Car Won't Start w/o Gas Pedal?
09-05-2009, 08:16 AM
#1
Senior Member
Thread Starter
Join Date: Sep 2009
Location: Marlton, NJ
Posts: 123
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: 2002 Hyundai Sonata LX
Car Won't Start w/o Gas Pedal?
I'm a newb to the forum, so maybe this is in the wrong section, but I figured up Sonata owners could band together and maybe help me out..
Recently, my car wouldn't start, just crank. Crank crank crank, no fire. They replaced the crank sensor, and it ran fine. Within three days, it did it again. I had it towed, and when it reached the shop, it would fire right up. This happened three more times, and AAA loved me. smile.gif I even left it at the shop for 3 weeks, trying to figure it out.
Recently, I figured out that if (cold start or hot) I hold the gas pedal down an inch or so when I turn the key, it tries to stumble out (like always) but will "catch" and fire right up. If i don't press the gas pedal down, it'll start, reach 300-400 rpm, and choke itself out. It runs fine, no change in mpg, power, etc. I'm thinking either a dirty TPS sensor or IACV? I also think I should clean the MAF and IAC. It seems everytime I try to do something simple though, things break and go very wrong. (i.e - unscrewed the PCV valve and it snapped right off, so I had to replace the entire valve cover..). Anybody run into this starting issue??
I will add that every so often, at idle, the tach needle will flutter between 500-900 rpm, and it even once raced up and down between 3,000 rpm and 1,500 before calming down and a smooth ride home.
Grr..
- Goldie97
Recently, my car wouldn't start, just crank. Crank crank crank, no fire. They replaced the crank sensor, and it ran fine. Within three days, it did it again. I had it towed, and when it reached the shop, it would fire right up. This happened three more times, and AAA loved me. smile.gif I even left it at the shop for 3 weeks, trying to figure it out.
Recently, I figured out that if (cold start or hot) I hold the gas pedal down an inch or so when I turn the key, it tries to stumble out (like always) but will "catch" and fire right up. If i don't press the gas pedal down, it'll start, reach 300-400 rpm, and choke itself out. It runs fine, no change in mpg, power, etc. I'm thinking either a dirty TPS sensor or IACV? I also think I should clean the MAF and IAC. It seems everytime I try to do something simple though, things break and go very wrong. (i.e - unscrewed the PCV valve and it snapped right off, so I had to replace the entire valve cover..). Anybody run into this starting issue??
I will add that every so often, at idle, the tach needle will flutter between 500-900 rpm, and it even once raced up and down between 3,000 rpm and 1,500 before calming down and a smooth ride home.
Grr..
- Goldie97
09-05-2009, 11:35 AM
#2
Senior Member
Join Date: Mar 2006
Location: tacos
Posts: 9,533
Likes: 0
Received 0 Likes
on
0 Posts
Vehicle: 2000 Elantra
dammit pressed thanks isntead of reply lol
anyways i would check out the TPS sensor first on the betas they had a problem with the dae sung tps doing the exact same thing you just posted
which reminds me i gotta swap out the one on my wagon lol
anyways i would check out the TPS sensor first on the betas they had a problem with the dae sung tps doing the exact same thing you just posted
which reminds me i gotta swap out the one on my wagon lol
09-05-2009, 04:05 PM
#3
Administrator
Join Date: Mar 2006
Location: Lacey, WA
Posts: 12,515
Likes: 0
Received 2 Likes
on
2 Posts
Vehicle: Two Accents, Mini, Miata, Van, Outback, and a ZX-6
I would pick up an inexpensive OBDII code reader that gives realtime sensor data so that you can see how the TPS is behaving. I got mine for $90, best tool I've ever bought.