Tremendous Thanks to All the comments, suggestions and questions on this forum! After reading for months on this forum, may I ask Your help with a P0087 problem... J08E 2008
I'm thrown this code every fresh key start and traveling over 1500 rpm's or above. My Autel Scanner says my "Target common rail pressure" is 26K - 27K during a 'Drive cycle', but "Common rail pressure" top out at only 20K - 21K THROTTLE DOWN... the instance I let off throttle (Manual Tranny), common rail HITS Target and then follows Target back down, common rail pressure follows Target up again until Target pressure demands above 22K, at which point common rail tops off at 21K. When I preform a dedicated SCV test by the recommend rpms, Idle and just above, Common Rail pressures follow Target pressures in all %'s variations in sync. SCV "drive currents" 1440mA - 1667mA, SCV "Feedback 220 - 204mA, Fuel temps never above 148 F. But durring a "Drive Cycle" when common rail pressures top out at 21K, SCV current decreases to 700 - 900mA, Feedback similar, Fuel temps never above 150 F.
Per suggested here, I have 'Isolated' the primary Tank, filter, lines, hoses and fuel pump inlet banjo filter... no change. I've isolated the 'High Pressure Limiter' by removing the banjo return, capping and checked for 'unseating' at the pressure limiter... 5 drops, maybe, in 20 miles. Three SCV replacements, one orignal two new... same results.
DPR Clean... which I belive says my injectors are not bleeding.
Hino dealer say new injectors and / or fuel Pump. I said thanks, but I know a Good Hino Forum... and I'm so Happy to be Here!! Thanks for You Time!!
I'm thrown this code every fresh key start and traveling over 1500 rpm's or above. My Autel Scanner says my "Target common rail pressure" is 26K - 27K during a 'Drive cycle', but "Common rail pressure" top out at only 20K - 21K THROTTLE DOWN... the instance I let off throttle (Manual Tranny), common rail HITS Target and then follows Target back down, common rail pressure follows Target up again until Target pressure demands above 22K, at which point common rail tops off at 21K. When I preform a dedicated SCV test by the recommend rpms, Idle and just above, Common Rail pressures follow Target pressures in all %'s variations in sync. SCV "drive currents" 1440mA - 1667mA, SCV "Feedback 220 - 204mA, Fuel temps never above 148 F. But durring a "Drive Cycle" when common rail pressures top out at 21K, SCV current decreases to 700 - 900mA, Feedback similar, Fuel temps never above 150 F.
Per suggested here, I have 'Isolated' the primary Tank, filter, lines, hoses and fuel pump inlet banjo filter... no change. I've isolated the 'High Pressure Limiter' by removing the banjo return, capping and checked for 'unseating' at the pressure limiter... 5 drops, maybe, in 20 miles. Three SCV replacements, one orignal two new... same results.
DPR Clean... which I belive says my injectors are not bleeding.
Hino dealer say new injectors and / or fuel Pump. I said thanks, but I know a Good Hino Forum... and I'm so Happy to be Here!! Thanks for You Time!!
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