91 Door Locks...HELP - Page 2 - ZR-1 Net Registry Forums

DaveP · 02-19-2021

Door ajar switches have nothing to do with the power locks in a 1991.
There are no relays in the lock system in a 1991.

Z51JEFF · 02-19-2021

This makes no sense,nothing is going to close the door latches but the striker in the door or moving it by hand.

viper107 · 02-19-2021

it happens, seen it on all car makes 50 or so times in my life,dont know how,but it happens

Flyman 27 · 02-19-2021

So far, I have encountered the problems twice. Very odd symptoms, like the doors locking you out if you leave the car running, and sometimes with the engine off. Having the alarm system going off seemingly randomly. "System" lights flashing occasionally.
There are a lot of seemingly random symptoms.
Both times they were ZR-1s.
Both times they were '91s.
Both times the fault turned out to be problems with the door ajar switches.
After replacing the switches all symptoms went away.

Is David Swieboda still a member here? Ask him.

secondchance · 02-19-2021

Faulty door switch often (maybe not always) is caused by self adjusting plunger being pushed in too far. When this happens, even when the door is closed, due to switch not being pushed in enough, system thinks the door is open. One symtom I noticed is, while driving, power lock would cycle while driving and door light would flicker simultaneously. Fix when caused by self adjusting plunger is to pull the plunger out, and wrap the plunger with a piece of 1/8? vacuum hose slit length wise. This keeps switch extension piece from sliding in defeating pushing of the switch.
I have not dealt with latch closing by itself but addressing door switch I described would be simple and worth a try.

02-19-2021	#11
DaveP Join Date: Jun 2010 Location: Los Angeles Posts: 9	Re: 91 Door Locks...HELP Door ajar switches have nothing to do with the power locks in a 1991. There are no relays in the lock system in a 1991.

02-19-2021	#12
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,085	Re: 91 Door Locks...HELP This makes no sense,nothing is going to close the door latches but the striker in the door or moving it by hand.

02-19-2021	#13
viper107 Join Date: Dec 2019 Location: st louis mo Posts: 749	Re: 91 Door Locks...HELP it happens, seen it on all car makes 50 or so times in my life,dont know how,but it happens __________________ 95 admiral blue z(sold)/ / 93 ruby z(sold) 91 steel blue z/95 aqua z haibeck 510, 91 callaway 415 areobody #5

02-19-2021	#14
Flyman 27 Join Date: Apr 2017 Location: Wayne Illinois Posts: 402	Re: 91 Door Locks...HELP So far, I have encountered the problems twice. Very odd symptoms, like the doors locking you out if you leave the car running, and sometimes with the engine off. Having the alarm system going off seemingly randomly. "System" lights flashing occasionally. There are a lot of seemingly random symptoms. Both times they were ZR-1s. Both times they were '91s. Both times the fault turned out to be problems with the door ajar switches. After replacing the switches all symptoms went away. Is David Swieboda still a member here? Ask him. __________________ 91-#1935 Black/black & gray, Haibeck 500 Cams by Pete

02-19-2021	#15
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,727	Re: 91 Door Locks...HELP Faulty door switch often (maybe not always) is caused by self adjusting plunger being pushed in too far. When this happens, even when the door is closed, due to switch not being pushed in enough, system thinks the door is open. One symtom I noticed is, while driving, power lock would cycle while driving and door light would flicker simultaneously. Fix when caused by self adjusting plunger is to pull the plunger out, and wrap the plunger with a piece of 1/8? vacuum hose slit length wise. This keeps switch extension piece from sliding in defeating pushing of the switch. I have not dealt with latch closing by itself but addressing door switch I described would be simple and worth a try.