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1993 Other Plymouth Models Engine lurches when cold

Tiny
JADES976
  • MEMBER
  • 1993 PLYMOUTH
  • 4 CYL
  • FWD
  • MANUAL
  • 175,000 MILES
I have a 1993 Plymouth Laser 1.8L, 4cyl, 5-speed manual transmission. I just replaced the transmission with one from a junkyard. The old transmission had a hole in the case and had lost 5th gear. The car drove well other than the fact that I didn't have 5th gear. Now, the car lurches in first and second gear when it's cold. It also lacks power in first. This only happens when the car is cold. After you drive it for about 5 or 10 miles, the lurching stops and the power is normal. The only things that have changed are the transmission and fluid. I am using the correct type and viscosity for the climate that I am in according to the repair manual. What could be causing this?
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Monday, February 25th, 2008 AT 10:08 AM

7 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
What type and viscosity are you using?
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Monday, February 25th, 2008 AT 10:17 AM
Tiny
JADES976
  • MEMBER
  • 5 POSTS
I think that the brand was Valvoline. I know the viscosity was 80W90.
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Monday, February 25th, 2008 AT 4:01 PM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
I was looking at viscosity earlier in my computer at work and I think you can run a 75/80 weight. I also looked to see if there was a tech bulletin for your concern and I found none. I worked for gm and used to have a bulletin to change from gear oil to transmission fluid but not in this case.
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Monday, February 25th, 2008 AT 4:50 PM
Tiny
JADES976
  • MEMBER
  • 5 POSTS
I was also looking in my book and saw a chart that listed 20w50 oil for the transmission. Could this be the problem? Also, a friend of mine suggested that the distributer cap needs replaced. Could this be the problem? I let the car sit in the driveway this morning to warm up for about 10 min (the temp was about 45 F). I had no problem driving this morning. Thanks for your input.
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Tuesday, February 26th, 2008 AT 5:56 AM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Are you having a problem shifting between gears or is the problem a engine running problem?
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Tuesday, February 26th, 2008 AT 7:08 AM
Tiny
JADES976
  • MEMBER
  • 5 POSTS
I guess it would be more of an engine problem if the oil viscosity is not the problem. The only issue with the transmission is that it grinds between gears sometimes, but I thought that was because the transmission is 14 years old. And it's not a bad grind. Seems like the syncronizers in this transmission are a little old.
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Tuesday, February 26th, 2008 AT 7:27 AM
Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
I would first try switching the oil to the 20 50 to alleviate the grind noise. Then the tune up might have something to do with the hesitation.
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Tuesday, February 26th, 2008 AT 7:32 AM

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