Check engine light flickers
I just got a really good deal on an 88 F-150 4x4 ext cab with a 5.0L 5spd that the clutch fan had come apart on and took out the water pump bearing and rad. I have fixed all that but when i drive it the check engine light flickers quite often, it seems to be running good but im just wondering why it would flicker and not just come on and stay on for awhile?
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RE: Check engine light flickers
With my experience on flickering light, I would have to call Ford up with that one..Good Luck!
:eek:MarauderS |
RE: Check engine light flickers
Have someone read the cades for you. It can be done for free at most chain auto parts stores.
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RE: Check engine light flickers
A bit of an update..................
I drove it all day today and it looks like its flashing codes while its being driven. But if it is its almost every code possible. The truck runs awesome so i dont get it. |
RE: Check engine light flickers
Did you get the codes Checked?
You should have an ODB I so you could pick up a reader which is relatively cheap (around $40 or so) at most auto parts stores or just use a paper clip to jump the contector just inside the hood. If you want I'll get you all the proper info on doing this. once the connector is jumped its as easy as watching the check engin light flash,recording the number of flashes and then matching up the number of flashes and sequence to the codes. I am sure when I did this the code list was on this forum. If not a quick search in google should do it. If you have trouble getting the codes let me know and I can find what I used. Having said all that when my check engin light was flashing it kept showing up as a EGR valve problem. Which in actual fact ended up being a vaccum leak. On of the hoses was broken, fixed that and the light went out. So one place to start might be to check your vaccum lines, that is other than getting the codes read. Hope this help a little. Andy - GWN 89 Ford F150 5.0L EFI |
RE: Check engine light flickers
Try disconnecting the battery for a while to see if the computer "resets" and see if it does this again.
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RE: Check engine light flickers
You can use an analog volt meter to pull the codes. Just count the sweeps to get the code numbers. All OBD I codes are 2 digits.
Example: sweep, sweep, sweep, sweep (pause) sweep, sweep, sweep, sweep, sweep, sweep, sweep, sweep = 48 A 48 would be the fault code for "Injectors unbalanced " Diagnostic Trouble Codes - 1988 Ford 11 System "pass" 12 RPM out of spec (extended idle) 13 RPM out of spec (normal idle) 14 PIP was erratic (continuous test) 15 ROM test failed 16 RPM too low (fuel lean test) ** 17 RPM too low (upstream/lean test) ** 18 No tach 19 No power to processor or idle speed incorrect 21 ECT out of range 22 MAP out of range 23 TPS out of range 24 ACT out of range 25 Knock not sensed in test 26 MAF (VAF) out of range 28 Ambient temp. below 50° F (1.9L EFI & 2.3L Turbo only) 31 EVP out of limits 32 EGR not controlling 33 EVP not closing properly 34 No EGR flow 35 RPM too low (EGR test) 36 Fuel always lean (at idle) 37 Fuel always rich (at idle) 41 System always lean 42 System always rich 43 EGO cool down occurred 44 Air management system inoperative 45 Air always upstream 46 Air not always bypassed 47 Up air/lean test always rich*** 48 Injectors unbalanced 51 ECT input too high 52 Power steering pressure switch is open or steering wheel not turned during KOER self-test 53 TPS input too high 54 ACT (VAT) input too high 55 Electrical charging under voltage 56 MAF (VAF) input too high 58 Idle tracking switch input too high (engine running test) 59 Trans. hydraulic switch (THS 3/4) failed in open position (3.0L & 3.8L A/T only 61 ECT input too low 62 Trans. hydraulic switch (THS 3/4) failed 63 TPS input too low 64 ACT (VAT) input too low 65 Electrical charging over voltage 66 MAF (VAF) input too low 67 Neutral drive switch drive or accelerator on (engine off) 68 ITS open or AC on (engine-off test) 69 Trans. hydraulic switch (THS 3/2) failed 72 No MAP change in "goose test" 73 No TPS change in "goose test" 74 Brake on/off switch always open or not activated during test 75 Brake on/off switch always closed or circuit shorted 76 No MAF (VAF) change in "goose test" 77 Operator did not do "goose test" 79 Neutral drive switch (NDS) or A/C input signal interrupted 81 Thermactor air bypass (TAB) circuit fault 82 Thermactor air diverter (TAD) circuit fault 83 EGR control (EGRC) circuit fault 84 EGR vent (EGRV) circuit fault 85 Canister purge (CANP) circuit fault 86 WOT A/C cut-off circuit fault (all 3.8L and 5.0L Continental) 87 Fuel pump circuit fault 88 Throttle kicker circuit fault (5.0L) 89 Check Continuity Of VPWR Circuit 91 Right EGO always lean 92 Right EGO always rich 93 Right EGO cool down occurred 94 Right secondary air inoperative 95 Right air always upstream 96 Right air always not bypassed 97 RPM drop (with fuel lean) but right EGO rich 98 RPM drop (with fuel rich) but right EGO lean 99 ECA has not stored enough information to control idle speed (CFI engines only ** On 1986 and later vehicles, this represents RPM too high/low or throttle pedal was depressed during KOER Self-Test *** Low flow of unmetered air on 1987-88 1.9L EFI engine [IMG]local://upfiles/9061/BD962512875247D49BBBF9E42922813C.gif[/IMG] |
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