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Car Forum / Chevrolet / Chevrolet Trucks / June 2008'89 Chevy Blazer 4.3L problems
symtoms; Extreme hesitation from stand still. the more I push the slower it goes, lift up from full throttle and engine starts to "catch up" slowly. Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, iac valve, rebuilt kit for TBI, map sensor, o2 sensor... At one time this was a nice truck, please any help? > symtoms; Extreme hesitation from stand still. the more I push the > slower it goes, lift up from full throttle > and engine starts to "catch up" slowly. > Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... > At one time this was a nice truck, please any help? Well I would start with a simple compression test, also check the timing. Check the exhaust back-pressure as well. What is your fuel pressure?  SignatureSteve W. Near Cooperstown, New York Do you have one of those foam air filters? > symtoms; Extreme hesitation from stand still. the more I push the > slower it goes, lift up from full throttle > and engine starts to "catch up" slowly. > Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... > At one time this was a nice truck, please any help? > Do you have one of those foam air filters? Why would that matter? > > symtoms; Extreme hesitation from stand still. the more I push the > > slower it goes, lift up from full throttle > > and engine starts to "catch up" slowly. > > Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, > > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... > > At one time this was a nice truck, please any help? Well, if you do have one, and you just cleaned it, it may have too much oil in it. That is where I was going. >> Do you have one of those foam air filters? > [quoted text clipped - 6 lines] >> > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... >> > At one time this was a nice truck, please any help? > Well, if you do have one, and you just cleaned it, it may have too much oil > in it. [quoted text clipped - 5 lines] > > > Why would that matter? What would excess oil on an oiled type air filter affect specifically on the OP's vehicle? Toyota MDT in MO On Jun 14, 9:49 am, "Bill" <barg...@bellsouth.net> wrote: > Well, if you do have one, and you just cleaned it, it may have too > much oil [quoted text clipped - 11 lines] > > > Why would that matter? What would excess oil on an oiled type air filter affect specifically on the OP's vehicle? Toyota MDT in MO He's thinking it's restricting the flow of air, choking the engine, but that would clear its self up as the excesse oil was sucked into the engine. That model is throttle body, and as such doesnt have a mass air flow sensor tyo get messed up by oiled filters Whitelightning On Jun 16, 2:02 pm, "Whitelightning" <white.lightni...@verizon.net> wrote: > On Jun 14, 9:49 am, "Bill" <barg...@bellsouth.net> wrote: > [quoted text clipped - 22 lines] > but that would clear its > self up as the excesse oil was sucked into the engine. He *might* be thinking that :-) > That model is > throttle body, and > as such doesnt have a mass air flow sensor tyo get messed up by oiled > filters Bingo! It was a leading question, not one designed to learn anything automotive. Toyota MDT in MO Cat converter clogged. plates inside broken. > Do you have one of those foam air filters? > [quoted text clipped - 4 lines] >> iac valve, rebuilt kit for TBI, map sensor, o2 sensor... >> At one time this was a nice truck, please any help? In article <371b35c3-1af6-44cb-a349-044e503d3cb9@g16g2000pri.googlegroups.com>, > symtoms; Extreme hesitation from stand still. the more I push the > slower it goes, lift up from full throttle > and engine starts to "catch up" slowly. > Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... > At one time this was a nice truck, please any help? Check the fuel pressure. Check the exhaust back pressure. > symtoms; Extreme hesitation from stand still. the more I push the > slower it goes, lift up from full throttle > and engine starts to "catch up" slowly. > Steps taken to date; plugs, wires, fuel filter, ignition mod., tps, > iac valve, rebuilt kit for TBI, map sensor, o2 sensor... > At one time this was a nice truck, please any help? Check the EGR valve. |
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