North American Turbocoupe Organization



wierd idle
Nsw Offline
Senior Member
#1
when i goto start my car when its cold (like sitting over night) it will idle at about 1500 rpm steady wich i think is normal seeing how its cold. the strange thing is after a minute or 2 it will drop from 1500 to about 200rpm almost stall then go back up to around 1500. it happens like every 5 seconds then slowly gets better(takes mabey 5 minutes) and holds idle at 1000rpm
anyone have a similar problem or know what is going on??? its not the tps, its as know good one and is set properly. i think it might be the igniton switch because i doubt it has ever been replaced.
also it has terrible heat, it will blow hot for a few seconds then go back to luke warm. i read a post on this and someone mentioned that it could be the air blend doors. where is it and can it be adjusted i think thats the problem as i have test and replace many things including the thermostat 2tiwce and boiled it in water to make sure it opens and close.
thanks for any input
joe
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

Pete D Offline
Administrator
#2
Joe, I would pull the codes as a first step on the idle problem. If you haven't cleaned the IAC, that is always good thing to do also. I'll also send you some info on checking the ECT.

Which heating system do you have, the manual or the EATC? Which system you have could determine what the problem is.
Pete Dunham


Reply

Nsw Offline
Senior Member
#3
its the manual system
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

Nsw Offline
Senior Member
#4
its the manual system
as for the codes durring the running test and engine off i get no codes, i cant get it to output CM codes and when it firsst starts the koeo test it flashs extremly fast for a second or so. i tryed cleaning the iac and it diddent help
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

Pete D Offline
Administrator
#5
The blend door on the manual system are vacuum controlled. Check your email for diagrams.

Are you saying that you get no codes at all, not even "11s" (eleven)?

I'm not sure what you are saying about the KOEO test. Maybe you aren't waiting long enough, It does some odds and ends flashes before it reports codes.
Might want to look this over: http://www.turbotbird.com/techinfo/Retri..._codes.htm
Pete Dunham


Reply

Jeff K Offline
Administrator
#6
Brain fart, Pete? Blend dood on the manual system is cable controlled. Blend door on the EATC system is run by an electric motor with position feedback. The flapper doors that select recerc, panel, floor, etc are vac controlled on the manual system.

NSW... Sounds like you didnt wait long enough to get the codes. EEC outputs the codes in 2 formats.... first are the "fast codes", which appear as a very rapid blinking of the light on a $30 reader. The fast codes are read by big $$ readers, like the Ford STAR, SUPER STAR, and NGS readers. After the fast codes, the "slow codes" come out at 1/100 the "speed" of the fast codes. These are the flashes most all of us use. It takes close to a minute for the KOEO and CM codes to be outputted after the test is started.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
Reply

Pete D Offline
Administrator
#7
Thanks Jeff. Got to quite answering before coffee!
Pete Dunham


Reply

Nsw Offline
Senior Member
#8
Thanks for the diagrams pete, very helpfull, as for the codes im positive im giving it enough time to get into the CM and still get nothing, i do get the code 11 when the test is compleat. mabey i'll take it to ford and get them to do a code scan. that'll be the first time ive taken a car to a mechanic(would the star code scanner be less then 115dollars, thats what ford want to pull the codes)
thanks again
1988 5speed black every option. 3inch single turbo to tail(stinger), manual boost control. k&n cone walbro fuel pump

1986 xr4ti project car..... way to many mods to list.
Reply

4cammer72 Offline
Posting Freak
#9
there's plenty of parts stores that'll pull the codes for free. check around and save your money.
88tc (sold) but keeping an eye out.
Reply





Users browsing this thread:
1 Guest(s)



Theme © iAndrew 2018 - Software MyBB