TBI Runs Lean & Hesitates When U Accelerate
#1
TBI Runs Lean & Hesitates When U Accelerate
My 95 Suburban is running lean and has hardly any power when I push on the gas, it hesitates and also dies sometimes when I am stopped at lights. It always starts up and it idles fine in park and neutral, but when it is in drive and reverse it tries to die if you don't give it gas it usually will die. I have replaced the map sensor, iac valve, tps, fuel filter, O2 sensor, I have also checked all of my vacuum lines and they are good, the Egr valve is only a year old same with the plugs, wires, distributor cap and rotor.
Please Help.
Please Help.
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#8
Super Moderator
Professional Mechanic
Professional Mechanic
Fuel pressure spec for that truck is 9-13 psi. It is a possible cause for the problem but not likely. Those pumps pretty much died completly since the pressure is already low, it is hard to go from almost no pressure to less. There is no fuel pressure test port you must tie into the lines and have a gauge that can read accurate at that low pressure. A couple of psi will make a difference using a cheap gauge
#9
Super Moderator
Professional Mechanic
Professional Mechanic
It could have a bad ignition coil or pick up coil. Still more likely than fuel pump.Exhuast could smell funny because it is not running correctly