2.9 jerks on freeway - Page 3

Zachalanche · 06-27-2011, 09:57 AM

the air temp sensor tested ok, so I cleaned it up and did a little repair work on the connector. the female side of the contacts appeard to be a bit streched out so the sensor might have been losing connection intermittently. I pryed everything back into shape with a small screw driver and apllied some dyelectric grease before plugging the sensor back in, and haven't had a problem since (roughly a week has passed).

If the problem returns I'll keep posting, but hopefully I have it fixed. and hopefully this info helps some of you that might have similar issues.

**Beef52751** · 07-14-2011, 06:33 PM

is it still running alright???

Zachalanche · 07-15-2011, 03:15 PM

running perfect since my last post.

fordfan · 07-18-2011, 05:24 PM

I had the same thing happen twice in my '88 Ranger 2.9.
First time the fuel pump went about 6 weeks later, the second it was my alternator diodes were fried. As I understand it, it was messing with the computer by allowing AC for periods, rather than DC? Anyways, on a hunch I disconnected the ground while while idling and my truck died. Replaced it and two years later still have no troubles!
Good Luck!

dirtybird62 · 10-25-2011, 12:15 PM

Did you ever find the cure for the "Jerking" ? Was it the coil ? My 87 has been giving me fits doing it. I'm afraid to take it out of town lately.........thanks

Marky48170 · 10-26-2011, 04:03 PM

Had the same problem, First the guy I bought my 1988 ranger form bypassed the inertia switch and made a bad connetion with the 2 wires. Then when that was fixed it started again, mainly when I was on the expressway. It would totaly cut out like lack of fuel, sometimes I could feather the gas pedal and it would keep it going. other times I would push in the clutch to try and restart it while moving and the starter would grind. Well I replace the electric fuel pump & sending untit and haven't had a problem since. If the fuel pump gets to hot it will cut out or if the fuel gets to low and have to work harder it could cut out also. Does your idiot lights come on when it cuts out???

dirtybird62 · 10-31-2011, 06:19 PM

Did you ever get the jerking fixed ? My 87 is doing it less after cleaning and re-setting computer, but still does it whenit warms up. I'm afraid to take it out of town or highway speeds.........

fordfan · 11-11-2011, 06:07 PM

Y'know, I had EXACTLY the same problem in my Ranger on the highway, so brief I almsot thought it was my imagination. Traded to a Bronco2 for family size and you know what else? I moved the alternator over because I had just redone the brushes. After a couple of weeks the Bronco 2 did the same thing! When I ran the engine and disconnected the battery, my truck died- bad diodes. I put in a whole new alternator and have had two years with no recurrence.....my poor Ranger got crushed at the wreckers for that oversight

06-27-2011, 09:57 AM	#25
Zachalanche Member Join Date: Aug 2008 Year: 1989 Make: Ford Model: Ranger Engine: 2.9 Class: 4X4 Used For: Off road / daily driver / Haulin Dirt Bikes Posts: 214 Rep Power: 10 iTrader: (0)	the air temp sensor tested ok, so I cleaned it up and did a little repair work on the connector. the female side of the contacts appeard to be a bit streched out so the sensor might have been losing connection intermittently. I pryed everything back into shape with a small screw driver and apllied some dyelectric grease before plugging the sensor back in, and haven't had a problem since (roughly a week has passed). If the problem returns I'll keep posting, but hopefully I have it fixed. and hopefully this info helps some of you that might have similar issues. __________________ http://www.therangerstation.com/foru...ad.php?t=66814
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07-14-2011, 06:33 PM	#26
Beef52751 I Wanna Go Fast!!!! Join Date: Aug 2007 Location: Eastern Iowa Year: 86/03 Make: Ford Model: Ranger/F250 Engine: 2.9/6.0 Class: 4x4s Used For: Daily Driver/Beater/Toy Posts: 1,703 Rep Power: 16 iTrader: (9)	is it still running alright??? __________________ 86 Ranger 4X4 D28 8.8 BW1350M, 33s Build Thread WTB: 6'' Skyjacker Brackets and EB Coil Springs PM ME
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07-15-2011, 03:15 PM	#27
Zachalanche Member Join Date: Aug 2008 Year: 1989 Make: Ford Model: Ranger Engine: 2.9 Class: 4X4 Used For: Off road / daily driver / Haulin Dirt Bikes Posts: 214 Rep Power: 10 iTrader: (0)	running perfect since my last post. __________________ http://www.therangerstation.com/foru...ad.php?t=66814
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07-18-2011, 05:24 PM	#28
fordfan Junior Member Join Date: Jan 2011 Location: Abbotsford,BC Year: 1989 Make: Ford Model: Bronco 2 2.9L Engine: 2.9L Class: 4x4 Used For: DD Posts: 32 Rep Power: 5 iTrader: (0)	I had the same thing happen twice in my '88 Ranger 2.9. First time the fuel pump went about 6 weeks later, the second it was my alternator diodes were fried. As I understand it, it was messing with the computer by allowing AC for periods, rather than DC? Anyways, on a hunch I disconnected the ground while while idling and my truck died. Replaced it and two years later still have no troubles! Good Luck!
	Tweet

10-25-2011, 12:15 PM	#29
dirtybird62 Junior Member Join Date: Feb 2009 Location: Foresthill,CA Year: 1987 Make: Ford Model: Ranger 4x4 Supercab Engine: 2.9 Class: 4x4 Used For: Camping,Hunting,Firewood, Hay Posts: 31 Rep Power: 9 iTrader: (0)	Did you ever find the cure for the "Jerking" ? Was it the coil ? My 87 has been giving me fits doing it. I'm afraid to take it out of town lately.........thanks
	Tweet

10-26-2011, 04:03 PM	#30
Marky48170 New Member Join Date: Dec 2010 Location: Michigan Year: 1988 Make: Ford Model: Ranger Engine: 2.9 liter Class: 2WD Used For: daly driver Posts: 9 Rep Power: 0 iTrader: (0)	Had the same problem, First the guy I bought my 1988 ranger form bypassed the inertia switch and made a bad connetion with the 2 wires. Then when that was fixed it started again, mainly when I was on the expressway. It would totaly cut out like lack of fuel, sometimes I could feather the gas pedal and it would keep it going. other times I would push in the clutch to try and restart it while moving and the starter would grind. Well I replace the electric fuel pump & sending untit and haven't had a problem since. If the fuel pump gets to hot it will cut out or if the fuel gets to low and have to work harder it could cut out also. Does your idiot lights come on when it cuts out???
	Tweet

10-31-2011, 06:19 PM	#31
dirtybird62 Junior Member Join Date: Feb 2009 Location: Foresthill,CA Year: 1987 Make: Ford Model: Ranger 4x4 Supercab Engine: 2.9 Class: 4x4 Used For: Camping,Hunting,Firewood, Hay Posts: 31 Rep Power: 9 iTrader: (0)	Did you ever get the jerking fixed ? My 87 is doing it less after cleaning and re-setting computer, but still does it whenit warms up. I'm afraid to take it out of town or highway speeds......... __________________ "Never approach a Bull from the front, a Horse from the rear, or a Fool from any direction"
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11-11-2011, 06:07 PM	#32
fordfan Junior Member Join Date: Jan 2011 Location: Abbotsford,BC Year: 1989 Make: Ford Model: Bronco 2 2.9L Engine: 2.9L Class: 4x4 Used For: DD Posts: 32 Rep Power: 5 iTrader: (0)	Y'know, I had EXACTLY the same problem in my Ranger on the highway, so brief I almsot thought it was my imagination. Traded to a Bronco2 for family size and you know what else? I moved the alternator over because I had just redone the brushes. After a couple of weeks the Bronco 2 did the same thing! When I ran the engine and disconnected the battery, my truck died- bad diodes. I put in a whole new alternator and have had two years with no recurrence.....my poor Ranger got crushed at the wreckers for that oversight
	Tweet

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