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#FORD ENGINE CODES 1991 FORD E 150 ARCHIVE#

The manifold absolute vacuum pressure sensor (MAP) might be bad.

The idle air control valve might be bad.)

Does it run better with an open throttle or with a disconnected vacuum line? (See what happens if you let air in without the computer detecting an open throttle position.

Is the timing gear on the right tooth? (Pull the cylinder 1 spark plug and stick a coat hanger down the hole, and use the crankshaft pulley mark to confirm 0 degrees at TDC, and ensure that the distributor is pointing at the right spark plug wire.).

Don’t be me and jump back into the ditch in shock, spurring your girlfriend to call 911, unless you want her to give you mouth to mouth.) TIP: Don’t be me and lean against the fender and hold a firing spark plug at the same time.

Are all the spark plugs fouling? Are all the spark plugs firing? (Pull the fuel pump fuse, crank the engine, and pull and visually inspect each spark plug held up against ground.

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Did you adjust and check the timing? (Pull the SPOUT connector and do the timing light thing.) FORD is not the seller of the parts offered for sale on this website.

Did you remember to put the valve stem seals on? (See if they’re still in the box, lol.).

#FORD ENGINE CODES 1991 FORD E 150 ARCHIVE#

Cool! A rebuilt 302! I just finished rebuilding my EFI 300 4.9L from that vintage.Īn excellent resource for 90s Ford EFI technology is an archive of Ĭode 33 indicates the EGR valve not opening.