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Help with accelleration
I'm a yutz when it comes to automotive repair so please bare with me.
95 MX with 95K. It's had pretty good maint during it's life. Turns over with less than one rev of the engine. However, after driving 4-5 miles, it spits and sputters. Keeping the peddle to the floor, it eventually catches for a bit and then back to spitting etc. Plugs, air, fuel are perfect. A neighbor backyard mech. suggested TPS? Throttle Positioning Sensor? Does this make sense to the experienced owners? Any other areas to look into? Thanks in advance. Bill McDonald |
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#2
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Help with accelleration
williemcd wrote:
> I'm a yutz when it comes to automotive repair so please bare with me. > 95 MX with 95K. It's had pretty good maint during it's life. Turns > over with less than one rev of the engine. However, after driving 4-5 > miles, it spits and sputters. Keeping the peddle to the floor, it > eventually catches for a bit and then back to spitting etc. Plugs, > air, fuel are perfect. A neighbor backyard mech. suggested TPS? > Throttle Positioning Sensor? Does this make sense to the experienced > owners? Any other areas to look into? > Thanks in advance. Bill McDonald Easiest thing first: has the fuel filter been replaced? After that the throttle position sensor seems like a good thing to check. Mine went wonky on my '91 and caused some drivability problems although they weren't as bad as what you describe. -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com |
#3
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Help with accelleration
John McGaw > wrote:
> williemcd wrote: >> I'm a yutz when it comes to automotive repair so please bare with >> me. 95 MX with 95K. It's had pretty good maint during it's life. >> Turns over with less than one rev of the engine. However, after >> driving 4-5 miles, it spits and sputters. Keeping the peddle to >> the floor, it eventually catches for a bit and then back to >> spitting etc. Plugs, air, fuel are perfect. A neighbor backyard >> mech. suggested TPS? Throttle Positioning Sensor? Does this make >> sense to the experienced owners? Any other areas to look into? >> Thanks in advance. Bill McDonald > > Easiest thing first: has the fuel filter been replaced? After that > the throttle position sensor seems like a good thing to check. > Mine went wonky on my '91 and caused some drivability problems > although they weren't as bad as what you describe. The OP should check the gas cap vent, if air can't enter the system it'll start starving for fuel after a few miles.... Just take the cap off and drive, he'll get a check engine light but ignore it. -- XS11E, Killing all posts from Google Groups The Usenet Improvement Project: http://improve-usenet.org |
#4
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Help with accelleration
If you don't find fuel issues, I'm thinking that it's plug wires. OP
mentions good plugs but no mention of replacing wires. Miata plug wires are notorious for their short life. OEM's at 95k (and 12 yrs) ought to be pretty much shot. Let us know, Chris 99BBB "XS11E" > wrote in message . 236... > John McGaw > wrote: > >> williemcd wrote: >>> I'm a yutz when it comes to automotive repair so please bare with >>> me. 95 MX with 95K. It's had pretty good maint during it's life. >>> Turns over with less than one rev of the engine. However, after >>> driving 4-5 miles, it spits and sputters. Keeping the peddle to >>> the floor, it eventually catches for a bit and then back to >>> spitting etc. Plugs, air, fuel are perfect. A neighbor backyard >>> mech. suggested TPS? Throttle Positioning Sensor? Does this make >>> sense to the experienced owners? Any other areas to look into? >>> Thanks in advance. Bill McDonald >> >> Easiest thing first: has the fuel filter been replaced? After that >> the throttle position sensor seems like a good thing to check. >> Mine went wonky on my '91 and caused some drivability problems >> although they weren't as bad as what you describe. > > The OP should check the gas cap vent, if air can't enter the system > it'll start starving for fuel after a few miles.... > > Just take the cap off and drive, he'll get a check engine light but > ignore it. > > > > -- > XS11E, Killing all posts from Google Groups > The Usenet Improvement Project: > http://improve-usenet.org |
#5
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Help with accelleration
On Feb 24, 2:18 pm, williemcd > wrote:
> I'm a yutz when it comes to automotive repair so please bare with me. > 95 MX with 95K. It's had pretty good maint during it's life. Turns > over with less than one rev of the engine. However, after driving 4-5 > miles, it spits and sputters. Keeping the peddle to the floor, it > eventually catches for a bit and then back to spitting etc. Plugs, > air, fuel are perfect. A neighbor backyard mech. suggested TPS? > Throttle Positioning Sensor? Does this make sense to the experienced > owners? Any other areas to look into? > Thanks in advance. Bill McDonald All the above are good, but I'd had a similar issue and it turned out that the battery cable was frayed in the trunk. It actually wasn't frayed at the battery, it was frayed where the cable was bolted to the interior of the trunk, presumably to take off tension? Didn't work too well, but a new battery cable is no more expensive a repair than any of the above, and its really easy to tell. Give it a quick look- over. -r0ll |
#6
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Help with accelleration
On Feb 25, 8:48*am, r0lliSl1fe > wrote:
> On Feb 24, 2:18 pm, williemcd > wrote: > > > I'm a yutz when it comes to automotive repair so please bare with me. > > 95 MX with 95K. *It's had pretty good maint during it's life. *Turns > > over with less than one rev of the engine. *However, after driving 4-5 > > miles, it spits and sputters. *Keeping the peddle to the floor, it > > eventually catches for a bit and then back to spitting etc. *Plugs, > > air, fuel are perfect. *A neighbor backyard mech. suggested TPS? > > Throttle Positioning Sensor? *Does this make sense to the experienced > > owners? *Any other areas to look into? > > Thanks in advance. *Bill McDonald > > All the above are good, but I'd had a similar issue and it turned out > that the battery cable was frayed in the trunk. *It actually wasn't > frayed at the battery, it was frayed where the cable was bolted to the > interior of the trunk, presumably to take off tension? *Didn't work > too well, but a new battery cable is no more expensive a repair than > any of the above, and its really easy to tell. * Give it a quick look- > over. > > -r0ll Tks for the responses! 1st off I'll try the gas cap. It is stored outside and within a heavily wooded area. The wires were replaced about 35K ago. The battery cables check out looking good. Guess if none of the above fix,on to the TPS. Once again, tks for all of the suggestions. Bill in Va. |
#7
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Help with accelleration
no, the fuel filter was suggested next before the tps.
also, even oem or nkg wires are supposed to be replaced every 30k. let us know how it works out. good luck. "williemcd" > wrote in message ... On Feb 25, 8:48 am, r0lliSl1fe > wrote: > On Feb 24, 2:18 pm, williemcd > wrote: > > > I'm a yutz when it comes to automotive repair so please bare with me. > > 95 MX with 95K. It's had pretty good maint during it's life. Turns > > over with less than one rev of the engine. However, after driving 4-5 > > miles, it spits and sputters. Keeping the peddle to the floor, it > > eventually catches for a bit and then back to spitting etc. Plugs, > > air, fuel are perfect. A neighbor backyard mech. suggested TPS? > > Throttle Positioning Sensor? Does this make sense to the experienced > > owners? Any other areas to look into? > > Thanks in advance. Bill McDonald > > All the above are good, but I'd had a similar issue and it turned out > that the battery cable was frayed in the trunk. It actually wasn't > frayed at the battery, it was frayed where the cable was bolted to the > interior of the trunk, presumably to take off tension? Didn't work > too well, but a new battery cable is no more expensive a repair than > any of the above, and its really easy to tell. Give it a quick look- > over. > > -r0ll Tks for the responses! 1st off I'll try the gas cap. It is stored outside and within a heavily wooded area. The wires were replaced about 35K ago. The battery cables check out looking good. Guess if none of the above fix,on to the TPS. Once again, tks for all of the suggestions. Bill in Va. |
#8
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Help with accelleration
Well, the OP stated I was a yutz regarding automotive repair. Where
the heck is the fuel filter? Nothing under the hood looks like a suspect! Bill McDonald |
#9
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Help with accelleration
In article
>, williemcd > wrote: > Where > the heck is the fuel filter? http://www.miata.net/garage/FuelFilterChange/index.html -- Lanny Chambers St. Louis, MO '94C |
#10
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Help with accelleration
oem parts can be had for good prices from www.finishlineperformance.com.
the fuel filter is supposed to be replaced every 30k, but they typically last way longer. it is a large filter so it is more forgiving than many other cars. i did mine at 105k, shortly after i got the car and suspect it had never been done before. this filter is not particularly hard to reply but it is awkward and messy to do on your back. oem filters, including fuel, air, and oil, are much higher quality than the stuff sold at autozone and the like and the prices at finishline are actually cheaper than those inferior products. "Lanny Chambers" > wrote in message ... > In article > >, > williemcd > wrote: > >> Where >> the heck is the fuel filter? > > http://www.miata.net/garage/FuelFilterChange/index.html > > -- > Lanny Chambers > St. Louis, MO > '94C |
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