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RPM Surge??

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  #1  
Old 10-25-2006, 04:29 PM
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Default RPM Surge??

I have a 1999 Dodge Ram Quad Cab 4 x 4 with a 5.9L. When I am cruising at speed the RMP surges 300-500 RPMs for no apart reason. This surge occures with the cruise control engaged and when I am driving normally. The truck accelerates and idles with no issues. I had the rear diff speed sensor changed by a licensed mechanic about 2 months ago, but the RPM surge just started this week. Does anyone have an idea what I can check to fix this?

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Old 10-25-2006, 04:32 PM
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Default RE: RPM Surge??

99% chance that your Throttle Position Sensor is bad. You can get one at most parts stores for roughly $35. You can change it yourself in 5-10 minutes.
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Old 10-25-2006, 04:41 PM
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Default RE: RPM Surge??

Thanks for the reply.

If it is the throttle position sensor would it show up as a code? No codes are registering. Thanks again
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Old 10-25-2006, 04:54 PM
steve05ram360 steve05ram360 is offline
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Default RE: RPM Surge??

no it wont. the sensor starts getting noisey and the pcm thinks it needs to un-lock the torque converter so thats what it does. I have never heard of any of these failures throwing a code.
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Old 10-25-2006, 05:47 PM
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Default RE: RPM Surge??

To add to what Steve said - I had the surge problem almost from the day I got my truck new. I had the dealer check the tranny out several times because I just knew something wasn't right. The dealer techs could never find the problem., even after rebuilding my tranny twice under warranty after it burnt up. I found out about the TPS on here - and it fixed the problem. I let the dealer know what the problem was - they had no clue because their computer diagnostics didn't tell them.....
I firmly believe that the bad tps on mine is what caused my tranny to burn up twice - due to excessive shifting and converter lock/unlocking
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Old 10-25-2006, 06:27 PM
BryanRachko BryanRachko is offline
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Default RE: RPM Surge??

Can someone help here.... I just received Code 1763 on the way home. I searched for it but can not seem to find out what the issue is or where to start? Can anyone help? I just had the throttle body cleaned, new plugs and wires done on the truck last week. Any ideas. The truck is starting to lunge and surge. Thank you.
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Old 10-25-2006, 07:22 PM
steve05ram360 steve05ram360 is offline
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Default RE: RPM Surge??

code 1763 does not exist in the list I have, maybe someone else can chime in.

Racin, do you remember the thread about the wiring issue that was causing a similar problem that was in the tranny? I've been looking for that thread and cant seem to find it. did you ever see it (and save the link)?
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Old 10-25-2006, 08:24 PM
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Default RE: RPM Surge??

OBDII Code P1763 - Governor Pressure Sensor Volts Too High (Chrysler, Jeep)

Now ... what's THAT mean?
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Old 10-26-2006, 04:48 AM
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Default RE: RPM Surge??

Quote:
ORIGINAL: steve05ram360

code 1763 does not exist in the list I have, maybe someone else can chime in.

Racin, do you remember the thread about the wiring issue that was causing a similar problem that was in the tranny? I've been looking for that thread and cant seem to find it. did you ever see it (and save the link)?
Yeah, Steve. I will find it in the next 24 hours or so and pm it to ya......It's on my home 'puter - I'm on the work 'puter now.....
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Old 10-26-2006, 02:30 PM
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Default RE: RPM Surge??

it means a the sensor in the tranny has gone bad... take it to a tranny shop and have them swap it out and do a servicing on it. there is another sensor in there that also goes bad, i'd have them swap that one out while they are in there. I had a tranny problem that related to that sensor, never thru a code and it turned out to be one of the 2 sensors inthe tranny. fixed it and never had a problem again.
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Old 10-26-2006, 02:30 PM
 
 
 
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1500, 1763, 2006, code, dodge, governor, obd2, p1763, problem, ram, rpm, sensor, surge, truck

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