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  #1  
Old 02-02-2012, 12:06 PM
AllBlackBimmer AllBlackBimmer is offline
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Exclamation First post - need help!!

New memeber, first post. Not sure where to put this, so I put it in the general section.

I bought a '93 ranger, 5spd, 125k, 4x4, ext cab for $1500 for a winter
beater.


When I drive the truck, it seems to "sputter" at low RPMs in 1st and 2nd gear. Low RPMs as less than 2k.

The truck wants to "buck" and "sputter" but it seems as soon as I reach a higher RPM it goes away... (until I shift into 2nd and it does it again)

I have always owned manual cars (5 total now) and seems this truck literally has NO low end torque or power? It drives OK, except for the sputtering. Seems once the engine warms up, it doesn't do it nearly as bad.

I have only owned for 3 months and havent replaced a thing yet. And as far as I know, it hasnt had much of anything replaced recently. Now, Ive read it could be the wires, plugs, coil pack, etc...

I am first going to try a fuel system cleaner - I just need to run my truck to get it down to almost an empty tank to add the cleaner.... Should I do this on consecutive tanks of gas or every other?


I am looking for any advice - I am big into cars but know next to NOTHING about trucks - this is my first truck. I also don't really work on my own vehicles but am willing to if able.

This truck only has 125k on it, and I know these things can run upwards of 250k before they die - what do I need to do to keep my truck in good working order over the next 2-3 years?


EDIT: MY TRUCK SEEMS TO BE RUNNING RICH, MY EXHAUST SMELLS VERY RICH DURING OR AFTER DRIVING.

Last edited by AllBlackBimmer; 02-03-2012 at 05:32 AM.
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  #2  
Old 02-02-2012, 12:08 PM
mazdab2300 mazdab2300 is offline
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Default Re: First post - need help!!

try reving it up higher. my 4 speed with overdrive does the same thing.
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  #3  
Old 02-02-2012, 12:09 PM
reconjb reconjb is offline
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Default Re: First post - need help!!

my bet would be spark plugs as this tends to be my problem when they need changing
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  #4  
Old 02-02-2012, 12:40 PM
AllBlackBimmer AllBlackBimmer is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by mazdab2300 View Post
try reving it up higher. my 4 speed with overdrive does the same thing.


You would think that... but

But I have owned ALL manual trans. cars, and I KNOW manual trucks drive about 100x different than cars, but it just doesn't "feel" right.

I give it a little more gas, and it seems to "pull it out" of the sputtering a LITTLE, but does not make it go away.



I am going to try new plugs next I believe, after I try to fuel system cleaner.
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  #5  
Old 02-02-2012, 02:24 PM
COL COL is offline
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Default Re: First post - need help!!

new plugs, wires, and coil along with an air cleaner helped my truck A LOT! It runs perfect now and was easy to do!
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  #6  
Old 02-02-2012, 02:31 PM
NewSplash NewSplash is offline
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Default Re: First post - need help!!

I'd like to double down and place my bet that your PCM (Power Control Module) has gone bad.
It is located under the hood, driver side of master cylinder, mounted on firewall.

This is from personal experience on my 1994 Ford Ranger 4.0L 5 speed back in 2003.
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  #7  
Old 02-02-2012, 02:36 PM
RangerEdgeWhite RangerEdgeWhite is offline
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Default Re: First post - need help!!

clean the IAC
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  #8  
Old 02-02-2012, 03:43 PM
Skylark65 Skylark65 is offline
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Default Re: First post - need help!!

plugs & wires, mabe a fuel filter?
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  #9  
Old 02-02-2012, 03:58 PM
NewSplash NewSplash is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by RangerEdgeWhite View Post
clean the IAC
Per Ford dealer manual, do not clean IAC with any spray or cleaner.
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  #10  
Old 02-03-2012, 05:31 AM
AllBlackBimmer AllBlackBimmer is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by NewSplash View Post
I'd like to double down and place my bet that your PCM (Power Control Module) has gone bad.
It is located under the hood, driver side of master cylinder, mounted on firewall.

This is from personal experience on my 1994 Ford Ranger 4.0L 5 speed back in 2003.

What is that? ... or what does it do?

----------

Also, forgot to mention... My truck is also running "rich" ... my exhaust smells rich when I get a whiff of it...

related problems?
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  #11  
Old 02-03-2012, 06:24 AM
dnewman633 dnewman633 is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by NewSplash View Post
I'd like to double down and place my bet that your PCM (Power Control Module) has gone bad.
It is located under the hood, driver side of master cylinder, mounted on firewall.

This is from personal experience on my 1994 Ford Ranger 4.0L 5 speed back in 2003.
Unless the check engine light is on and has multiple codes ( like more than 10 active (not pending) codes) I highly doubt this is the problem. Change the fuel filter and run a bottle of Lucas fuel clener through it . If that does not help seafoam the engine and change the air filter and sparkplugs.
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  #12  
Old 02-03-2012, 07:36 AM
AllBlackBimmer AllBlackBimmer is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by dnewman633 View Post
Unless the check engine light is on and has multiple codes ( like more than 10 active (not pending) codes) I highly doubt this is the problem. Change the fuel filter and run a bottle of Lucas fuel clener through it . If that does not help seafoam the engine and change the air filter and sparkplugs.

No check engine light. Don't know about codes as I haven't had my truck scanned... I know they can do this for you at like Autozone or something? .. do they charge?

I plan on driving it A LOT this weekend to run the gas down and add the fuel system cleaner. Depending how that helps or doesnt help, I am going to change the plugs out - Anything wrong with usually cheap run of the mill plugs? Or should I get something special for the higher mileage?



What does "seafoaming" the engine require you to do? Is it as simple as dumping sometihng into the oil or gas? Or do you have to physically take things apart and clean them?

Thanks for all the help guys!
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  #13  
Old 02-03-2012, 08:03 AM
Skylark65 Skylark65 is offline
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Default Re: First post - need help!!

Quote:
Originally Posted by AllBlackBimmer View Post
No check engine light. Don't know about codes as I haven't had my truck scanned... I know they can do this for you at like Autozone or something? .. do they charge?

I plan on driving it A LOT this weekend to run the gas down and add the fuel system cleaner. Depending how that helps or doesnt help, I am going to change the plugs out - Anything wrong with usually cheap run of the mill plugs? Or should I get something special for the higher mileage?



What does "seafoaming" the engine require you to do? Is it as simple as dumping sometihng into the oil or gas? Or do you have to physically take things apart and clean them?

Thanks for all the help guys!
if the truck has no check engine lights on then it's not throwing any codes. i'm not sure if you can have it checked at autozone or advanced auto anyway, if the trucks a '93 then it should be an OBDI vehicle, and i THINK (could be wrong) that those places are only equiped to read an OBDII ('96.5- up) vehicle. i remember reading somewhre though that on OBDI vehicles you can jump the diagnostic port with a wire, and tell what code it might be throwing by how many times the CEL flashes. you may want to look into a more detailed "how to" for how to do that, scince i never have.

and for the plugs, autolites are fine plugs, inexpensive and reliable. i wouldin't get anything fancy untill you've got the problem with the truck solved.
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  #14  
Old 02-03-2012, 12:46 PM
AllBlackBimmer AllBlackBimmer is offline
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Default Re: First post - need help!!

Will the above suggestions also help take care of the exhaust smelling rich? - aka the engine running rich.

...Or are these 2 completely seperete issues or could there be a link?
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  #15  
Old 02-04-2012, 08:33 AM
NewSplash NewSplash is offline
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Default Re: First post - need help!!

Dan, obd1 does not depend on check engine lights. They are practically irrelevant to your problem. I know your motor very well inside and out. I can't guarantee without seeing it, but I would replace the pcm. Check engine light codes are very different on obd1. They are only MIL for the split second that one specific sensor reads with a voltage out of spec. I would have described the problem exactly as you have described yours. Good luck

----------

Rich fuel is caused by a bad mass air meter. I have the dealer books if you need the voltage ranges to test your MAF .
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#1: 1994 Ranger Splash Reg Cab 4x2, 4.0L, 4-Speed Auto w/OD, Brilliant Blue (1,442 ORIGINAL MILES - Literally Like Factory New)
#2: 1994 Ranger Splash Ext Cab 4x2, 4.0L, V6, Manual, PPG Red (undergoing frame-off restoration)
#3: 1993 Ranger Splash Reg Cab 4x2, 2.3L, Manual, Blue
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