# MAF SR Problem **URL:** \ **Category:** SON240sx Automotive\ **Created:** [August 4, 2004, 3:02pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386 "2004-08-04T15:02:54Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [August 4, 2004, 3:02pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/1 "2004-08-04T15:02:54Z")
Thanks to sashas jdm magic my SR finally runs, and well. but theres a problem, At first the car wouldnt rev past 2500 and it idled at 1700 rpm. We checked the wiring, and it was fine so we assumed it was a broken maf or plug, That night i went and picked up another maf, and im sure this one is a good maf. Wired it up with the new plug, checked wiring, started it up same problem, hits 2500 and wont go further, i checked all the wiring extensions to the maf, there all right. So, now im confused we think i should try running the car n/a to see if its a turbulance in the intake issue. Any suggestions. ---
**Author:** ![iQuAGoD](https://avatars.discourse-cdn.com/v4/letter/i/f05b48/32.png) [@iQuAGoD](https://forums.speedlife.net/u/iQuAGoD)\ **Post date:** [August 4, 2004, 4:36pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/2 "2004-08-04T16:36:08Z")
ECU is limiting your revs, therefore there is a problem. Most likley electrical, do as Ed said and check codes… Just cause you got a new MAFS doesn’t mean the connections are good. ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [August 4, 2004, 7:56pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/3 "2004-08-04T19:56:04Z")
ECU flashed 14 (Mass Air Flow Sensor) so yes its in safe mode because of the MAFS but WHY THE FUCK ISN"T IT TAKING THE NEW MAFS? i checked all thel wiring right up to the plug, the ground has 0 resistance to the head (so im assuming the ECU as well - i could check that) the black/white has 12v coming in, and the white signal has 0 resistance from the pin on the ecu to the pin on the mafs plug (i.e. the wire is fine) At first i thought the hotwire in the mafs was no good, but after trying a new mafs and plug it should be fine. Since the MAFS code can come up due to turbulence or “unreasonable mafs readings” i thought maybe there is some sort of vortex created by scotts ghetto intake piping, so try it N/A or whereever else you can plug it into… very strange issue. Also hes tried this ECU on another car however only started it did not rev it - possibly the pins on the ecu and plug aren’t making a connection and just didnt notice this when testing it on another car this post is for scott and anyone else tryign to help us out 😛 ---
**Author:** ![Sasha\_SG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sasha_sg/32/5477_2.png) [@Sasha\_SG](https://forums.speedlife.net/u/Sasha_SG)\ **Post date:** [August 4, 2004, 10:20pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/4 "2004-08-04T22:20:01Z")
the ground goes the the ECU, but the ECU grounds to the chassis, which is also grounded to the engine. It goes like this \> Maf ground wire \> ECU main ground \> on one wend othe ECU main ground is hte ECU, the other end is a chassis ground on the engine. ---
**Author:** ![Born2drift](https://avatars.discourse-cdn.com/v4/letter/b/35a633/32.png) [@Born2drift](https://forums.speedlife.net/u/Born2drift)\ **Post date:** [August 8, 2004, 5:02pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/5 "2004-08-08T17:02:05Z")
hey i had the same problem the computer went into limp mode we dicked around for hours thinking it was the wireing but it ended up we forgot u need a Mafs from a sohc KA we were using the dohc that could be ur problem also check up and down ur shilded section running to ur mafs there could be a section thats picking up intereferince hope i could help Cheers Chris ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [August 8, 2004, 6:26pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/6 "2004-08-08T18:26:10Z")
PROBLEM SOLVED ECU BLUE PLUG HAD NO METAL PIN FOR ECU IMPUT, SORRY FOR CAPS IM AT A DATA ENTRY PLACE LOL. ---
**Author:** ![DTS](https://avatars.discourse-cdn.com/v4/letter/d/8491ac/32.png) [@DTS](https://forums.speedlife.net/u/DTS)\ **Post date:** [August 8, 2004, 10:47pm UTC](https://forums.speedlife.net/t/maf-sr-problem/81386/7 "2004-08-08T22:47:06Z")
Ya sasha got my car to run by fixing my wiring problem to start with, he is pimp at wiring.