94 Ranger running bad

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Sep 4, 2004 | 08:54 PM

johnsmart

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Cross-Country

Joined: Aug 2003

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From: Winnie, Texas

94 Ranger running bad

I have a 2.3 4 cylinder with dual plug head. Did a tune up on truck. Wires were crossed fixed that problem. Cleaned throttle body, and egr valve, changed fuel filter. Truck runs rough and misses when driving. Worse as engine heats up. Bucks and misses under load. Idles a little rough.

Sep 4, 2004 | 10:50 PM

87 XLT

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From: SoCal

Any time it's not running right, the frst thing to do is to take a couple minutes to pull the trouble codes. See the tech info sticky at the top of the forum for pulling EEC-4 trouble codes

Sep 4, 2004 | 11:42 PM

Dealford

Cargo Master

Joined: Aug 2003

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From: Belleville, Ontario

You might also try starting over again. Disconnect the negative battery clamp for 15 minutes, then put it back on. Start the truck & allow it to idle on it's own for 2 minutes to re-learn the idle settings. Then take it out for a drive so it can re-learn that too.
AL.

Sep 5, 2004 | 02:26 AM

stupid red ranger

Mountain Pass

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I had a heck of a time with mine (95 4.0L) after changing the plugs once. I don't know what it was but it would miss while under load. Finally I changed the plugs to Autolite double platinum and the problem immediately went away. I don't remember what plugs I used when it was giving me trouble, but it was some cheap brand.
Your problem just made me think that it may be your plugs, as the same thing happened to me.

Sep 5, 2004 | 03:13 AM

AlfredB1979

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Joined: Jul 2003

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From: Alvin, Texas.

Quote:

Originally Posted by johnsmart

Check out that IAC valve on top of the engine, near the TB unit. That might help the idle and might have a hand in the other issues--CEL won't go iff, either. My IAC was disconnected--broken connector clip--and no CEL went off. Might need to check into a t-stat stuck open or even the coolant temp sensor as well.

If that doesn't work, pull that ECU fuse and reset the settings and pray.

Sep 5, 2004 | 01:09 PM

johnsmart

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From: Winnie, Texas

94 Ranger running bad

87XLT I do not understand what you are talking about as far as the sticky and the trouble codes and where to find them. Please explain!!!!!!!!!!

Sep 5, 2004 | 01:37 PM

87 XLT

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From: SoCal

Quote:

Originally Posted by johnsmart

87XLT I do not understand what you are talking about as far as the sticky and the trouble codes and where to find them. Please explain!!!!!!!!!!

OOPS, I see some changes have been made.
Near the top of the Ranger forum click on "Read first technical information from KenOO" Then click on "Pulling EEC-IV codes. Or call around to Pep boys Autozone etc & see if you can find an Actron CP-9015 code scanner for 30 bucks. It comes with an XLNT instruction manual & is VERY SIMPLE to use.
Heres just one example of how simple it can sometimes be to fix a problem by pulling the codes. When my 87 was stalling off the line in 1st gear, I hooked up the CP-9015 & 2 minutes later it flashed a throttle position sensor trouble code. I took a couple minutes to test the sensor & sure enough it was bad. 30 bucks for a new sensor & a couple minutes to install it & problem solved. So pull those codes & see if the computer can tell you what the problem is.