How do you tighten up timing belt on a1994 Isuzu Rodeo V6 engine. I think the hydraulic tension pulley was loosened (but re-tightened..& the other tension pulley as well). But my belt is not tight.

Asked by Dec 14, 2014 at 09:11 PM about the 1994 Isuzu Rodeo 4 Dr S 4WD SUV

Question type: Maintenance & Repair

1 Answer

It seems that certain 1994 DOHC engines don't accept the "new" belts and pulleys well. Early in 94 they had a tensioner pulley with a eccentric hole in it. To tighten you would simply set the belt on the pulleys correctly then release the hydraulic tensioner by pulling out the pin (compress the plunger on a vice, insert a pin in the hole install the piston assy ,check the positions of the pulleys, then release he pin) If the belt was loose you could take off the piston assy then turn the eccentric tensioner bearing to tighten. Those parts are not available. They went to a two piece system with no adjustment. You put the new one piece tensioner pulley on, Then after setting the belt and other pulleys correctly, install the hydraulic tensioner piston and pull the pin. On most 94's this works fine with the tensioner contacting the belt with sufficient force to tighten it. But on mine with even the factory belts the piston (even the factory one) reaches full extension before the belt is tight. Result.tick tick tick....... There should only be about a 1/4 inch gap between the face of the tensioner and the face of the piston assembly. If more tick tick tick. There is no other adjustment. I think everyone economized they now make the parts with the minimum material and things got smaller, belts got thinner, etc and people like us were lost in the tolerance build up. So I machined the hydraulic piston assembly to elongate the mounting holes thus moving the entire assembly about 1/4 inch towards the tensioner pulley assembly. I left about 1/16 inch material on the "away" side of the holes. Some locktight and JB weld to add support to the part and it works great. no ticking at all and no belt flap either. A thick belt would do the trick too as would a bearing on the tensioner pulley that was 1/4 - 1/2 inch greater in diameter. I couldn't find one. Don't ask for a photo. This is not coming apart for another 60K miles which at the rate I drive, is never.

Your Answer

Add photo

Related Questions

Search Isuzu Rodeo Questions

Isuzu Rodeo Experts

#1 tas33
tas33
Reputation 380
#2 dandyoun
dandyoun
Reputation 340
#3 yz250chick
yz250chick
Reputation 300
View All

Related Models For Sale

Used Isuzu Trooper
92 listings starting at $3,350
Used Honda Accord
946 Great Deals out of 77,735 listings starting at $899
Used Toyota 4Runner
260 Great Deals out of 19,017 listings starting at $2,500
Used Nissan Pathfinder
282 Great Deals out of 22,987 listings starting at $1,499
Used Honda Passport
69 listings starting at $2,650
Used Ford F-150
2,064 Great Deals out of 207,332 listings starting at $1,499
Used Isuzu Amigo
8 listings
Used Ford Explorer
926 Great Deals out of 70,249 listings starting at $997
Used Toyota Tacoma
473 Great Deals out of 41,586 listings starting at $1,995

Used Cars For Sale

2003 Isuzu Rodeo For Sale
24 listings starting at $1,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.