How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Tim's Auto Repair Your Own Question
Tim's Auto Repair
Tim's Auto Repair, mechanic
Category: Chevy
Satisfied Customers: 15926
Experience:  Have owned a repair shop for 25 yrs.
Type Your Chevy Question Here...
Tim's Auto Repair is online now
A new question is answered every 9 seconds

Chevrolet Suburban 1500 Z71: Hey john have a issue I have yet

Customer Question

Hey john have a issue I have yet to solve. I have a 1998 Chevy suburban 5.7 vortec bought it used had a knock in bottomed so pulled motor rebuilt the bottom end only 84k on truck. It had a oil leak on rear of intake which the owner before probably ran it lower which got the rod bearings. Anyways put new intake gaskets on it put it in the truck cranks right up ideals great but if you are stopped and hit the gas to take off it goes to about 3k then starts busting up let of the gas some it will do alittle better but not right. Also if you put in neutral and rev it will go to 2500-3000 then bust up will not go's not like a rev limit like a miss or lose of gas. But it'll you rev slow past 3 then it will go all the way up. Checked and changed maf cats. Plugs wires cap button erg valve fuel pressure is good at rail no check engine light. What else could cause this I know Chevy had a issue with the spider injection but figured that would throw a misfire code. Maybe tps sensor coolent sensor and oil sensor seem to be working fine too. Any help would be great thanks. Jesse
Submitted: 2 years ago.
Category: Chevy
Expert:  Tim's Auto Repair replied 2 years ago.
Hi, My name is ***** ***** for the delay.I will do my best to assist youyou say fuelpressure is good,how much psi do you have when it is breaking up?