Question about Dodge Ram 1500
I have a 1998 Dodge Ram 1500. about a month ago I was driving down the interstate at about 70mph. The OD off light came on and would not go off. The Trans temp light came on. Everything seemed fine, no noises etc. no engine overheating. I shut truck off and re started and the lights trans temp light went off. The OD off light went off as well. I didnt drive it after that until a couple of days ago. I drove it a few miles around town and it drove fine, until I left my last destination. I shifted it into reverse and it would not move. There was a grinding/clunking noise going on. I had to push it backwards out of the parking spot. It went into forward gears and drove home just fine without noises. Its just the reverse problem. This truck is a V8 318.
Sounds like you blew out your reverse belt/gear in the transmission. Probably going to need a transmission rebuild/replacement.
Posted on Feb 08, 2014
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Posted on Jan 02, 2017
the gears in transmission are going out..aka slipping.....check out pavementpounders.com or gotmud.com they cn help you out better on there than on here
Posted on Jan 04, 2009
Before guessing at transmission problems, check the fluid level (car warmed up, engine running in Park on level ground) and have the PCM scanned for trouble codes FIRST.
Secondly, put a line pressure gauge (or visit a local trans shop) on the pressure test port and go for a drive to verify proper line pressure. Base pressure at idle in P,N,OD should be around 70psi and around 140psi in R. Max line pressure should be at least 190psi at WOT in 1st or 2nd, 225psi is optimum. If base pressure is low, trans or pump is worn out. If max pressure is low, check EPC solenoid. If reverse is slow to engage, and line pressure does not come up to at least 130psi in reverse, replace the boost valve with a Transgo 0.500" boost valve (easy fix in pan).
Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission additive or other seal restorer product. May also have worn boost valve (can replace in the pan).
Soft shifting, gradual performance degradation: Poor line pressure rise due to leaking boost valve, clogged EPC filter screen, failing EPC solenoid, or worst case: leaky seals throughout. Transgo HD2-C kit fixes first two without removing trans. Seal restorer may fix last problem, but probably R&R. Also try a transmission flush with BG brand products (Firestone stocks it).
No movement in any gear: pump failure, or total loss of fluid. R&R, or refill pan and find the leak. If out of fluid, avoid running the engine until the trans is refilled to avoid pump damage. To check for pump failure, check fluid level with the engine off, then start the engine and recheck fluid level. If level does not go down when engine is running, the pump is broken.
1-2 or 2-3 shift is slow/soft above part throttle: Trans is on its way out. R&R
Good luck and start with checking your transmission fluid level. Thank you for using Fixya
Posted on Mar 16, 2010
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