dang the video blocks the SPEEDO. so?
wow.
only happens driving, ?
if yes, fixing driving problems with no scan tool is real hard work, i have run wires from test points to cab to do that. very tedious.... but 100% effective every time.
only one question , what ECU signal or fuel pressure is causing this. the ISC is not ACTIVE moving fast, so is not ISC, doing that.
if fuel pressure is good at 80km? not surging, bad PFreg.. ( i had a dash gauge for that....)
if pressure is good then, it's a bad input to the ECU.
but what one?
the scan tool would show this in 1min flat. bam, xxx is wrong..... gotta love OBD1, and hard problems.....
I'd get the Rhinotool. and see it.
the ECU has these inputs.
TPS idle, switch, (im sure its not stuck at 0v running fast, if yes, bam.)
TPS TP pin, if bouncing all over, this can cause that. all cars.... ecu thinks your foot (right) is bouncing and BELIVES THAT. it cant see you, or foot but just sees that as normal and is not.
O2 sensor, nah, but does the bounce happen ever while acceleration?
P/S overload switch, not stuck at ground. will raise idle but not foot in gas.
A/C active sets idle up 200, but not foot in gas. no. that that input.
ill post page
here is the daunting page of all pins. ecu.
there are 2 pages. see my red words, for INPUTS?
http://www.fixkick.com/specs/95ecu1w.jpg
pg2. fsm pages, not guessing...
http://www.fixkick.com/specs/95ecu2w.jpg
the throttle angle is, B7 , about 2v, steady cruise never bouncing with steady right foot.
the maf pin B8 will be 2 to 3 volts, not bouncing, at idle does tapping side of MAF cause RPM changes?, yes, it's BAD. (actual volts a function of load. hills ,speed,etc)
the scan tool would show
if the ECU holds closed loop at light steady cruise, flat ground, if not i fix that first.
and if AFR is way off. LONG TERM FUEL TRIM.
The ECU knows whats going on the scan tool tells you all that.
with out this tool, we are effectually blind, i have dataloggers that erase this blindness, (home made) and a logging DMM. too.
but if i had no such tools id own a rhinoscan tool
http://www.rhinopower.org/
the software is free, click software ,
we have one poster here using it. with nice photo;s
see cosmic
photo bucket
http://s957.photobucket.com/user/johnhov...1.png.html
does the Fpreg vacuum hose drip fuel ? when popped off?
wow.
only happens driving, ?
if yes, fixing driving problems with no scan tool is real hard work, i have run wires from test points to cab to do that. very tedious.... but 100% effective every time.
only one question , what ECU signal or fuel pressure is causing this. the ISC is not ACTIVE moving fast, so is not ISC, doing that.
if fuel pressure is good at 80km? not surging, bad PFreg.. ( i had a dash gauge for that....)
if pressure is good then, it's a bad input to the ECU.
but what one?
the scan tool would show this in 1min flat. bam, xxx is wrong..... gotta love OBD1, and hard problems.....
I'd get the Rhinotool. and see it.
the ECU has these inputs.
TPS idle, switch, (im sure its not stuck at 0v running fast, if yes, bam.)
TPS TP pin, if bouncing all over, this can cause that. all cars.... ecu thinks your foot (right) is bouncing and BELIVES THAT. it cant see you, or foot but just sees that as normal and is not.
O2 sensor, nah, but does the bounce happen ever while acceleration?
P/S overload switch, not stuck at ground. will raise idle but not foot in gas.
A/C active sets idle up 200, but not foot in gas. no. that that input.
ill post page
here is the daunting page of all pins. ecu.
there are 2 pages. see my red words, for INPUTS?
http://www.fixkick.com/specs/95ecu1w.jpg
pg2. fsm pages, not guessing...
http://www.fixkick.com/specs/95ecu2w.jpg
the throttle angle is, B7 , about 2v, steady cruise never bouncing with steady right foot.
the maf pin B8 will be 2 to 3 volts, not bouncing, at idle does tapping side of MAF cause RPM changes?, yes, it's BAD. (actual volts a function of load. hills ,speed,etc)
the scan tool would show
if the ECU holds closed loop at light steady cruise, flat ground, if not i fix that first.
and if AFR is way off. LONG TERM FUEL TRIM.
The ECU knows whats going on the scan tool tells you all that.
with out this tool, we are effectually blind, i have dataloggers that erase this blindness, (home made) and a logging DMM. too.
but if i had no such tools id own a rhinoscan tool
http://www.rhinopower.org/
the software is free, click software ,
we have one poster here using it. with nice photo;s
see cosmic
photo bucket
http://s957.photobucket.com/user/johnhov...1.png.html
does the Fpreg vacuum hose drip fuel ? when popped off?
http://www.fixkick.com