JDM H22A swapped 5th gen BRUTAL IDLE SURGING!! HELP!!!
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JDM H22A swapped 5th gen BRUTAL IDLE SURGING!! HELP!!!
This is my first post so I’ll cut to the chase. I just swapped an H22A into my 5th gen lude and i can’t get it to stay at a steady rpm, it just fluctuates between 800-1600 and It’s driving me CRAZY. I’m using my stock H22a4 throttle body, wiring harness and ECU and I’m using the H22A intake manifold, EGR valve, and distributor. The only thing I’ve “messed with” is the distributor. I had to use the H22A distributor and rewire it because it has a TDC and CKP sensor in it and the H22a4 one doesn’t, it has the sensors in the block on the oil pump (I think). So I wired the TDC and CKP sensor from the distributor into the harness and It’s not throwing any codes. It will idle normally for about 20 seconds sometimes but then starts constantly going between around 800-1600rpm and staying at 1600 for about a second before going back down to 800. I’ve checked the sensors and vacuum lines as best as I can and still haven’t found the cause of the problem... HELLPP MEEEE
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Joined: Sep 2012
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From: Kuopio, Finland
Re: JDM H22A swapped 5th gen BRUTAL IDLE SURGING!! HELP!!!
Originally Posted by TimiK
quick what to do list
usually these things fix bad idle or/and hesitations:
- new spark plugs & wires
- new distributor cap & rotor
- new air/fuel filters
- clean injectors/iacv/egr/fitv
- bleed the coolant
- new pcv
- adjust valves and ignition
- adjust idle from tb's screw and throttle cable
- check does sensors work properly: map, iat and tps (and try calibrating tps)
- then check wires, connectors and hoses
- check ICM and ignition switch (there was 5th gen repair call for this also)
check o2 sensors and vacuum/exhaust leaks (check all the seals - IM/header/TB gaskets, injector seals, maybe even buy valve cover gasket set...)
check timing. after that: double check timing
clogged cat might you give some trouble as well (usually when driving) - check cats condition
if none of these seem to work - do compression and leak tests
and if you have chipped ecu and youre running it just with basemap, it might not work as well than properly tuned one
those are basic maintenance as well.
usually these things fix bad idle or/and hesitations:
- new spark plugs & wires
- new distributor cap & rotor
- new air/fuel filters
- clean injectors/iacv/egr/fitv
- bleed the coolant
- new pcv
- adjust valves and ignition
- adjust idle from tb's screw and throttle cable
- check does sensors work properly: map, iat and tps (and try calibrating tps)
- then check wires, connectors and hoses
- check ICM and ignition switch (there was 5th gen repair call for this also)
check o2 sensors and vacuum/exhaust leaks (check all the seals - IM/header/TB gaskets, injector seals, maybe even buy valve cover gasket set...)
check timing. after that: double check timing
clogged cat might you give some trouble as well (usually when driving) - check cats condition
if none of these seem to work - do compression and leak tests
and if you have chipped ecu and youre running it just with basemap, it might not work as well than properly tuned one
those are basic maintenance as well.
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