1991 Isuzu 4X4 Pickup 3.1 V6 won't warm start plus shudder in low
2 problems really... 1. won't start when warm or very humid. sometimes stalls when idling and same thing - won't restart. 2. when releasing clutch, as it gains speed, in 1st and 2nd the truck shudders, but don't think it is the clutch. with clutch completely disengaged in 1st and then applying gas it shudders, unless i go really easy. it also shudders when decelerating in 1st with clutch disengaged. will NOT climb steep hill slowly without major shuddering, except in low 4x4. 267,000 (yes) miles on engine, replaced plugs, wires, dist cap, rotor, coil, and used injector cleaner which all helped, but only temporarily. runs great when it runs, except misfiring every once in a while while "lugging" (unintentional)
Your flywheel sound like it has hot spots on it, making the clutch chatter. You might need to pull the flywheel off and get it re-surface. This is like turning your rotor, or brake drum. If you pull the flywheel, you will see discolor spots on your flywheel. This is called hot spots, and will make the clutch slip.
On the other problem, have you changed to fuel filter and fuel pump. It almost sound like your running out of fuel????
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hello jaymcintosh: My name is Roger and I will help you.The fire order is 1-2-3-4-5-6. I also attached a picture to help you. Should you need further help please just ask. Please rate the answer you received. Thank You using Fix Ya. Roger
my experiences with toyota 4runners is that the ignition will do this when it is going bad. another problem that could cause this is a faulty injector that when it heats up it will short out.Hope this helps
still working on my identical problem with 1983 toyota truck, started not shifting into odints OD switch lite is on. Figured out thermostat sometimes is the problem as the engine isnt warming up enuff. changed (bad frozen) thermo and hose, no change.
Then figured viscious clutch was frozen. Found fan rotated a blade or two when cold, but was not freewheeling or easy. Started truck cold, and noted lot of air movement from fan which seemed more when revved up. couldnt stall fan with rolled up newspaper. after warming up for less than 5 minutes, noted change in engine speed, and much less air movement from fan. Now could stall fan with rolled up newspaper. However, fan was now easy to move by hand, and easily rotated about half way.
Now suspecting one of the solinoids, and trying to dope that out....hope this helps