CAR DIES WHEN YOU TOUCH GAS

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CAR DIES WHEN YOU TOUCH GAS
Topic Started: Aug 20 2009, 08:48 PM (397 Views)
240_fun	Aug 20 2009, 08:48 PM Post #1
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	So i just finished installing my T25 and i go to start the car and BAM starts right up... awesome I go to rev the car and it dies... start it again and touch the gas... almost dies but comes back... The car idles veryyyy smoothly and at 1000 rpm without IACV... timing is right, TPS sensor is brand new and adjusted right, I have 15psi of vacuum at idle which is prolly from a broken t bolt clamp but would it really cause that much of a problem? Could I have a bad MAF? whats going on???



240Smoke	Aug 21 2009, 12:18 AM Post #2
[]D [] []\/[] []D Posts: 4,419 Group: Members Member #52 Joined: March 8, 2009 My Ride: 1992 RPS13, 1992 240SX	what work did you do? are you injectors stock? any rewiring? let me know what you did and I can help. sounds like a TPS problem. unplug your maf. you should be able to rev it to 2500 rpm then it will stop.



240_fun	Aug 21 2009, 01:19 PM Post #3
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	ok so now i have a different problem... and i didnt touch anything go to start the car... and crank crank crank vroooo---fail... okkk... so then i step on the gas and start the car.... it revs to 3500 sputters and dies... tightened all the tbolt clamps cept for the one thats broke.



240_fun	Aug 21 2009, 01:22 PM Post #4
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	240Smoke Aug 21 2009, 12:18 AM what work did you do? are you injectors stock? any rewiring? let me know what you did and I can help. sounds like a TPS problem. unplug your maf. you should be able to rev it to 2500 rpm then it will stop. tps is brand new and adjusted corectly... t25 370cc injectors stock maf FMIC Emance ECU (used on the exact setup i have and ran perfect)... no rewiring except for IAC removal and new tps sensor... I did however get a manual trans tps but i heard that it shouldnt make a difference... I unplugged my MAF before this new problem and it didnt change anything



240Smoke	Aug 21 2009, 04:08 PM Post #5
[]D [] []\/[] []D Posts: 4,419 Group: Members Member #52 Joined: March 8, 2009 My Ride: 1992 RPS13, 1992 240SX	check to make sure all your couplers are tight. also what codes is your computer throwing?



240_fun	Aug 21 2009, 09:20 PM Post #6
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	No codes lol



OutToWinPAHC	Aug 21 2009, 09:25 PM Post #7
Your girls other man Posts: 667 Group: Members Member #38 Joined: March 1, 2009	Emance .... theres the problem.... spend the money get a real tune. Its dying out due to a fuel issue so it sounds. Either the MAF/TPS or basic ECU calculation. I would pull codes man. Where is the MAF located now? any harness splicing/solder?



240Smoke	Aug 21 2009, 09:25 PM Post #8
[]D [] []\/[] []D Posts: 4,419 Group: Members Member #52 Joined: March 8, 2009 My Ride: 1992 RPS13, 1992 240SX	is your iacv connected?



Nick Merrone	Aug 21 2009, 09:50 PM Post #9
eat me. Posts: 7,366 Group: Admin Member #1 Joined: February 7, 2009 Location: Philly,PA My Ride: 90 hatch	He has no iacv...



240Smoke	Aug 21 2009, 09:54 PM Post #10
[]D [] []\/[] []D Posts: 4,419 Group: Members Member #52 Joined: March 8, 2009 My Ride: 1992 RPS13, 1992 240SX	so your car is tuned to run without the iacv?



Nick Merrone	Aug 21 2009, 10:08 PM Post #11
eat me. Posts: 7,366 Group: Admin Member #1 Joined: February 7, 2009 Location: Philly,PA My Ride: 90 hatch	idk ask him, he has a bare manifold. all empty. haha. i ran the intercooler piping and can't wait to do mine (:



240Smoke	Aug 22 2009, 12:06 PM Post #12
[]D [] []\/[] []D Posts: 4,419 Group: Members Member #52 Joined: March 8, 2009 My Ride: 1992 RPS13, 1992 240SX	IACV is very important for a car to run properly....



240_fun	Aug 22 2009, 01:10 PM Post #13
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	240Smoke Aug 22 2009, 12:06 PM IACV is very important for a car to run properly.... For a track car its not nessicery... just opened the throttle about 2% set the TPS signal at about .4....



OutToWinPAHC	Aug 22 2009, 01:27 PM Post #14
Your girls other man Posts: 667 Group: Members Member #38 Joined: March 1, 2009	IACV would not cause an issue at 3500rpm. Did you pull the cams? how is the timing? Fuel pressure? MAF reading look good? IF all look good and fuel pressure is on, I would check the timing again, check the dist, and maybe borrow a MAF to see if it helps.



240_fun	Aug 22 2009, 01:40 PM Post #15
I'm Poor Posts: 1,138 Group: Members Member #46 Joined: March 3, 2009 Location: Pennington, NJ My Ride: 1992 240sx SE Hatch / 2000 Ranger XLT Off-Road	OutToWinPAHC Aug 22 2009, 01:27 PM IACV would not cause an issue at 3500rpm. Did you pull the cams? how is the timing? Fuel pressure? MAF reading look good? IF all look good and fuel pressure is on, I would check the timing again, check the dist, and maybe borrow a MAF to see if it helps. The FPR is set to 36psi and the wires plugs cap rotor are all fine.... dizzy is set at 20btdc ect... Im going to go pick up a MAF and Pigtail ftom the junkyard later. Im hoping thats it



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