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Topic: Car won't start after MAF conversion.. (Read 2277 times) previous topic - next topic

Car won't start after MAF conversion..

I have triple checked to make sure every pin is in the right number.  Would the fuel pump relay or VSS keep the car from actually starting?

We are beginning to believe we may have gotten a bad computer.  Any ideas guys?  Thanks
'88 Thunderbird LX
[SIGPIC][/SIGPIC]
Engine:  FR B303 cam, GT40P heads w/ Trickflow valve springs, Explorer upper/lower intake, SR cold air intake w/ MAF
Exhaust:  shorty headers, BBK O-R X-pipe, glasspacks w/ turn downs
Misc:  8.8 rear, Saleen SC replicas 17x8/17x10, Mach 1 front springs/SN95 rear springs
&
'74 F100 Custom 351W

Car won't start after MAF conversion..

Reply #1
is fuel pump coming on with key cycle?
[SIGPIC][/SIGPIC]:ford:87 Turbo Coupe through the floor sub frame connectors, 5.8 swap Ford racing heads Harland sharp 1.6 rockers BBK shorty swap headers 2 1/2 BBk X pipe magnaflow ler's. Megasquirt 2 with 36lbs injectors on hurricane intake with 4150 throttle body.Tremec TKO 600 Quicktime blowsheild spec stage 3 clutch. 3.73 gears and still not done

Car won't start after MAF conversion..

Reply #2
Yeah, I hear it when I turn the key.
Quote from: thewestie;451765
is fuel pump coming on with key cycle?
'88 Thunderbird LX
[SIGPIC][/SIGPIC]
Engine:  FR B303 cam, GT40P heads w/ Trickflow valve springs, Explorer upper/lower intake, SR cold air intake w/ MAF
Exhaust:  shorty headers, BBK O-R X-pipe, glasspacks w/ turn downs
Misc:  8.8 rear, Saleen SC replicas 17x8/17x10, Mach 1 front springs/SN95 rear springs
&
'74 F100 Custom 351W

Car won't start after MAF conversion..

Reply #3
A few weeks ago my bird wouldn't start. Had spark, fuel, etc... Turned out to be a bad ground from the computer. Good luck with it. Electrical Gremlins can sometimes be nerve racking
87 Tbird LX w/Factory floor shifter:D   3G upgrade. Tinted Windows...85 Mustang GT steering wheel(non-cruise) 17'' Saleen SC style wheels,Front/Rear TC sway bars/poly bushings & Mustang GT steering rack...'05 Mustang V6 springs...93 Cobra MC & booster, MM adjustable C/C plates,  Work  In  Progress.......  ( On The Shelf---HO computer, 19lb injectors, HO cam, BBK headers, Explorer Intake, Cold Air Intake ,Phantom Gauges, Stinger stainless exhaust pipes )
 S O L D

Car won't start after MAF conversion..

Reply #4
Quote from: GDawg148;451764
I have triple checked to make sure every pin is in the right number.  Would the fuel pump relay or VSS keep the car from actually starting?

We are beginning to believe we may have gotten a bad computer.  Any ideas guys?  Thanks


VSS nor fuel pump monitor circuit will cause a no start, neither will TAB/TAD solenoids as the Ford Racing conversions didn't address their wiring... If fuel pump is priming it's either a injector drive issue(computer), or there is no ign pulse to ECM tell it when to fire injectors...

Stick the orig computer back in it to see if it starts(be sure to reconnect vac to MAP)...

Car won't start after MAF conversion..

Reply #5
So.........any updates? I hate a story without an ending.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

 

Car won't start after MAF conversion..

Reply #6
:popcorn:    Im curious too  :popcorn:
87 Tbird LX w/Factory floor shifter:D   3G upgrade. Tinted Windows...85 Mustang GT steering wheel(non-cruise) 17'' Saleen SC style wheels,Front/Rear TC sway bars/poly bushings & Mustang GT steering rack...'05 Mustang V6 springs...93 Cobra MC & booster, MM adjustable C/C plates,  Work  In  Progress.......  ( On The Shelf---HO computer, 19lb injectors, HO cam, BBK headers, Explorer Intake, Cold Air Intake ,Phantom Gauges, Stinger stainless exhaust pipes )
 S O L D