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usdm to jdm gone bad

 
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Old 10-20-2010, 04:57 PM
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usdm to jdm gone bad

ive just recently bought a 1998 lude that was swapped to jdmh22 its an older motor cuz its got the obd1 ecu and jumper harness. its runs for 20 mins and then shuts off. i havent tore in the the issue because id like to ask and see where i need to start at.. i was thinking fuel..to much or not enough check that by looking at the plugs.....if it isnt not the plugs and the fuel needs adjusted i have no idea where to start....
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Old 10-21-2010, 07:12 AM
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Re: usdm to jdm gone bad

heres a start

Diagnose and Repair why Car doesn't Start or Stalls - Troubleshooting Flowchart from Starter through Spark Failure and Fuel Pump
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Old 10-21-2010, 12:34 PM
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Re: usdm to jdm gone bad

that helps out but it doesnt help me out i can drive for 20 mins and then it shuts off...let it sit and then it fires back up.....
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Old 10-21-2010, 12:44 PM
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Re: usdm to jdm gone bad

Wow that chart is awesome!
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Old 10-21-2010, 12:53 PM
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Re: usdm to jdm gone bad

Fuel Pump, Fuel Relay

I would start there, I think a similar issue was addressed the other day and everyone said pump/relay.
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Old 10-21-2010, 01:15 PM
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Re: usdm to jdm gone bad

i searched to archives and didnt find anything that would help...im not sure wth it is but its getting anoyying
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Old 10-21-2010, 03:01 PM
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Re: usdm to jdm gone bad

if it runs for 20 mins and then shuts of sits for a little bit then starts back up i think its either to much or not enough..ill have an update tommarow im gonna tinker around with it
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Old 10-21-2010, 03:21 PM
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Re: usdm to jdm gone bad

I drove a blazer awhile back and it would run for about 15 minutes and die. then start up after about 10 minutes. It turned out to be vapor lock, the fuel line was to close to the exhaust. See if your fuel line is to close to something hot. Just a thought.
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Old 10-21-2010, 07:39 PM
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Re: usdm to jdm gone bad

thanks man I'll look...i am gonna tinker with it tommarow
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Old 10-23-2010, 04:49 AM
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Re: usdm to jdm gone bad

ok so upon tinkering it turns out its leaned out...plugs are greay and white after 20 30 mins of idle and then after a short test drive very easy...it runs ok...closer to the house i get on it and it turns off when it hits vtech...loud bang and stuters to a shut off and stop its been an hour and it wont start. the cars 98 prelude..its a 94 hhajdm obd2 componets so im told injectors fuel rail oil pan oil pump and ecu....its a cross bread i guess odb i block and head but obd2 componets..it came with 5 ecus... a pro tuned june a skunk2 obd 1 obd2 and some unknown...its not throwing any codes...so i dont know
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