Hello everyone! needs some help with my 99 elantra 2.0. It has 196,000 on it, w/ 5 speed. It loses power past 40 mph for a short time, but never gives a code. It idles fine. I have replaced the fuel pump relay, filter, fuel pump, TPS, crankshaft sensor, pvc, checked plugs, wires, and replaced the fuel pressure regulator. After chasing my tail I toke it in to the dealer with no luck. It first started on the highway going 70mph and just loses power and then gains it back. The exhaust doesn't smell and have taken it to a muffler shop, thinking convertor. I've read through the internet with nothing else to do. Please help!

Reading, What are they telling me?
Abslt TPS% 37.2 17.2 17.6 10.5 16.8 20.7 20.7 12.9 19.2 16 11.7 18.4 16.8 15.2 15.2
Eng. Speed rpm 1960 2000 1880 2080 2080 2040 2080 2120 2120 2200 2240 2280 2280 2160 2320
Calc load % 25.8 9 9.8 4.7 606 15.6 13.7 6.6 12.9 7.8 4.7 11.7 7.8 6.6 7.8
MAF flow gr/c 28.87 10.64 11.37 5.86 8.96 18.41 13.61 7.84 14.63 9.31 6.19 14.91 9.38 8.75 9.17
collant iat F 188 188 188 188 188 188 188 188 188 188 188 188 188 188 188
IAT f 96 98 98 98 96 96 96 96 96 96 98 96 96 96 96
Ign. Advance 10.5 33.5 8.8 37.5 36.5 23 32 37.5 33 38 38 32 38 38 39
Short Term Fuel Trim bank 1 -2.2 0.7 2.3 -6.3 3.1 2.3 -1 -0.46 3.1 -2.2 3.1 2.3 1.5 -2.2 1.5
Long Term ftrm1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1 3.1
Veh speed mph 124 98 91 96 98 66 87 91 77 75 68 70 62 75 62
fuel sys 1 clsd clsd
fuel sys 2 n/a
O2s11 0.25 0.735 0.805 0.74 0.56 0.13 0.1 0.095 0.76 0.47 0.135 0.74 0.205 0.11 0.13
st ftrm11 -1 2.3 0.8 0.7 0.7 0.8 0.7 0.8 -3.4 -8 8.5 1.5 1.5 3.1 3.1
o2s12 0.64 0.69 0.69 0.375 0.63 0.64 0.75 0.59 0.75 0.775 0.205 0.745 0.66 0.63 0.605
obd2 ca


This post has been edited by thelinks: Oct 30 2009, 10:02 AM