rb20 issue once again. need help! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

rb240sxt · 02-06-2011, 10:05 PM

Ok so here it is. Rb20 in a s13 hatch. Ran fine until one day and it felt like there was no spark and fuel. Look at the plugs and its autolites. Change plugs with one step colder ngk gapped at .8 mm. Ran damn good until today. Doing the same thing. Well noticed the ignition control module was just laying on the valve cover. Zip tied that to the firewall for now. ran fine until a couple of mins ago. Gave it hell in 3rd and it stutters and hesitates like hell. It' on stock psi and I cleaned the maf twice. Has 40 psi fuel pressure at idle. Anything I need to check or any suggestions will help me alot!

Sileighty_85 · 02-06-2011, 10:19 PM

Vac/Boost leak check ECU for codes

rb240sxt · 02-06-2011, 10:34 PM

Quote:

Originally Posted by Sileighty_85

Vac/Boost leak check ECU for codes

Haven't done boost leak check but ecu isn't throwing any codes. Some other pple are saying the cas. Anyone else think this could be it. I'll be checking everything.at work tomorrow on my lunch. Also coolant temp sensor seems to not be working on my cluster. Another person said sometimes that can do it. Never heard that before ever

rb240sxt · 02-06-2011, 10:57 PM

Also it only does the bucking and misfire when its warm.. its does hesitate when cold but not bad. So far this is what I need to check. Cas, coils, ignitor. Anything else

rb240sxt · 02-07-2011, 11:04 AM

Put new coolant temp sensor in it for the ecu. Seems to run a bit better. But I haven't drove it a lot yet. Has anyone here done the wasted coil setup and if so how do u like it

Couped_up'd · 02-07-2011, 11:27 AM

I did the wasted GM coil pack convertion back in the day. It was a perfect upgrade. When ever the coil box goes out you are only out 100bux. Compaired to other options, that is a killer deal. There is grand nationals running 10s all day with this coil set up. Perfect upgrade IMO.

I ended up doing the GM coil convertion because my rb was cutting out. I did the swap and it still cut out. It ended up being the little black hose that goes arross the valve covers had a crack in it. The maf was getting un-read air, there for the cause of the cut out.

02-06-2011, 10:05 PM	#1
rb240sxt Join Date: Dec 2010 Location: winston salem Age: 31 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	rb20 issue once again. need help! Ok so here it is. Rb20 in a s13 hatch. Ran fine until one day and it felt like there was no spark and fuel. Look at the plugs and its autolites. Change plugs with one step colder ngk gapped at .8 mm. Ran damn good until today. Doing the same thing. Well noticed the ignition control module was just laying on the valve cover. Zip tied that to the firewall for now. ran fine until a couple of mins ago. Gave it hell in 3rd and it stutters and hesitates like hell. It' on stock psi and I cleaned the maf twice. Has 40 psi fuel pressure at idle. Anything I need to check or any suggestions will help me alot!

02-06-2011, 10:19 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Vac/Boost leak check ECU for codes __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

02-07-2011, 11:27 AM	#6
Couped_up'd Zilvia FREAK! Join Date: Feb 2009 Location: Candy Mountain Posts: 1,119 Trader Rating: (47) Feedback Score: 47 reviews	I did the wasted GM coil pack convertion back in the day. It was a perfect upgrade. When ever the coil box goes out you are only out 100bux. Compaired to other options, that is a killer deal. There is grand nationals running 10s all day with this coil set up. Perfect upgrade IMO. I ended up doing the GM coil convertion because my rb was cutting out. I did the swap and it still cut out. It ended up being the little black hose that goes arross the valve covers had a crack in it. The maf was getting un-read air, there for the cause of the cut out. __________________

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02-06-2011, 10:57 PM	#4
rb240sxt Join Date: Dec 2010 Location: winston salem Age: 31 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Also it only does the bucking and misfire when its warm.. its does hesitate when cold but not bad. So far this is what I need to check. Cas, coils, ignitor. Anything else

02-07-2011, 11:04 AM	#5
rb240sxt Join Date: Dec 2010 Location: winston salem Age: 31 Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Put new coolant temp sensor in it for the ecu. Seems to run a bit better. But I haven't drove it a lot yet. Has anyone here done the wasted coil setup and if so how do u like it