Question about 1989 Isuzu Pickup 2WD

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Is it the transmission or the clutch?

In my 89 isuzu I only have 4th gear and reverse. I was told it was the transmission.

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Not the clutch... and maybe not the transmission internals...

Since you mentioned clutch, I assume you have a manual transmission and not an automatic transmission.

In a manual transmission, Reverse is the same gear as first gear, it just runs backwards...
... you may not have fourth gear ... sure?

It may be the linkage immediately on the outside of the transmission.
Look to see if any metal bars are "hsnging down from the bottom of the car. If so, re-connect them using a cotter pin.
Also, spray WD40 or Liquid Wrench on the linkage to loosen them up.

It may be the lube in the transmission. There is a plug on the side of the tranny. Open the plug and feel if there is lube inside. If not, then
find the plate on the side of the transmission and remove it (place a pan under it). Spray WD40 / Liquid Wrench to loosen the gears and levers in the tranny. Close it up and add lubricant (lube).

If by some chance, it is an automatic transmission:

1. Check the fluid level, just in case.
2. It may be the vacuum "modulator" ($20) or a leaking / disconnected vacuum hose anywhere under the hood or at the modulator on the side of the transmission.

Post more info if possible, or comment ...
Thanks..




Posted on Sep 11, 2009

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