Acceleration issue

GettaRobo · 04-29-2010, 03:01 AM

Still in the process of throwing everything back together. The guy who owned the car before me did silly things with the injector connectors. To make a long story short, I have new connectors on, going to throw it back together tomorrow and test. For anyone interested, here's a youtube video I made last year of what the car does. Note the RPM's in relation to the speed:

http://www.youtube.com/watch?v=9p67-hROA-k

Note this is at WOT at 5k, I'm not holding off at all and the RPM's don't rise.

btwilson86 · 04-29-2010, 05:48 AM

Can't tell for sure if this is the current problem, but I did notice in your video that you have a transmission diagnostic code stored. Check that and fix it and see what happens

GettaRobo · 04-29-2010, 05:58 AM

The error code is code 61 (speed sensor 2.) Turns out I need to do something special to get it to work as well as it's an ABS sensor on a non ABS car (solved in another thread.) That aside, I doubt that the speed sensor would cause this issue although I could be mistaken.

btwilson86 · 04-29-2010, 06:04 AM

From what I'm reading, the error code aside it sounds like a timing issue. Have you checked your mechanical timing as well as ignition?

kamikazemkiii · 04-29-2010, 10:59 AM

you have a boost leak

TripleC · 04-29-2010, 01:16 PM

What about the gap on your plugs?? sometimes that can cause detonation issues while under load.
It does for sure on a turbo car

GettaRobo · 04-29-2010, 03:39 PM

Well, the timing COULD be off. Does ignition timing have to do with the distributor? I THINK they've both been checked but I'll make sure. I've had some work done since then so I should really take another video (the car still bogs at 4-5k). There can't really be a boost leak since the car is NA good suggestion though. As for the spark plug gap, I checked it last week and they're at 0.043 right where they should be.

btwilson86 · 04-29-2010, 05:26 PM

Yes, ignition timing has to do with the distributor. It is definitely worth checking, as a lot of people do not set it properly in the first place. It's important that when checking and setting the ignition timing the engine is at operating temperature and the diagnostic box is jumped in the same way you do for checking codes. You then set your base timing to 10? BTDC.

Check here, borrowed this from BillUK in another thread

*Note: You will connect your timing light to the No. 1 plug wire on your N/A*

04-29-2010, 05:48 AM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Can't tell for sure if this is the current problem, but I did notice in your video that you have a transmission diagnostic code stored. Check that and fix it and see what happens __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

04-29-2010, 06:04 AM	#4
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	From what I'm reading, the error code aside it sounds like a timing issue. Have you checked your mechanical timing as well as ignition? __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

04-29-2010, 01:16 PM	#6
TripleC 3" Exhaust Join Date: Nov 2009 Location: Fort Collins, CO Posts: 103	What about the gap on your plugs?? sometimes that can cause detonation issues while under load. It does for sure on a turbo car __________________ 1JZGTE ,R154, Hallman Boost Controller, HKS bov, HKS Mushroom top Air Filter, HKS Front Mount Intercooler, Greedy Turbo Timer, PLX300 AFC, Custom Divorced Y-pipe, Custom Intercooler Pipeing, RS-R Concept Exhaust, Optima Red Top Battery, Strut bar Brembo Rotors, A1 Traction arms, Megan Coilovers, Stern ST 2 wheels rear 265x30 r19 - front 245x35 r19, New Front Lip, 18 x 8 and 18 x 9 MRR HR2 with whatever for Drift treads 2 additional C12A turbo's(Extra)

04-29-2010, 05:26 PM	#8
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Yes, ignition timing has to do with the distributor. It is definitely worth checking, as a lot of people do not set it properly in the first place. It's important that when checking and setting the ignition timing the engine is at operating temperature and the diagnostic box is jumped in the same way you do for checking codes. You then set your base timing to 10? BTDC. Check here, borrowed this from BillUK in another thread Note: You will connect your timing light to the No. 1 plug wire on your N/A __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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04-29-2010, 03:01 AM	#1
GettaRobo 3" Exhaust Join Date: Apr 2009 Location: Saskatoon, SK Posts: 65	Still in the process of throwing everything back together. The guy who owned the car before me did silly things with the injector connectors. To make a long story short, I have new connectors on, going to throw it back together tomorrow and test. For anyone interested, here's a youtube video I made last year of what the car does. Note the RPM's in relation to the speed: http://www.youtube.com/watch?v=9p67-hROA-k Note this is at WOT at 5k, I'm not holding off at all and the RPM's don't rise.

04-29-2010, 05:58 AM	#3
GettaRobo 3" Exhaust Join Date: Apr 2009 Location: Saskatoon, SK Posts: 65	The error code is code 61 (speed sensor 2.) Turns out I need to do something special to get it to work as well as it's an ABS sensor on a non ABS car (solved in another thread.) That aside, I doubt that the speed sensor would cause this issue although I could be mistaken.

04-29-2010, 10:59 AM	#5
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	you have a boost leak

04-29-2010, 03:39 PM	#7
GettaRobo 3" Exhaust Join Date: Apr 2009 Location: Saskatoon, SK Posts: 65	Well, the timing COULD be off. Does ignition timing have to do with the distributor? I THINK they've both been checked but I'll make sure. I've had some work done since then so I should really take another video (the car still bogs at 4-5k). There can't really be a boost leak since the car is NA good suggestion though. As for the spark plug gap, I checked it last week and they're at 0.043 right where they should be.

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