new alternator...now more flash codes.. :(

Crop · 04-13-2012, 10:43 PM

im rdy to drive this POS into the ocean very soon..... just changed the alternator to figure out idle problem....and now i have a check engine light on....

he's my flash code... flash flash flash (pause) flash.......flash flash flash flash flash...(pause)flash

its a 7mgte 87....original issue has been stalling at stop sign or redlights (unless foot is on gas to keep idle up)...

Crop · 04-13-2012, 10:46 PM

would that be a 35?

cre · 04-13-2012, 11:13 PM

I don't understand what you mean with the flash and a dozen perods between it and the next five and then (pause) as well.

35 = * * * _ * * * * * _ _ _ (then repeats) * = flash ; _ = 1 second pause.

Crop · 04-13-2012, 11:33 PM

i guess im getting a code 35 then...3 flashes, a pause then 5 more, then a repeat.

car seems to stall now when i tap on the gas fast at idle.. it idles at around 500-600 (seems to go up and down between 500-600) ill tap on the gas to bring idle to 1k then let off the gas pedal then itll bog n stall..sometimes it recovers itself from stalling out.

i guess next on my list to purchase with my limited knowledge would be TPS? IACV?

Crop · 04-13-2012, 11:35 PM

high altitude compensation sensor? (hac) perhaps?

cre · 04-13-2012, 11:56 PM

HAC sensor is an external unit on '87 and '88 7M-GTE MKIIIs. It's a small black box with a three wire harness running to it which mounts to the same support that the glove box hinge mounts to. As long you're not driving at different elevations (see: driving in Kansas versus the Tibet) it should make little difference in actual performance.

Crop · 04-14-2012, 12:09 AM

What to do next? Should i just goto mech and let them check codes so i can narrow down the problem? Or try to check the TPS? Im kinda lost on ideas now.

Crop · 04-14-2012, 04:33 PM

ok after actually reading up on these ecu codes.. im pretty positive im getting a code 31 and a code 51... MAF and TPS seems like the culprits now....

Crop · 04-14-2012, 04:34 PM

*kvafm... thats what i meant instead of maf.

Crop · 04-14-2012, 07:17 PM

when i start the car cold it starts idle at around 900-1000 rpm...within about 3 seconds of this idle the check engine light goes on, at that exact moment idle drops to around 500 rpm and starts to fluctuates from 500-600rpms.. if i give it throttle to around 1000 the check engine light goes off, as soon as i let off throttle from that time the rpms drop to a stumbling 450-300 rpms with check engine light back on then returns to the 500-600 rpm range.

i started looking at the TPS connection and removed the wire harness for inspection.. i forgot to reconnect and started the engine..to my amazment there was NO difference in the cars idle or rpm from previous description above.. whatcha think???

i think i might be getting somewhere.. help me plz

04-13-2012, 10:43 PM	#1
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	new alternator...now more flash codes.. :( im rdy to drive this POS into the ocean very soon..... just changed the alternator to figure out idle problem....and now i have a check engine light on.... he's my flash code... flash flash flash (pause) flash.......flash flash flash flash flash...(pause)flash its a 7mgte 87....original issue has been stalling at stop sign or redlights (unless foot is on gas to keep idle up)... __________________ 1987 toyota supra turbo/targa 7mgte

04-13-2012, 10:46 PM	#2
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	would that be a 35? __________________ 1987 toyota supra turbo/targa 7mgte

04-13-2012, 11:13 PM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I don't understand what you mean with the flash and a dozen perods between it and the next five and then (pause) as well. 35 = * * * _ * * * * * _ _ _ (then repeats) * = flash ; _ = 1 second pause. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> Last edited by cre; 04-13-2012 at 11:22 PM. Reason: typo

04-13-2012, 11:33 PM	#4
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	i guess im getting a code 35 then...3 flashes, a pause then 5 more, then a repeat. car seems to stall now when i tap on the gas fast at idle.. it idles at around 500-600 (seems to go up and down between 500-600) ill tap on the gas to bring idle to 1k then let off the gas pedal then itll bog n stall..sometimes it recovers itself from stalling out. i guess next on my list to purchase with my limited knowledge would be TPS? IACV? __________________ 1987 toyota supra turbo/targa 7mgte

04-13-2012, 11:35 PM	#5
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	high altitude compensation sensor? (hac) perhaps? __________________ 1987 toyota supra turbo/targa 7mgte

04-13-2012, 11:56 PM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	HAC sensor is an external unit on '87 and '88 7M-GTE MKIIIs. It's a small black box with a three wire harness running to it which mounts to the same support that the glove box hinge mounts to. As long you're not driving at different elevations (see: driving in Kansas versus the Tibet) it should make little difference in actual performance. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

04-14-2012, 12:09 AM	#7
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	What to do next? Should i just goto mech and let them check codes so i can narrow down the problem? Or try to check the TPS? Im kinda lost on ideas now. __________________ 1987 toyota supra turbo/targa 7mgte

04-14-2012, 04:33 PM	#8
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	ok after actually reading up on these ecu codes.. im pretty positive im getting a code 31 and a code 51... MAF and TPS seems like the culprits now.... __________________ 1987 toyota supra turbo/targa 7mgte

04-14-2012, 04:34 PM	#9
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	*kvafm... thats what i meant instead of maf. __________________ 1987 toyota supra turbo/targa 7mgte

04-14-2012, 07:17 PM	#10
Crop Intake Join Date: Jan 2011 Location: Staten Island NY Posts: 44	when i start the car cold it starts idle at around 900-1000 rpm...within about 3 seconds of this idle the check engine light goes on, at that exact moment idle drops to around 500 rpm and starts to fluctuates from 500-600rpms.. if i give it throttle to around 1000 the check engine light goes off, as soon as i let off throttle from that time the rpms drop to a stumbling 450-300 rpms with check engine light back on then returns to the 500-600 rpm range. i started looking at the TPS connection and removed the wire harness for inspection.. i forgot to reconnect and started the engine..to my amazment there was NO difference in the cars idle or rpm from previous description above.. whatcha think??? i think i might be getting somewhere.. help me plz __________________ 1987 toyota supra turbo/targa 7mgte

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