On and off knocking at idle.

Braydon · 04-17-2011, 10:07 PM

Hey, I've got a recently acquired 93 explorer xlt and at idle there is a knock that is on for a few seconds then goes completely away for a few seconds, and then back on again. The guy that owned it before said it was a sticky valve, but i dont understand how it could knock one second and be silent the next. Im planning to run some injector cleaner through it the next week sometime. do you think it would fix it?

*Sams01XplrSprt* · 04-18-2011, 02:24 PM

welcome braydon

88redneck · 04-21-2011, 01:35 AM

My truck does that too i was told that was the a/c

TonkaRanger3.0 · 04-21-2011, 04:33 AM

i have a '93 4.0 ranger it ticks and goes away i believe its lifter tick caused by a failing lifter

sanseven · 04-21-2011, 05:28 AM

not sure, go for some professional

88redneck · 04-21-2011, 12:38 PM

I agree my last car was a ford zx2 and it had a taping sound and and when i took it in they said it need a valve job new cams and the head need to be shaved. and found out later it had a small hole in the fourth piston, so I traded it and got me a exploder.

**BrooklynBay** · 04-26-2011, 10:33 PM

Welcome to this forum! I've moved your thread into the stock 91-94 section. Check the belt, tensioner, alternator, P/S pump, and water pump.

*BrianDye* · 04-26-2011, 11:08 PM

Is it a knock or a tick? If its a ticking, its most likely the lifters. VERY common on first gens.

Braydon · 04-26-2011, 11:34 PM

Its a ticking noise. So I think a valve is sticking. I ran some gumout through it this tank of gas and its at a quarter tank now. I think it helped alittle. I also plan to do seafoam in about a month and a half.

1995 Explorer · 04-27-2011, 12:13 AM

I get a little ticking at cold start, however, this problem goes away once the the truck warms up. Are you sure that the IAC valve is not sticking at starting at startup?

westfield · 04-27-2011, 06:37 AM

Quote:

Originally Posted by sanseven

not sure, go for some professional

If we all took this advice we would not need this board !

Anyway, mine does not knock but I do get some what seems to be valve ticking and goes away in a few seconds.

If it is a rod knock, it doesl not go away, does it ?

*SwaintaN* · 04-27-2011, 12:14 PM

Quote:

Originally Posted by Braydon

Hey, I've got a recently acquired 93 explorer xlt and at idle there is a knock that is on for a few seconds then goes completely away for a few seconds, and then back on again. The guy that owned it before said it was a sticky valve, but i dont understand how it could knock one second and be silent the next. Im planning to run some injector cleaner through it the next week sometime. do you think it would fix it?

lifter trick.. mine does it.. been diagnosed.. just a lifter

*SwaintaN* · 04-27-2011, 12:14 PM

Quote:

Originally Posted by westfield

If we all took this advice we would not need this board !

Anyway, mine does not knock but I do get some what seems to be valve ticking and goes away in a few seconds.

If it is a rod knock, it doesl not go away, does it ?

i rod can knock if your spun a bearing.. if you spun a bearing your looking at expensive repairs..

zachsellers · 04-27-2011, 02:01 PM

Quote:

Originally Posted by Braydon

Hey, I've got a recently acquired 93 explorer xlt and at idle there is a knock that is on for a few seconds then goes completely away for a few seconds, and then back on again. The guy that owned it before said it was a sticky valve, but i dont understand how it could knock one second and be silent the next. Im planning to run some injector cleaner through it the next week sometime. do you think it would fix it?

Hey man Im also new to this but my 1993 limited has a slight tick when i first start it and its cold. Yeah mine tend to go away after its warms up! L

ifters?

Braydon · 04-29-2011, 07:57 AM

thanks for the advice. im pretty sure its just a lifter tick. and it does seem to be less when its warm.

04-17-2011, 10:07 PM	#1
Braydon Wannabe Elite Explorer West Haven, Utah 93 xlt Join Date: Apr 2011 Posts: 23 Vehicle Specs (Original Poster)	On and off knocking at idle. Hey, I've got a recently acquired 93 explorer xlt and at idle there is a knock that is on for a few seconds then goes completely away for a few seconds, and then back on again. The guy that owned it before said it was a sticky valve, but i dont understand how it could knock one second and be silent the next. Im planning to run some injector cleaner through it the next week sometime. do you think it would fix it?

04-18-2011, 02:24 PM	#2
Sams01XplrSprt Southern Cali Explorer Newport Beach California & Bay Area California 2001 Sport (sold) Join Date: Nov 2004 Posts: 15,633 Vehicle Specs	welcome braydon __________________ 2001 Ford Explorer Sport 4.0 sohc engine. Mods include: dual 40 series flowmasters & high flow k&n air filter & removed silencer & yellow fog lights (sold for $1,800) as of 2-26-12

04-21-2011, 04:33 AM	#4
TonkaRanger3.0 Wannabe Elite Explorer Croswell, Michigan 1993 Ford Ranger XLT 4.0 Join Date: Mar 2010 Posts: 45 Vehicle Specs	i have a '93 4.0 ranger it ticks and goes away i believe its lifter tick caused by a failing lifter __________________ Pony Stomper

04-26-2011, 10:33 PM	#7
BrooklynBay Aerostar Forum Moderator Brooklyn, NY 88 89 93 95 96 Aerostars Join Date: Nov 2005 Posts: 45,681 Vehicle Specs	Welcome to this forum! I've moved your thread into the stock 91-94 section. Check the belt, tensioner, alternator, P/S pump, and water pump. __________________ My list of useful threads. My photo gallery. My product reviews. My list of items for sale. Aerostar owners thread. Aerostar parts work in Explorers, Rangers, and Bronco II thread. History of the Aerostar thread. Aerostar Forum. New Members Forum. Ford/Lincoln/Mercury Forum.

04-26-2011, 11:08 PM	#8
BrianDye Elite Explorer Michigan 04 CV LX Sport Join Date: Mar 2009 Posts: 5,607 Vehicle Specs	Is it a knock or a tick? If its a ticking, its most likely the lifters. VERY common on first gens. __________________ '13 Dodge Charger RT

04-21-2011, 01:35 AM	#3
88redneck Wannabe Elite Explorer san antonio TX 2002 ford explorer sport Join Date: Apr 2011 Posts: 2 Vehicle Specs	My truck does that too i was told that was the a/c

04-21-2011, 05:28 AM	#5
sanseven Wannabe Elite Explorer Join Date: Mar 2011 Posts: 5 Vehicle Specs	not sure, go for some professional

04-21-2011, 12:38 PM	#6
88redneck Wannabe Elite Explorer san antonio TX 2002 ford explorer sport Join Date: Apr 2011 Posts: 2 Vehicle Specs	I agree my last car was a ford zx2 and it had a taping sound and and when i took it in they said it need a valve job new cams and the head need to be shaved. and found out later it had a small hole in the fourth piston, so I traded it and got me a exploder.

04-26-2011, 11:34 PM	#9
Braydon Wannabe Elite Explorer West Haven, Utah 93 xlt Join Date: Apr 2011 Posts: 23 Vehicle Specs (Original Poster)	Its a ticking noise. So I think a valve is sticking. I ran some gumout through it this tank of gas and its at a quarter tank now. I think it helped alittle. I also plan to do seafoam in about a month and a half. __________________ 93 explorer xlt v6 4.0l, towing package, spectre cold air intake, magnaflow muffler, 1600w amp, dual 12" subs in the back

04-27-2011, 12:13 AM	#10
1995 Explorer Wannabe Elite Explorer Western Springs, IL '95 XLT 1997 XLT Join Date: Jan 2011 Posts: 35 Vehicle Specs	I get a little ticking at cold start, however, this problem goes away once the the truck warms up. Are you sure that the IAC valve is not sticking at starting at startup?

04-29-2011, 07:57 AM	#15
Braydon Wannabe Elite Explorer West Haven, Utah 93 xlt Join Date: Apr 2011 Posts: 23 Vehicle Specs (Original Poster)	thanks for the advice. im pretty sure its just a lifter tick. and it does seem to be less when its warm. __________________ 93 explorer xlt v6 4.0l, towing package, spectre cold air intake, magnaflow muffler, 1600w amp, dual 12" subs in the back